Front longitudinal beam reinforcement structure

Abstract

The present invention provides a front longitudinal beam reinforcement structure, which belongs to the field of machinery. The front longitudinal beam reinforcement structure provided by the present invention includes a front longitudinal beam and a reinforcement plate; a groove is provided on one side of the front longitudinal beam; the reinforcement plate is arranged in the groove, and has a portion fixed to the bottom of the groove; a rib groove is provided on one side of the reinforcement plate relative to the bottom of the groove, the opening of the rib groove is in the same direction as the opening of the groove, and a gap is left between the bottom of the rib groove and the bottom of the groove; a reinforcement rib is arranged in the rib groove. The front longitudinal beam reinforcement structure of the present application has a gap reserved between the reinforcement plate and the front longitudinal beam in the induced bending area, and reinforcement ribs are added to the reinforcement plate to penetrate the front and rear sides, thereby effectively solving the problem of poor energy absorption effect of the front longitudinal beam reinforcement plate in the existing situation.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a front longitudinal beam reinforcement structure. Background Art

[0002] With the increasing progress of the economy and society, automobile lightweight design and collision safety design have become two major challenges for the automobile industry, and lightweight and collision performance are often contradictory. Therefore, improving the lightweight level and collision safety performance of automobiles at the same time has always been the focus and hot spot of automobile body structure design. The front longitudinal beam of the car body bears most of the impact kinetic energy when the car is in a head-on collision. It is an important energy-absorbing component of the car body. As the main energy-absorbing component of the car head-on collision, the induced structure of the front longitudinal beam has an important influence on the crashworthiness.

[0003] like Figure 1a and Figure 1b As shown, in the prior art, the bending deformation position of the middle section of the front longitudinal beam is often guided by adding induction ribs. In order to improve the energy absorption of the bending deformation, a reinforcement plate structure is usually added at the induction rib position. The energy absorption effect of different reinforcement plate structures varies greatly. At present, there are mainly two types of reinforcement plates: one, such as Figure 2 As shown in the figure, the induction rib position is not welded, and a large gap is maintained between the reinforcing plate and the front longitudinal beam in this area. The induction rib position is not reinforced, which is conducive to inducing the front longitudinal beam to bend in this area. However, due to the less welding between the reinforcing plate and the front longitudinal beam, the reinforcement effect is not obvious, and the bending energy absorption is less; second, as shown in the figure, the reinforcing plate and the front longitudinal beam are not welded, the reinforcing effect is not obvious, and the bending energy absorption is less. Figure 3 As shown, the reinforcement plate is bonded and welded to the front longitudinal beam under the premise of meeting the anti-corrosion requirements. Although such a reinforcement plate structure also strengthens the induction ribs, theoretical analysis and actual vehicle tests often cannot guide the longitudinal beam to bend at this position, resulting in failure of the induction ribs.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The invention provides a front longitudinal beam reinforcement structure to solve the problem that the energy absorption effect of the front longitudinal beam reinforcement plate is poor in the prior art.

[0006] To solve the above problems, the present invention adopts the following solutions:

[0007] A front longitudinal beam reinforcement structure, comprising a front longitudinal beam and a reinforcement plate;

[0008] A groove is provided on one side of the front longitudinal beam;

[0009] The reinforcing plate is arranged in the groove and has a portion fixed to the bottom of the groove. A rib groove is arranged on one side of the reinforcing plate relative to the bottom of the groove. The opening of the rib groove is in the same direction as the opening of the groove, and a gap is left between the bottom of the rib groove and the bottom of the groove. A reinforcing rib is arranged in the rib groove.

[0010] The structure of this scheme is mainly used to solve the problem of poor energy absorption effect of the front longitudinal beam reinforcement plate in the existing situation. A groove is arranged on one side of the front longitudinal beam, and the reinforcement plate is arranged in the groove. The application of the reinforcement plate is beneficial to the deformation mode control and collision energy absorption of the front longitudinal beam; in addition, the reinforcement plate is provided with a rib groove near the bottom of the groove, and the rib groove is provided with a reinforcing rib. The setting of the reinforcing rib can effectively improve the energy absorption effect of the reinforcement plate in bending deformation. The opening of the rib groove is consistent with the opening direction of the groove, and a gap is left between the bottom of the rib groove and the bottom of the groove, that is, a certain gap is reserved between the reinforcement plate and the front longitudinal beam in the area where bending and deformation are required to ensure that the bending and deformation of the front longitudinal beam can be successfully guided.

[0011] Preferably, the middle of the bottom of the groove is fixedly connected to the middle of the bottom of the reinforcing plate, and the two inner side walls of the groove are fixedly connected to the two outer side walls of the reinforcing plate. In order to ensure both the reinforcing effect and the induced bending effect, the middle of the bottom of the groove in this solution is fixedly connected to the middle of the bottom of the reinforcing plate, and the two inner side walls of the groove are fixedly connected to the two outer side walls of the reinforcing plate; the middle of the reinforcing plate is fixedly connected to the front longitudinal beam, which can ensure the reinforcing effect, and there is a gap between the induced bending area and the front longitudinal beam, which can ensure the induced bending effect.

[0012] Preferably, the rib groove includes a rib groove A and a pair of rib grooves B, the rib groove A is located in the middle of the bottom of the reinforcing plate, and the extension directions of the rib groove A and the rib groove B are the same; the reinforcing rib extends along the length direction of the rib groove A.

[0013] In order to enhance the energy absorption effect of the reinforcement plate during bending deformation, reinforcement ribs are arranged in the rib groove A and a pair of rib grooves B. The reinforcement ribs extend along the length direction of the rib groove A, so that no matter where the end of the front longitudinal beam is bent, the energy absorption effect during bending deformation can be ensured by the reinforcement ribs at the corresponding position.

[0014] Preferably, the pair of rib grooves B are symmetrically arranged at the bottom of the reinforcing plate, and the depths of the rib groove A and the rib groove B are the same, so that the reinforcing plate can be more stable in overall structure.

[0015] Preferably, a protrusion is provided in the middle of the bottom of the front longitudinal beam, and the protrusion is fixedly connected to the rib groove A to avoid the reinforcement plate from being suspended in the air, thereby improving the reinforcement effect.

[0016] The protrusion is fixedly connected to the rib groove A, such as by welding, and its main function is to prevent the reinforcement plate from being suspended in the air and to enhance the reinforcement effect. In order to facilitate inducing the front longitudinal beam to bend in this area, the bottom of the protrusion is connected to the bottom of the rib groove A to form a reinforcement plate structure that is fixed in the middle and suspended on both sides, thereby facilitating bending at the reinforcement ribs on both sides of the reinforcement plate.

[0017] Preferably, the groove is arranged along the extension direction of the front longitudinal beam, that is, the reinforcing plate is arranged along the extension direction of the front longitudinal beam, which greatly improves the overall collision resistance of the front longitudinal beam.

[0018] Preferably, the bottom width of the rib groove is less than 1 / 3 of the bottom width of the groove. If the bottom width of the rib groove is too wide, the connection surface between the protrusion and the bottom of the rib groove A will be smaller, and the reinforcing plate will be less connected to the front longitudinal beam, which may easily lead to less bending energy absorption and unclear reinforcement effect.

[0019] Preferably, the outer sides of the reinforcing plate are fitted with the inner sides of the front longitudinal beam. In order to ensure the stability of the reinforcing plate during installation and prevent relative movement between the reinforcing plate and the front longitudinal beam, the outer sides of the reinforcing plate in this solution are fitted with the inner sides of the front longitudinal beam, and the outer side of the bottom of the reinforcing plate is fixed to the inner side of the bottom of the front longitudinal beam, so that the reinforcing plate can be fixed in the groove of the front longitudinal beam.

[0020] The gap is 6 mm and the depth of the rib groove is 8 mm.

[0021] In order to ensure the energy absorption effect of the bending of the front longitudinal beam and the reinforcement ribs, this scheme has been tested through a large number of experiments and found that when the gap is 6mm and the depth of the rib groove is 8mm, it can effectively ensure that the above performance is at a good level and facilitate the installation of the reinforcement plate inside the groove of the front longitudinal beam.

[0022] Preferably, the bottom of the groove is parallel to the bottom of the rib groove, so that the front longitudinal beam corresponds to the reinforcing rib on the same side thereof when bending, thereby ensuring the energy absorption effect of the reinforcing rib during bending deformation.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present application provides a front longitudinal beam reinforcement structure, comprising a front longitudinal beam and a reinforcement plate, wherein a groove is arranged on one side of the front longitudinal beam, and a portion fixed to the bottom of the groove exists to ensure the reinforcement effect, and a reinforcement plate is arranged in the groove, and the application of the reinforcement plate is beneficial to the deformation mode control and collision energy absorption of the front longitudinal beam; a reinforcement rib is arranged on one side of the reinforcement plate relative to the bottom of the groove, and the energy absorption effect of the reinforcement plate in bending deformation is improved by the reinforcement rib; to ensure that the bending deformation of the front longitudinal beam can be successfully guided, the front longitudinal beam cannot be reinforced at the two end areas of the front longitudinal beam, so a gap is left between the bottom of the rib groove and the bottom of the groove, and the setting of the gap can successfully guide the front longitudinal beam to bend at this position, and after using this structure, the downward trend of the collision acceleration of the vehicle is significantly changed, and the energy absorption effect is obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1a and Figure 1b A schematic structural diagram of a conventional front longitudinal beam reinforcement plate from two different perspectives provided as the background technology of the present invention;

[0027] Figure 2 One of the conventional front longitudinal beam reinforcement plates provided as the background technology of the present invention;

[0028] Figure 3 The second form of the traditional front longitudinal beam reinforcement plate provided by the background technology of the present invention;

[0029] Figure 4 A schematic structural diagram of a front longitudinal beam reinforcement plate structure provided by an embodiment of the present invention;

[0030] Figure 5 for Figure 4 BB cross-sectional view of the structural schematic diagram shown.

[0031] In the above drawings, the components represented by the reference numerals are listed as follows:

[0032] Front longitudinal beam of old structure—a; reinforcement plate of old structure—b; induction rib of old structure—c; front longitudinal beam—1; reinforcement plate—2; rib groove A—3; rib groove B—4; protrusion—5. DETAILED DESCRIPTION

[0033] In order to make the above and other features and advantages of the present invention more clear, the present invention is further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are only exemplary and not restrictive.

[0034] 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.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] Please refer to Figure 4 and Figure 5 As shown, the front longitudinal beam reinforcement structure provided by the present invention includes a front longitudinal beam 1 and a reinforcement plate 2; a groove is arranged on one side of the front longitudinal beam 1; the reinforcement plate 2 is arranged in the groove, and there is a part fixed to the bottom of the groove, and a rib groove is arranged on one side of the reinforcement plate 2 relative to the bottom of the groove, the opening of the rib groove is in the same direction as the opening of the groove, and a gap is left between the bottom of the groove; a reinforcement rib is arranged in the rib groove.

[0040] It should be noted that the rib grooves in the present solution are named mainly for the convenience of describing the structure or profile of the reinforcing ribs. In a specific embodiment, the rib grooves in the figure can be regarded as the reinforcing ribs themselves.

[0041] As is known to all, the left and right front longitudinal beams located at the front of the vehicle body play a major role in absorbing energy in frontal collisions, etc., and are also the main structure for resisting deformation of the cab. Usually, the front part of the front longitudinal beam 1 plays a major role in absorbing energy, while the rear part of the front longitudinal beam 1 is close to the cab, so it is necessary to resist deformation in the event of a frontal collision or an offset collision, reduce the amount of intrusion into the cab during the collision, and protect the personal safety of the driver and passengers.

[0042] The strength of the existing front longitudinal beam of an automobile cannot ensure sufficient protection for the driver and passengers during a frontal collision of the automobile. Therefore, it often causes great harm to the driver and other passengers during the collision. To avoid or reduce such harm, in addition to increasing the thickness or using materials with greater strength, the structure of the front longitudinal beam can also be improved to have a reasonable buffer and energy absorption structure. When the vehicle is impacted frontally, the front longitudinal beam structure is crushed and deformed by itself to obtain a satisfactory energy absorption effect, thereby reducing the force and acceleration acting on the occupants, and thus reducing the harm to the personnel and ensuring personal safety. In view of this, many existing technologies have provided reinforcing plates inside the front longitudinal beam of the automobile. The reinforcing plate of the front longitudinal beam of the automobile can effectively absorb and attenuate the impact energy during the vehicle collision, greatly enhancing the force transmission performance of the rear load-bearing area, and being able to absorb more impact energy during deformation. However, the energy absorption effect of the reinforcing plate of the front longitudinal beam in the existing technology is relatively poor and still cannot fully meet the usage requirements.

[0043] The structure of this solution is mainly used to solve the problem of poor energy absorption effect of the reinforcing plate of the front longitudinal beam in the existing situation. A groove is provided on one side of the front longitudinal beam 1, and the reinforcing plate 2 is cooperatively arranged in the groove. There is a part of the reinforcing plate 2 that is fixed to the bottom of the groove. The application of the reinforcing plate 2 is beneficial to the control of the deformation mode of the front longitudinal beam 1 and the absorption of collision energy. The cross-section of the groove in this solution is approximately "U"-shaped, and the cross-section of the reinforcing plate 2 cooperatively arranged therein is also approximately "U"-shaped. The bottom parts of the two are in contact and connected to each other. In addition, a rib groove is provided at the bottom of the reinforcing plate 2 close to the groove, and a reinforcing rib is cooperatively arranged in the groove. The reinforcing rib extends along the length direction of the rib groove. The energy absorption effect of the reinforcing plate 2 during bending deformation is improved by increasing the reinforcing rib. The opening of the rib groove is in the same direction as the opening of the groove, and there is a gap between the bottom of the rib groove and the bottom of the groove. That is, in the area where bending deformation is required, there is a certain gap between the reinforcing plate 2 and the front longitudinal beam 1 to ensure the successful guidance of the bending deformation of the front longitudinal beam 1.

[0044] To ensure both the strengthening effect and the induced bending effect at the same time, the middle part of the bottom of the groove in this solution is fixedly connected to the middle part of the bottom of the reinforcing plate 2, and the two inner side walls of the groove are fixedly connected to the two outer side walls of the reinforcing plate 2. The middle part of the reinforcing plate 2 is fixedly connected to the front longitudinal beam 1, which can ensure the strengthening effect, and there is a gap between the induced bending area and the front longitudinal beam 1, which can ensure the induced bending effect.

[0045] Furthermore, the rib groove includes a rib groove A3 and a pair of rib grooves B4. The rib groove A3 is located in the middle of the bottom of the reinforcing plate 2, and the extending directions of the rib groove A3 and the rib grooves B4 are the same. The reinforcing rib extends along the length direction of the rib groove A3.

[0046] In order to improve the energy absorption effect of the reinforcing plate 2 during bending and deformation, a rib groove A3 and a pair of rib grooves B4 are arranged on the side of the reinforcing plate 2 opposite to the bottom of the groove, the rib groove A3 is located in the middle of the bottom of the reinforcing plate 2, and the extension direction of the rib groove A3 and the rib groove B4 is the same; the reinforcing ribs extend along the length direction of the rib groove A3 or the rib groove B4; so that no matter how the end of the front longitudinal beam 1 is bent, the energy absorption effect during bending and deformation can be ensured by the reinforcing ribs at the corresponding position, and a gap is left between the bottom of the rib groove B4 and the bottom of the groove, that is, a certain gap is reserved between the reinforcing plate 2 and the front longitudinal beam 1 in the area where bending and deformation are required to ensure that the front longitudinal beam 1 can be successfully guided to bend and deform; if the reinforcing ribs set on one side are used in this scheme, when the bending direction of the front longitudinal beam 1 is different from the arrangement area of ​​the reinforcing ribs, the reinforcing ribs cannot achieve a good energy absorption effect.

[0047] In order to enhance the energy absorption effect of the reinforcing plate 2 during bending deformation, reinforcing ribs are arranged in the rib groove A3 and a pair of rib grooves B4. The reinforcing ribs extend along the length direction of the rib groove A3 or the rib groove B4, so that no matter where the end of the front longitudinal beam 1 is bent, the energy absorption effect during bending deformation can be ensured by the reinforcing ribs at the corresponding position.

[0048] In another embodiment, a pair of rib grooves B4 are symmetrically arranged at the bottom of the reinforcing plate 2, and the depths of the rib grooves A3 and B4 are the same, so that the reinforcing plate 2 can be more stable in overall structure.

[0049] Furthermore, a protrusion 5 is provided in the middle of the bottom of the front longitudinal beam 1 , and the protrusion 5 is fixedly connected to the rib groove A3 to prevent the reinforcing plate 2 from being suspended in the air, thereby improving the reinforcing effect.

[0050] The protrusion 5 is fixedly connected to the rib groove A3, such as by welding, and its main function is to prevent the reinforcing plate 2 from being suspended in the air and to enhance the reinforcing effect. In order to facilitate inducing the front longitudinal beam 1 to bend in this area, the bottom of the protrusion 5 and the bottom of the rib groove A3 are connected to each other to form a reinforcing structure that is fixed in the middle and suspended on both sides, thereby facilitating bending at the reinforcing ribs on both sides of the reinforcing plate 2; in this embodiment, the top of the protrusion 5 and the bottom of the rib groove A3 are both horizontally arranged and can fit each other for easy welding; in another embodiment, it is only necessary to satisfy that the top of the protrusion 5 and the bottom of the rib groove A3 are parallelly arranged; during specific manufacturing, a certain gap is left between the reinforcing rib and the bottom and side wall of the front longitudinal beam 1; the cross-section of the connecting surface between the rib groove B4 and the side wall of the reinforcing plate 2 is an outwardly convex arc shape, and the arc surface is located above the bottom of the reinforcing plate 2, thereby facilitating that this area will not suffer brittle fracture due to excessive stress concentration during collision.

[0051] Furthermore, the gap is 6 mm and the depth of the rib groove is 8 mm.

[0052] In order to ensure the energy absorption effect of the bending and reinforcement ribs of the front longitudinal beam 1, a large number of experiments have shown that when the gap is 6mm and the depth of the rib groove is 8mm, under the same collision condition, the front longitudinal beam 1 bends and deforms, and the downward trend of the collision acceleration changes significantly, from 30g to about 20g, and the energy absorption effect is obvious.

[0053] Furthermore, the groove is arranged along the extension direction of the front longitudinal beam 1 , that is, the reinforcing plate 2 is arranged along the extension direction of the front longitudinal beam 1 , which greatly improves the overall collision resistance of the front longitudinal beam 1 .

[0054] In specific applications, the groove is arranged along the extension direction of the front longitudinal beam 1, that is, the reinforcing plate 2 is arranged along the extension direction of the front longitudinal beam 1, so that multiple edges of the reinforcing plate 2 can penetrate the extension direction of the front longitudinal beam 1. When a collision occurs, the application of the reinforcing plate 2 makes the front longitudinal beam 1 have a stepped distribution of performance from front to back, which is more conducive to the deformation mode control and collision energy absorption of the front longitudinal beam 1; reinforcing ribs are arranged on both sides of the bottom of the reinforcing plate 2 close to the groove, and the energy absorption effect of the reinforcing plate 2 during bending deformation is improved by the reinforcing ribs.

[0055] Furthermore, the bottom width of the rib groove A3 is less than 1 / 3 of the bottom width of the groove. If the bottom width of the rib groove A3 is too wide, the connection surface between the bottom of the protrusion 5 and the bottom of the rib groove A3 will be smaller, and the reinforcing plate 2 will be less connected to the front longitudinal beam 1, which may easily lead to less bending energy absorption and unclear reinforcement effect. When the bottom width of the rib groove A3 is less than 1 / 3 of the bottom width of the groove, the connection surface between the protrusion 5 and the rib groove A3 can be larger and the welding can be more firm.

[0056] Furthermore, the outer sides of the reinforcing plate 2 are fitted with the inner sides of the front longitudinal beam 1. In order to ensure the stability of the reinforcing plate 2 during installation and prevent relative movement between the reinforcing plate 2 and the front longitudinal beam 1, in this solution, the outer sides of the reinforcing plate 2 are fitted with the inner sides of the front longitudinal beam 1, and the outer side of the bottom of the reinforcing plate 2 is fixed to the inner side of the bottom of the front longitudinal beam 1, so that the reinforcing plate 2 can be fixed in the groove of the front longitudinal beam 1.

[0057] Furthermore, the bottom of the groove is parallel to the bottom of the rib groove, so that the front longitudinal beam 1 can correspond to the reinforcing rib on the same side thereof when being bent, thereby ensuring the energy absorption effect of the reinforcing rib during bending deformation.

[0058] The present application provides a front longitudinal beam reinforcement structure, wherein a groove is provided on one side of the front longitudinal beam 1, and there is a part on the front longitudinal beam 1 that is fixed to the bottom of the groove to ensure the reinforcement effect, and a reinforcement plate 2 is arranged in the groove, which is beneficial to the deformation mode control and collision energy absorption of the front longitudinal beam 1; a reinforcement rib is provided on the side of the reinforcement plate 2 relative to the bottom of the groove, and the energy absorption effect of the reinforcement plate 2 in bending deformation is improved by the reinforcement rib; to ensure that the front longitudinal beam 1 can be successfully guided to bend and deform, the front longitudinal beam 1 cannot be reinforced at both end areas of the front longitudinal beam 1, so a gap is left between the bottom of the rib groove and the bottom of the groove, and the front longitudinal beam 1 can be successfully guided to bend at this position by setting the gap, and relevant experiments have verified that when the device is installed on the front longitudinal beam 1 of the automobile, the downward trend of the collision acceleration of the automobile changes significantly, and the energy absorption effect is obvious.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A front longitudinal beam reinforcement structure, characterized in that: It comprises a front longitudinal beam and a reinforcing plate, wherein the reinforcing plate is arranged in an area where the front longitudinal beam needs to be bent and deformed; A groove is provided on one side of the front longitudinal beam; The reinforcing plate is arranged in cooperation with the groove, and has a portion fixed to the bottom of the groove; a rib groove is arranged on one side of the reinforcing plate relative to the bottom of the groove, the opening of the rib groove is in the same direction as the opening of the groove, and a gap is left between the bottom of the rib groove and the bottom of the groove; reinforcing ribs are arranged in cooperation with the rib groove; The middle part of the bottom of the groove is fixedly connected to the middle part of the bottom of the reinforcing plate, and the two inner side walls of the groove are fixedly connected to the two outer side walls of the reinforcing plate; The rib grooves include a rib groove A and a pair of rib grooves B, the rib groove A is located in the middle of the bottom of the reinforcing plate, and the rib groove A and the rib groove B have the same extension direction; the reinforcing ribs extend along the length direction of the rib groove A; the pair of rib grooves B are symmetrically arranged at the bottom of the reinforcing plate, and the depths of the rib groove A and the rib groove B are the same; A protrusion is provided in the middle of the bottom of the front longitudinal beam, and the protrusion is fixedly connected to the rib groove A. A gap is formed between the rib groove B and the bottom of the groove in the area where the front longitudinal beam needs to be bent and deformed, and the gap is 6 mm. The depth of the rib groove A and the rib groove B is 8 mm.

2. The front longitudinal beam reinforcement structure according to claim 1, characterized in that: The groove is arranged along an extending direction of the front longitudinal beam.

3. The front longitudinal beam reinforcement structure according to claim 1, characterized in that: The bottom width of the rib groove is less than 1 / 3 of the bottom width of the groove.

4. The front longitudinal beam reinforcement structure according to claim 3, characterized in that: The outer sides of both sides of the reinforcing plate are fitted with the inner sides of both sides of the front longitudinal beam.

5. The front longitudinal beam reinforcement structure according to any one of claims 1 to 4, characterized in that: The bottom of the groove is parallel to the bottom of the rib groove.

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