Front windshield cross member assembly and vehicle

Abstract

The present invention discloses a front windshield crossbeam assembly and a vehicle, wherein the front windshield crossbeam assembly comprises: a front windshield lower crossbeam and a front windshield reinforcement beam, wherein the front windshield lower crossbeam is arranged above the front windshield reinforcement beam, and the front windshield lower crossbeam is provided with a plurality of step portions, wherein the plurality of step portions are arranged in the length direction and / or width direction of the front windshield lower crossbeam, and each of the step portions has a different thickness and / or a different size in the length direction of the front windshield lower crossbeam. By providing a plurality of step portions in the length direction and width direction of the front windshield lower crossbeam, and the widths or thicknesses of the plurality of step portions are different, not only can the overall structural strength of the front windshield crossbeam assembly be improved, but also the local modes of the plurality of step portions can be used as vibration absorbers to absorb vibration, effectively attenuating the energy transmitted by the engine-excited vibration, thereby achieving the purpose of reducing the vibration noise in the vehicle and improving the riding comfort of the passengers in the vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, and in particular to a front windshield crossbeam assembly and a vehicle. Background Art

[0002] Automobiles tend to be lightweight and low-cost in design, and the weight of vehicles needs to be reduced. However, users' demand for vehicle comfort is constantly increasing, and NVH performance cannot be reduced at the same time. Among them, the sheet metal of automobile bodies tends to be lightweight in design, and the lower crossbeam of the front windshield is close to the engine and shock absorber installation points. During the driving of the vehicle, the vibration of the engine and the road surface is easily transmitted to the lower crossbeam, and the vibration is amplified at the modal frequency to cause noise inside the car. In particular, during acceleration, the engine excitation is transmitted to the lower crossbeam of the front windshield through the body frame, which is easy to cause roaring problems in the car at the speed range corresponding to the modal frequency of the lower crossbeam.

[0003] In the related art, the structural strength is improved by increasing the thickness of the cross beam under the front windshield or adopting a double-layer plate structure. However, the change in the thickness of the cross beam requires corresponding design changes to the main body and peripheral parts molds, which is costly and has a long cycle. There are also methods of adding sheet metal bracket supports, but adding brackets requires space and support points. Sometimes, in order to find suitable support points, the bracket design is larger, which increases the cost and weight a lot and is inconsistent with the safety performance and pedestrian protection. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a front windshield cross beam assembly, wherein a plurality of step portions are provided in the length direction of the front windshield cross beam assembly, each step portion has a different size or thickness in the length direction, and the local mode of each step portion can be used as a vibration absorber to absorb vibration.

[0005] The present invention also provides a vehicle.

[0006] According to the front windshield cross beam assembly of the first aspect of the present invention, the front windshield cross beam assembly includes: a front windshield lower cross beam and a front windshield reinforcement beam, the front windshield lower cross beam is arranged above the front windshield reinforcement beam, and a plurality of step portions are arranged on the front windshield lower cross beam, and the plurality of step portions are arranged in the length direction and / or width direction of the front windshield lower cross beam, and each of the step portions has a different thickness and / or a different size in the length direction of the front windshield lower cross beam.

[0007] According to the front windshield cross beam assembly of an embodiment of the present invention, a plurality of step portions are arranged in the length direction and width direction of the front windshield lower cross beam, and the thickness of the plurality of step portions or the dimensions in the length direction of the front windshield lower cross beam are different, so that the front windshield lower cross beam is divided from a whole piece of sheet metal into a plurality of different step portions. This not only improves the structural strength of the front windshield cross beam assembly, but also utilizes the local mode of each step portion as a vibration absorber to absorb vibration, effectively attenuates the energy transferred by the engine-excited vibration, thereby achieving the purpose of reducing the vibration noise in the vehicle, improving the riding comfort of the passengers in the vehicle, and meeting the design requirements of lightweight vehicle.

[0008] According to some embodiments of the present invention, a projection shape of the front windshield lower cross beam on the lower surface is an inverted arch shape, and a middle portion of the inverted arch shape bulges rearward.

[0009] According to some embodiments of the present invention, the dimensions of two adjacent step portions in the length direction of the lower cross beam of the front windshield are respectively d 大 and d 小 , d 大 and d 小 Satisfy the relationship: d 大 -d 小 ≥0.2d 小 .

[0010] According to some embodiments of the present invention, a dimension of each step portion in the length direction of the lower cross beam of the front windshield is D1, and D1 satisfies the relationship: 20mm≤D1≤300mm; and / or a thickness of each step portion is B1, and B1 satisfies the relationship: 0.5mm≤B1≤0.8mm.

[0011] According to some embodiments of the present invention, the front windshield lower cross beam includes: an upper plate portion, a front plate portion and a connecting plate portion, the connecting plate portion is connected between the upper plate portion and the front plate portion, and a plurality of the step portions are provided on the front plate portion.

[0012] According to some embodiments of the present invention, the projection shape of the front windshield reinforcement beam on the lower surface is an inverted arch and the middle part of the inverted arch bulges rearward, and the front windshield reinforcement beam is provided with a plurality of protrusions, which are spaced apart in the length direction of the front windshield reinforcement beam and extend in the width direction.

[0013] According to some embodiments of the present invention, a connecting portion is formed between two of the protrusions, and the dimensions of two adjacent connecting portions in the length direction of the front windshield reinforcement beam are different, and the dimension of the connecting portion in the length direction of the front windshield reinforcement beam is different from the dimension of the step portion in the length direction of the front windshield lower cross beam; and / or the thicknesses of two adjacent connecting portions are different, and the thickness of the connecting portion is different from the thickness of the step portion.

[0014] According to some embodiments of the present invention, the dimensions of two adjacent connecting portions in the length direction of the front windshield reinforcement beam are respectively 大 and b 小 , b 大 and b 小 Satisfy the relationship: b 大 -b 小 ≥0.2b 小 .

[0015] According to some embodiments of the present invention, the dimension of each of the connecting portions in the length direction of the front windshield reinforcement beam is D2, and D2 satisfies the relationship: 90mm≤D2≤240mm; and / or, the thickness of each of the connecting portions is B2, and B2 satisfies the relationship: 0.5mm≤B2≤0.8mm.

[0016] According to some embodiments of the present invention, the thickness of the protrusion is H, and H satisfies the relationship: 1mm≤H≤5mm; and / or, the dimension of the protrusion in the length direction of the front windshield reinforcement beam is F, and F satisfies the relationship: 5mm≤F≤15mm.

[0017] According to some embodiments of the present invention, a plurality of weight-reducing holes are provided on the front windshield reinforcement beam, and shock-absorbing buffers are provided in the weight-reducing holes.

[0018] A vehicle according to an embodiment of the second aspect of the present invention includes: the front windshield cross beam assembly described above.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a perspective view of a front windshield cross beam assembly according to an embodiment of the present invention;

[0022] Figure 2 is a top view of a front windshield cross beam assembly according to an embodiment of the present invention;

[0023] Figure 3 is a side view of a front windshield cross beam assembly according to an embodiment of the present invention;

[0024] Figure 4 is a bottom view of a front windshield cross beam assembly according to an embodiment of the present invention;

[0025] Figure 5 is a perspective view of a front windshield lower cross beam according to an embodiment of the present invention;

[0026] Figure 6 is a front view of a lower cross beam of a front windshield according to an embodiment of the present invention;

[0027] Figure 7 is a schematic structural diagram of a front windshield reinforcement beam according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 100. Front windshield crossbeam assembly;

[0030] 10. front windshield lower cross beam; 11. step portion; 12. upper plate portion; 13. front plate portion; 14. connecting plate portion;

[0031] 20. Front windshield reinforcement beam; 21. Protrusion; 22. Weight reduction hole; 23. Connection part;

[0032] 30. Bracket. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0034] Reference below Figure 1-Figure 7 A front windshield cross member assembly 100 according to an embodiment of the present invention is described.

[0035] like Figure 1-Figure 6 As shown, the front windshield cross beam assembly 100 includes: a front windshield lower cross beam 10 and a front windshield reinforcement beam 20, and the front windshield lower cross beam 10 is arranged above the front windshield reinforcement beam 20. In this way, by arranging the front windshield lower cross beam 10 above the front windshield reinforcement beam 20, the structural strength of the front windshield cross beam assembly 100 can be effectively improved, so that the vehicle vibration and external force impact energy can be effectively absorbed to ensure the vehicle running smoothly and reduce the noise inside the vehicle. Among them, since the sheet metal beam has the characteristics of light weight and high strength, the front windshield cross beam assembly 100 can meet the lightweight requirements.

[0036] Among them, a plurality of step portions 11 are arranged on the front windshield lower cross beam 10, and the plurality of step portions 11 are arranged in the length direction and / or width direction of the front windshield lower cross beam 10, and each step portion 11 has a different thickness and / or a different size in the length direction of the front windshield lower cross beam 10. In this way, the thickness of each step portion 11 is different from each other, or the size of each step portion 11 in the length direction of the front windshield lower cross beam 10 is different from each other, or the thickness of each step portion 11 is different from each other, and the size of each step portion 11 in the length direction of the front windshield lower cross beam 10 is also different from each other, so that the modal frequency of each step portion 11 can be different from each other, and the close-frequency design is realized, which effectively reduces the resonance of the vehicle body, thereby reducing the vibration noise energy in the vehicle, and at the same time, the structural strength of the front windshield cross beam assembly 100 can be effectively enhanced.

[0037] In addition, multiple step portions 11 can be distributed along the length direction and width direction of the front windshield lower cross beam 10. Such a configuration effectively expands the distribution range of the multiple step portions 11, and can attenuate the vibration energy from different directions of the vehicle body. In addition, combined with the different sizes and thicknesses of the multiple step portions 11 in the length direction of the front windshield lower cross beam 10, the vibration frequency range of the multiple step portions 11 can be effectively expanded, so that each step portion 11 has a different modal frequency, which can well absorb the vibration of the vehicle body and improve the vibration attenuation ability of the front windshield lower cross beam 100. Among them, the size of the step portion 11 in the length direction of the front windshield lower cross beam 10 is the length of the step portion 11, and the size of the step portion 11 in the width direction of the front windshield lower cross beam 10 is the width of the step portion 11.

[0038] Therefore, by arranging a plurality of step portions 11 in the length direction and the width direction of the front windshield lower cross beam 10, and the plurality of step portions 11 have different sizes or thicknesses in the length direction of the front windshield lower cross beam 10, the front windshield lower cross beam 10 is divided into a plurality of different step portions 11 from a whole piece of sheet metal. This not only improves the structural strength of the front windshield cross beam assembly 100, but also utilizes the local mode of each step portion 11 as a vibration absorber to absorb vibration, effectively attenuating the energy transferred by the engine-excited vibration, thereby achieving the purpose of reducing the vibration noise in the vehicle, improving the riding comfort of the passengers in the vehicle, and meeting the requirements of lightweight design of the vehicle.

[0039] like Figure 5 and Figure 6 As shown, the projection shape of the front windshield lower cross beam 10 on the lower surface is an inverted arch shape, and the middle part of the inverted arch bulges backward. In this way, from the perspective of the lower surface projection of the front windshield lower cross beam 10, the front windshield lower cross beam 10 forms an inverted arch structure with a low middle and high ends, further enhancing the structural strength, thereby improving the driving safety of the vehicle. In addition, the thickness of the inverted arch structure projected on the lower surface is uniform, so that the overall thickness of the front windshield cross beam assembly 100 can be well ensured to be relatively uniform.

[0040] Combination Figure 2 As shown, the dimensions of the two adjacent step portions 11 in the length direction of the front windshield lower cross beam 10 are d 大 and d 小 , d 大 and d 小 Satisfy the relationship: d 大 -d 小 ≥0.2d 小 That is to say, along the length direction of the front windshield lower cross beam 10, the length difference between two adjacent step portions 11 is controlled to be more than one-fifth of the length of the two step portions 11. In this way, the lengths of the multiple step portions 11 can be different from each other, that is, the dimensions of the multiple step portions 11 in the length direction of the front windshield lower cross beam 10 can be different from each other, thereby making the modal frequencies of the multiple step portions 11 different from each other, realizing the frequency-approaching design, effectively reducing the resonance of the vehicle body, and thus reducing the vibration and noise energy inside the vehicle.

[0041] Specifically, the lengths of the multiple steps 11 may be gradually increasing or decreasing from the middle of the front windshield lower cross beam 10 in the length direction to both ends, or the lengths of the multiple steps 11 may be gradually increasing from one end to the other end in the length direction of the front windshield lower cross beam 10. Of course, this is not limited to the above description, and reference Figure 2 As shown, the front windshield cross beam assembly 100 can also be matched with the layout requirements of the vehicle body instrument panel. Therefore, it is sufficient to control the length difference of two adjacent step portions 11 to be more than one-fifth of the length difference between the two step portions 11, so that the local mode of each step portion 11 can be used as a vibration absorber to absorb vibration energy.

[0042] Furthermore, the dimension of each step portion 11 in the length direction of the front windshield lower cross beam 10 is D1, and D1 satisfies the relationship: 20mm≤D1≤300mm. In this way, according to the width range of the vehicle and the gap requirements between two adjacent step portions 11, the length of each step portion 11 is set to 20mm~300mm, which can well ensure that the lengths of multiple step portions 11 are different from each other, and different numbers of step portions 11 can be set according to different vehicle widths. Specifically, refer to Figure 2 As shown, 17 steps 11 of different lengths can be provided on the front windshield lower cross beam 10, which can effectively enhance the structural strength and can also be used as a vibration absorber to attenuate vibration excitation. Of course, the front windshield lower cross beam 10 can also be divided into other different numbers of steps 11.

[0043] In addition, the thickness of each step portion 11 is B1, and B1 satisfies the relationship: 0.5mm≤B1≤0.8mm. In this way, the thickness of each step portion 11 is set to 0.5mm~0.8mm. On the one hand, the structural strength of the front windshield beam assembly 100 can be well guaranteed without increasing the weight. On the other hand, the thickness of multiple step portions 11 can be well guaranteed. In combination with the different lengths of multiple step portions 11, each step portion 11 can have a different modal frequency. When the engine vibration excitation and road vibration are transmitted to the front windshield beam assembly 100 through the body frame during vehicle driving, multiple step portions 11 can be used to absorb vibration and effectively attenuate vibration energy, thereby reducing noise vibration in the vehicle and improving the comfort experience of passengers.

[0044] Furthermore, the front windshield lower cross beam 10 includes: an upper plate portion 12, a front plate portion 13 and a connecting plate portion 14, wherein the connecting plate portion 14 is connected between the upper plate portion 12 and the front plate portion 13, and a plurality of step portions 11 are arranged on the front plate portion 13. Figure 2 As shown, the front plate portion 13 is located on the side of the front windshield lower cross beam 10 close to the vehicle cab, the upper plate portion 12 is located on the side of the front windshield lower cross beam 10 close to the vehicle engine compartment, and the connecting plate portion 14 is connected between the upper plate portion 12 and the front plate portion 13, so that the fixed connection between the front windshield lower cross beam 10 and the vehicle body frame can be well ensured, and a plurality of step portions 11 are provided on the front plate portion 13. During vehicle acceleration, the engine excitation is transmitted to the front windshield lower cross beam 10 through the vehicle body frame, and the different modal frequencies of the front plate portion 13 can effectively attenuate the vibration noise transmitted to the vehicle, avoid abnormal noise in the cab instrument, and thus effectively improve the vehicle quality.

[0045] In addition, multiple steps 11 may be provided on the upper plate portion 12 and the connecting plate portion 14, so that the lower cross beam 10 of the front windshield forms a vibration absorber with a wide range of modal frequencies, so as to effectively attenuate the vibration frequencies of different acceleration sections of the vehicle, and further effectively reduce the vibration noise inside the vehicle. In addition, multiple openings may be provided on the upper plate portion 12 and the connecting plate portion 14, so as to effectively reduce the weight of the lower cross beam 10 of the front windshield while ensuring the structural strength.

[0046] Furthermore, the projection shape of the front windshield reinforcement beam 20 on the lower surface is an inverted arch shape, and the middle part of the inverted arch shape bulges backwards. The front windshield reinforcement beam 20 is provided with a plurality of protrusions 21, and the plurality of protrusions 21 are arranged at intervals in the length direction of the front windshield reinforcement beam 20 and are extended in the width direction. In this way, from the projection on the lower surface of the front windshield reinforcement beam 20, the front windshield reinforcement beam 20 also forms an inverted arch structure with a low middle part and high ends, and the front windshield reinforcement beam 20 and the front windshield lower cross beam 10 form a closed double arch structure. Figure 3As shown, by utilizing the characteristics of high closed structure strength and high double arch structure strength, the overall structural strength of the front windshield beam assembly 100 can be improved and the vibration sensitivity of the vehicle can be effectively reduced.

[0047] In addition, a plurality of protrusions 21 are provided in the length direction of the front windshield reinforcement beam 20, so that the front windshield reinforcement beam 20 is divided into multiple "bamboo joint" structures, and combined with its inverted arch structure, the structural strength of the front windshield reinforcement beam 20 can be effectively improved. Among them, the protrusion 21 structure of the front windshield reinforcement beam 20 cooperates with the inverted arch structure, which ensures that the front windshield reinforcement beam 20 has a strong structural strength while also having a certain rigidity, which can effectively buffer the impact deformation of external forces, and the connection angle between the "bamboo joint" structures makes the force of the front windshield reinforcement beam 20 more uniform, thereby effectively improving the comfort of the vehicle.

[0048] Among them, a connection portion 23 is formed between the two protrusions 21, and the sizes of the two adjacent connection portions 23 in the length direction of the front windshield reinforcement beam 20 are different, and the size of the connection portion 23 in the length direction of the front windshield reinforcement beam 20 is different from the size of the step portion 11 in the length direction of the front windshield lower cross beam 10. In other words, the lengths of the multiple connection portions 23 are different from each other, and the lengths of the multiple connection portions 23 and the multiple step portions 11 are also different. In this way, the connection portion 23 and the step portion 11 have different modal frequencies, so that the front windshield reinforcement beam 20 can be used as a vibration absorber to absorb the vibration of the vehicle body, effectively expanding the modal frequency range of the front windshield cross beam assembly 100, and better attenuating the vibration frequencies of different acceleration sections and different vibration positions of the vehicle.

[0049] Alternatively, at least two of the connecting parts 23 have different thicknesses, and the thickness of the connecting part 23 is different from the thickness of the step part 11. In other words, the thicknesses of the multiple connecting parts 23 are different from each other, and the thicknesses of the multiple connecting parts 23 and the multiple step parts 11 are different from each other. With such an arrangement, each connecting part 23 can also have a different modal frequency to achieve a forced frequency design. Of course, it is also possible to combine the different length designs of the multiple connecting parts 23, so that the range of the modal frequency can be widened. By utilizing the modal frequency range of the multiple connecting parts 23 and the multiple step parts 11, different vibration frequencies during the driving process of the vehicle can be covered as much as possible, thereby effectively attenuating the vibration energy and effectively reducing the noise vibration inside the vehicle.

[0050] Furthermore, the dimensions of the two adjacent connecting portions in the length direction of the front windshield reinforcement beam 20 are respectively b and 大 and b 小 , b 大 and b 小 Satisfy the relationship: b 大 -b 小 ≥0.2b 小With such arrangement, the length difference between two adjacent connecting parts 23 is controlled to be more than one fifth of the length difference between the two connecting parts. With such arrangement, it can be well ensured that the lengths of the multiple connecting parts 23 are different from each other, that is, the modal frequencies of the multiple connecting parts 23 are different from each other, realizing the forced frequency design and effectively reducing the resonance of the vehicle body.

[0051] Further, the dimension of each connecting portion 23 in the length direction of the front windshield reinforcement beam 20 is D2, and D2 satisfies the relationship: 90mm≤D2≤240mm, and the thickness of each connecting portion 23 is B2, and B2 satisfies the relationship: 0.5mm≤B2≤0.8mm. In this way, the dimension of each connecting portion 23 in the length direction of the front windshield reinforcement beam 20 is set at 90mm-240mm, so that the dimension range of the connecting portion 24 in the length direction of the front windshield reinforcement beam 20 is narrower than the dimension range of the step portion 11 in the length direction of the front windshield lower cross beam 10. While ensuring that the dimensions of the multiple connecting portions 23 in the length direction of the front windshield reinforcement beam 20 are different from each other, it is also ensured that the modal frequency of the connecting portion 23 is different from the modal frequency of the step portion 11, so that the modal frequencies covered by the multiple connecting portions 23 and the multiple step portions 11 are wider, and it is conducive to better absorbing different vibrations of the vehicle body.

[0052] In addition, the thickness of the protrusion 21 is H, and H satisfies the relationship: 1mm≤H≤5mm. Such a configuration can not only enhance the structural strength of the front windshield reinforcement beam 20, but also prevent the protrusion 21 from protruding excessively from the surface of the front windshield reinforcement beam 20, so as to ensure that the overall thickness of the front windshield reinforcement beam 20 is relatively uniform, which is convenient for manufacturing and transportation.

[0053] And, the size of the protrusion 21 in the length direction of the front windshield reinforcement beam 20 is F, and F satisfies the relationship: 5mm≤F≤15mm. Such a setting can ensure that the front windshield reinforcement beam 20 is divided into a plurality of connection parts 23 of different lengths, thereby improving the overall structural strength of the front windshield reinforcement beam 20, and it is not easy for multiple protrusions 21 to break, and at the same time meet the lightweight design requirements. If the size of the protrusion 21 in the length direction of the front windshield reinforcement beam 20 is less than 5mm, the connection strength between two adjacent connection parts 23 will be weak, thereby failing to effectively improve the overall structural strength of the front windshield reinforcement beam 20; if the size of the protrusion 21 in the length direction of the front windshield reinforcement beam 20 is greater than 15mm, it will affect the number of connection parts 23 and the size constraint of each connection part 23 in the length direction of the front windshield reinforcement beam 20, thereby failing to effectively form a vibration absorber to absorb the vibration energy of the vehicle body, resulting in resonance.

[0054] In an embodiment of the present invention, the front windshield lower cross beam 10 and the front windshield reinforcement beam 20 can be welded. This arrangement allows the front windshield lower cross beam 10 and the front windshield reinforcement beam 20 to have better closure, thereby improving the structural strength of the front windshield cross beam assembly 100, and can effectively reduce the structural weight and save the number of parts. Of course, the connection between the front windshield lower cross beam 10 and the front windshield reinforcement beam 20 includes but is not limited to the welding connection described above. In addition, a flange is provided at the position where the front windshield reinforcement beam 20 is connected to the front windshield lower cross beam 10, so that the front windshield reinforcement beam 20 is well fixed and fit on the front windshield lower cross beam 10, and forms a closed structure with the front windshield lower cross beam 10.

[0055] Moreover, a plurality of weight-reducing holes 22 are provided on the front windshield reinforcement beam 20, and shock-absorbing and buffering parts are provided in the weight-reducing holes 22. Such a configuration can effectively reduce the overall weight of the front windshield reinforcement beam 20, so that the vehicle can achieve a lightweight design, and shock-absorbing and buffering parts can also be provided at the positions of the weight-reducing holes 22, so as to further improve the effective attenuation of the front windshield reinforcement beam 20 to specific frequency energy.

[0056] Specifically, a rubber sheet structure can be vulcanized at the position of the weight-reducing hole 22. The rubber sheet can be designed to be thick in the middle and thin around the structure, so that the thin rubber around the periphery forms the damping and stiffness of the vibration absorber, and the thick rubber in the middle forms the mass, thereby forming a shock-absorbing buffer with a vibration absorber structure to achieve attenuation of specific frequency energy.

[0057] The vehicle according to the second embodiment includes: the front windshield beam assembly 100 of the above embodiment, wherein brackets 30 are provided at both ends of the front windshield beam assembly 100 in the length direction to ensure that the front windshield beam assembly 100 is firmly fixed on the vehicle body frame.

[0058] Therefore, by arranging a plurality of step portions 11 in the length direction of the front windshield lower cross beam 10, and the thicknesses of the plurality of step portions 11 are different or the sizes of the plurality of step portions 11 in the length direction of the front windshield lower cross beam are different, the front windshield lower cross beam 10 is divided into a plurality of different step portions 11 from a whole piece of sheet metal. This not only improves the structural strength of the front windshield cross beam assembly 100, but also utilizes the local mode of each step portion 11 as a vibration absorber to absorb vibration, effectively attenuates the energy transferred by the engine-excited vibration, thereby achieving the purpose of reducing the vibration noise in the vehicle, improving the riding comfort of the passengers in the vehicle, and meeting the requirements of lightweight design of the vehicle.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0061] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A front windshield beam assembly, characterized in that: The front windshield cross beam assembly comprises: a front windshield lower cross beam and a front windshield reinforcement beam, the front windshield lower cross beam is arranged above the front windshield reinforcement beam, a plurality of step portions are arranged in the length direction and / or width direction of the front windshield lower cross beam, each of the step portions has a different thickness and / or a different size in the length direction of the front windshield lower cross beam, the projection shape of the front windshield lower cross beam on the lower surface is an inverted arch shape and the middle part of the inverted arch shape bulges backwards; the sizes of two adjacent step portions in the length direction of the front windshield lower cross beam are d 大 and d 小 , d 大 and d 小 Satisfy the relationship: d 大 -d 小 ≥0.2d 小 ; The dimension of each step portion in the length direction of the lower cross beam of the front windshield is D1, and D1 satisfies the relationship: 20mm≤D1≤300mm; and / or, the thickness of each step portion is B1, and B1 satisfies the relationship: 0.5mm≤B1≤0.8mm.

2. The front windshield cross beam assembly according to claim 1, characterized in that: The front windshield lower cross beam comprises: an upper plate portion, a front plate portion and a connecting plate portion, wherein the connecting plate portion is connected between the upper plate portion and the front plate portion, and a plurality of the step portions are arranged on the front plate portion.

3. The front windshield cross beam assembly according to claim 1, characterized in that: The projection shape of the front windshield reinforcement beam on the lower surface is an inverted arch and the middle part of the inverted arch bulges rearward. The front windshield reinforcement beam is provided with a plurality of protrusions, which are spaced apart in the length direction of the front windshield reinforcement beam and extend in the width direction.

4. The front windshield cross beam assembly according to claim 3, characterized in that: A connecting portion is formed between the two protrusions, the two adjacent connecting portions have different sizes in the length direction of the front windshield reinforcement beam, and the size of the connecting portion in the length direction of the front windshield reinforcement beam is different from the size of the step portion in the length direction of the front windshield lower cross beam; and / or, The thicknesses of two adjacent connecting portions are different, and the thickness of the connecting portion is different from the thickness of the step portion.

5. The front windshield cross beam assembly according to claim 4, characterized in that: The dimensions of two adjacent connecting portions in the length direction of the front windshield reinforcement beam are respectively 大 and b 小 , b 大 and b 小 Satisfy the relationship: b 大 -b 小 ≥0.2b 小 .

6. The front windshield cross beam assembly according to claim 4, characterized in that: The dimension of each connecting portion in the length direction of the front windshield reinforcement beam is D2, and D2 satisfies the relationship: 90 mm ≤ D2 ≤ 240 mm; and / or, The thickness of each connecting portion is B2, and B2 satisfies the relationship: 0.5mm≤B2≤0.8mm.

7. The front windshield cross beam assembly according to claim 3, characterized in that: The thickness of the protrusion is H, and H satisfies the relationship: 1mm≤H≤5mm; and / or, The dimension of the protrusion in the length direction of the front windshield reinforcement beam is F, and F satisfies the relationship: 5mm≤F≤15mm.

8. The front windshield cross beam assembly according to claim 3, characterized in that: A plurality of weight-reducing holes are arranged on the front windshield reinforcement beam, and shock-absorbing buffer parts are arranged in the weight-reducing holes.

9. A vehicle, characterized in that: include: The front windshield cross beam assembly according to any one of claims 1 to 8.

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