Front bumper structure and vehicle with same

Abstract

The invention relates to the field of front protectors, in particular to a front protector structure and a vehicle with the front protector structure, the front protector structure comprises a front protector body, and a sliding block structure is arranged on the front protector body; the sliding block structure comprises at least one guide sliding block arranged on the front bumper body, and a guide inclined plane is arranged on the guide sliding block; the guide inclined surface is intersected with the front end surface of the front anti-collision beam; according to the front bumper structure disclosed by the invention, through the arrangement of the sliding block structure, when pedestrian collision occurs subsequently, the sliding block structure plays a guiding role, so that the bulge on the front bumper body is conveniently clamped between the front bumper body and the front anti-collision beam; and therefore, excessive damage to collision personnel caused by excessive bulges between the front bumper body and the front anti-collision beam is reduced.

Description

Technical Field

[0001] The invention relates to the field of front bumpers, in particular to a front bumper structure and a vehicle having the front bumper structure. Background Art

[0002] The GB24550 pedestrian protection regulations will be officially implemented on January 1, 2025, and models launched later must meet this regulation before they are allowed to be sold.

[0003] Pedestrian protection performance has become an entry threshold and is a performance that must be met.

[0004] GB24550 pedestrian protection regulations cover the head and legs, among which the legs are closely related to the leg space of pedestrian protection.

[0005] Pedestrian protection legroom is the X-direction distance between the front bumper and the rear hard point (front anti-collision beam).

[0006] At present, mainstream car companies have relatively uniform requirements for this space, usually in the middle area Y = -400mm ~ +400mm, the space requirement is greater than 80mm; in the two side areas Y = +-500mm, the space requirement is greater than 60mm. This space is a big challenge for the increasingly shrinking front overhang.

[0007] When there is insufficient leg space for pedestrian protection, the leg cushioning is insufficient, which will cause greater damage to the pedestrian's legs in a subsequent pedestrian collision.

[0008] There are currently several mainstream solutions: for example, in the case of excessive bending moment, the damage to the legs caused by hard objects such as the front anti-collision beam can be reduced by adding front bumper foam or metal brackets; in the case of excessive ligament elongation, the structure or shape of the upper, middle and lower front bumper can be changed to control the overall movement posture of the legs when hitting the front bumper, thereby reducing the elongation of the ligaments; in the case of excessive bending moment and ligament elongation, the problem is often solved by changing the shape or lengthening the front overhang.

[0009] However, all of the above solutions involve significant modification costs.

[0010] Although the existing patent 201710376168.6-pedestrian protection device and pedestrian protection bumper can achieve pedestrian protection to a certain extent, the improvement plan is not suitable for solving the above-mentioned problems.

[0011] Therefore, in order to improve or solve at least one of the above problems, an auxiliary structure or an optimized design of the existing front protection structure is needed. Summary of the invention

[0012] The purpose of the present invention is to provide a front bumper structure which can reduce the loss rate of pedestrian legs when a pedestrian collision occurs.

[0013] In order to achieve the above object, the technical solution adopted by the present invention is:

[0014] A front bumper structure comprises a front bumper body, on which a slider structure is provided; the slider structure comprises at least one guide slider arranged on the front bumper body, on which a guide slope is provided; the guide slope is arranged to intersect with the front end surface of a front anti-collision beam.

[0015] The slider structure comprises a plurality of guide sliders, and the plurality of guide sliders are spaced apart and distributed in parallel.

[0016] The slider structure and the front protector body are an integrally formed structure.

[0017] At least one guide slider in the slider structure is located at the center of the lower edge of the front protection body.

[0018] In the slider structure, the spacing distance between the guide sliders far from the center of the front guard body is smaller than the spacing distance between the guide sliders close to the center of the front guard body.

[0019] Each of the guide sliding blocks partially overlaps with the main projection of the front anti-collision beam.

[0020] The front guard body comprises a front guard main body; a lap flange is arranged at the periphery of the front guard main body; and the slider structure is distributed at the connection between the front guard main body and the lap flange.

[0021] The overlapping flange is provided with a material reduction groove, each guide slider corresponds to a material reduction groove, and the material reduction groove extends from the overlapping flange away from the guide slider to the inside of the guide slider; a reinforcing rib beam is provided on the inner wall of the material reduction groove.

[0022] Each of the guide sliding blocks extends from the overlapping flange to the connection between the overlapping flange and the front protector body.

[0023] A vehicle comprises a front anti-collision beam and a front bumper structure; the front bumper structure and the front anti-collision beam are spaced and arranged relatively; a slider structure in the front bumper structure partially overlaps with a main projection of the front anti-collision beam.

[0024] The advantages of the present invention are:

[0025] The invention discloses a front bumper structure and a vehicle having the front bumper structure.

[0026] The front bumper structure disclosed in the present invention can achieve a guiding role when a pedestrian collision occurs subsequently through the setting of the slider structure, so that the protrusion on the front bumper body is conveniently stuck between the front bumper body and the front anti-collision beam, thereby reducing excessive damage to the colliding person caused by the excessive protrusion between the front bumper body and the front anti-collision beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0028] Figure 1 It is the front view of the front protection structure in the present invention.

[0029] Figure 2 It is a front view of the local structure when the slider structure is connected to the front protector body in the present invention.

[0030] Figure 3 It is a rear view of the local structure when the slider structure is connected to the front protector body in the present invention.

[0031] Figure 4 It is a structural schematic diagram of the first viewing angle when the slider structure is connected to the front protector body in the present invention.

[0032] Figure 5 for Figure 4 Top view of the .

[0033] Figure 6 for Figure 4 Axonometric drawing from another perspective.

[0034] Figure 7 It is a schematic diagram of the present invention when the legs of a pedestrian collide with the front bumper structure.

[0035] Figure 8 This is a schematic diagram of the present invention after colliding with a pedestrian's legs.

[0036] The marks in the above figure are:

[0037] 1. Front guard body, 2. Slider structure, 21. Guide slider. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0039] A front bumper structure comprises a front bumper body 1, on which a slider structure 2 is provided; the slider structure 2 comprises at least one guide slider 21 arranged on the front bumper body 1, on which a guide slope 211 is provided; the guide slope 211 is arranged to intersect with the front end surface of a front anti-collision beam 3; the front bumper structure disclosed in the present invention can achieve, through the arrangement of the slider structure 2, that when a pedestrian collision occurs subsequently, the slider structure 2 plays a guiding role, so that a protrusion on the front bumper body 1 is conveniently stuck between the front bumper body 1 and the front anti-collision beam 3, thereby reducing excessive damage to the colliding person caused by an excessively large protrusion between the front bumper body 1 and the front anti-collision beam 3.

[0040] The front fender structure disclosed in the present invention is mainly an improvement on the front fender assembly. The basis of the improvement on the front fender assembly of the present invention is to add a slider structure 2 to the traditional front fender assembly. The setting of the slider structure 2 can be optimized based on the existing front fender assembly, which can effectively reduce the development cycle of the front fender and reduce the cost of changes during vehicle version iterations. In addition, the changes are simple, and the development cycle and cost of the front fender are drastically reduced.

[0041] The front bumper structure disclosed in the present invention mainly includes a front bumper body 1, which is similar to the traditional front bumper body 1 structure, and a slider structure 2 is provided on the front bumper body 1 in the present invention; the slider structure 2 plays a guiding role. In the present invention, the slider structure 2 is arranged opposite to the front bumper beam 3, so that after a collision occurs at the front end of the vehicle, the slider structure 2 plays a good guiding role, which facilitates the local structure of the front bumper body 1 to pass over the front bumper beam 3 and reduces the amount of foreign matter between the front bumper structure and the front bumper beam 3.

[0042] In other words, the slider structure 2 provided in the present invention is mainly arranged at the protrusion of the front bumper body 1, and is set at a position where the protrusion is directly opposite to the front anti-collision beam 3. Through the setting of the slider structure 2, the present invention can drive the protrusion on this part of the front bumper body 1 to pass over the front anti-collision beam 3, thereby avoiding excessive protrusions between the front anti-collision beam 3 and the front bumper body 1; thereby better protecting pedestrians from retreating.

[0043] In addition, in the present invention, the slider structure 2 includes at least one guide slider 21 arranged on the front bumper body 1, and the guide slider 21 is provided with a guide inclined surface 211; the guide inclined surface 211 is arranged to intersect with the front end surface of the front anti-collision beam 3; in the present invention, the guide slider 21 has one function of increasing the structural strength of the front bumper body 1, and another function is to play a good guiding role, which facilitates the protrusion on the front bumper body 1 to pass over the front anti-collision beam 3.

[0044] In addition, in the present invention, the slider structure 2 includes a plurality of guide sliders 21, and the plurality of guide sliders 21 are spaced apart and distributed in parallel; in the present invention, the plurality of slider structures 2 are spaced apart in sequence along the Y direction of the vehicle; based on such a setting, protection can be provided in the width direction of the front end of the vehicle, and the front anti-collision beam 3 can be better used.

[0045] The running direction of the present invention is X direction, the wheel axial direction is Y direction; the height direction of the vehicle body is Z direction; this belongs to the known technology and will not be described here.

[0046] Furthermore, in the present invention, the slider structure 2 and the front guard body 1 are integrally formed structures; based on such a configuration, the integrity and consistency of the front guard structure can be ensured, and the production and processing of the front guard structure is facilitated.

[0047] In addition, in the slider structure 2 of the present invention, at least one guide slider 21 is located at the center of the lower edge of the front guard body 1; such a configuration can provide collision protection for the front center area of ​​the entire vehicle.

[0048] In addition, in the slider structure 2 described in the present invention, the spacing distance between the guide sliders 21 away from the center of the front guard body 1 is smaller than the spacing distance between the guide sliders 21 close to the center of the front guard body 1; such a setting is mainly because the sliding difficulty on both sides of the front guard body 1 is relatively large, so by reducing the spacing of the guide sliders 21, it is possible to ensure that the local structural strength of the front guard body 1 is increased, making it more convenient for the front guard structure to pass through the front anti-collision beam 3.

[0049] Furthermore, in the present invention, each of the guide sliders 21 partially overlaps with the main projection of the front anti-collision beam 3; based on this design, the guide slider 21 is arranged so that the lower end of the guide slider 21 exceeds the front anti-collision beam 3 in the longitudinal height. When a collision occurs subsequently, the inclined surface of the guide slider 21 can act on the edge of the front anti-collision beam 3, thereby playing a good guiding and limiting role, preventing the protrusion on the front anti-collision body 1 from entering the area between the front anti-collision body 1 and the front anti-collision beam 3.

[0050] Furthermore, the front guard body 1 described in the present invention includes a front guard body 11; an overlapping flange 12 is provided at the periphery of the front guard body 11; the front guard body 11 is the main structure on the front guard body 1, and an overlapping flange 12 is provided at the edge of the front guard body 11, and the overlapping flange 12 plays a good overlapping connection role, which facilitates the overlapping installation between the front guard body 1 and the adjacent panels. At the same time, the slider structure 2 described in the present invention is distributed at the connection between the front guard body 11 and the overlapping flange 12; such a setting can well ensure the structural strength between the overlapping flange 12 and the front guard body 11, and at the same time, it can also prevent the protrusion between the overlapping flange 12 and the front guard body 11 from entering the area between the front guard body 1 and the front anti-collision beam 3 when a subsequent collision occurs.

[0051] Furthermore, in the present invention, a material reduction groove 22 is provided on the overlapping flange 12. The provision of the material reduction groove 22 can reduce the overall weight of the front guard structure.

[0052] Specifically, in the present invention, each guide slider 21 corresponds to a material reduction groove 22, and the material reduction groove 22 extends from the side of the overlapping flange 12 away from the guide slider 21 to the inside of the guide slider 21; such a setting can ensure the structural strength of the front guard structure itself while reducing the overall structural weight of the front guard structure.

[0053] In addition, in the present invention, a reinforcing rib beam 23 is provided on the inner wall of the material reduction groove 22 , and the reinforcing rib beam 23 plays a good reinforcing role, thereby preventing the setting of the material reduction groove 22 from affecting the structural strength of the guide slider 21 .

[0054] At the same time, in the present invention, each of the guide sliders 21 extends from the overlapping flange 12 to the connection between the overlapping flange 12 and the front guard body 11; based on this design, it can be achieved that in subsequent use, when a subsequent collision occurs, the front guard body 11 contacts the front anti-collision beam 3, thereby avoiding the protrusions around the front guard body 11 from entering the area between the front guard body 11 and the front anti-collision beam 3; the protrusions on the front guard body 1 pass over the front anti-collision beam 3, and fully utilize the maximum space of the front guard structure, reducing the damage to the legs due to insufficient space between the front guard structure and the front anti-collision beam 3.

[0055] A vehicle comprises a front anti-collision beam 3 and a front bumper structure; the front bumper structure and the front anti-collision beam 3 are relatively distributed with an interval; a slider structure 2 in the front bumper structure partially overlaps with the main projection of the front anti-collision beam 3; through the above-mentioned design, the vehicle disclosed by the present invention is beneficial to the protection of the legs of pedestrians. Through the reasonable guidance of the slider structure 2, the front bumper structure slides as a whole and passes over the front anti-collision beam during subsequent use, thereby making full use of the maximum space of the front bumper structure and reducing the damage to the legs due to insufficient space.

[0056] specific:

[0057] The present invention discloses a front bumper structure, which mainly includes a front bumper body 1, on which a slider structure 2 is provided; the slider structure 2 includes at least one guide slider 21 arranged on the front bumper body 1, on which a guide slope 211 is provided; the guide slope 211 is arranged to intersect with the front end surface of a front anti-collision beam 3; the slider structure 2 includes a plurality of guide sliders 21, and the plurality of guide sliders 21 are spaced and distributed in parallel.

[0058] The front protection structure disclosed by the present invention can be beneficial to the protection of pedestrians' legs.

[0059] Furthermore, the slider structure 2 disclosed in the present invention can make the front protection structure slide as a whole and pass over the front anti-collision beam through reasonable guidance, so as to make full use of the maximum space of the front protection structure and reduce the damage to the legs due to insufficient space.

[0060] Compared with the traditional front guard structure, the front guard structure disclosed in the present invention adds five guide sliding blocks 21.

[0061] Each guide slider 21 is located at the collision position Y=0, Y=100mm, Y=-100mm, Y=200mm, and Y=-200mm of the leg of the front guard body 1 of the vehicle respectively; among them, at Y=200mm and Y=-200mm, considering that the slider is difficult to slide, two guide sliders 21 structures 2 are placed on one side.

[0062] Furthermore, in the present invention, the slider structure 2 is required to have a certain rigidity. When the slider is in action, it is necessary to ensure that the guide slider 21 is deformed as little as possible to prevent it from being stuck between the front protection structure and the front anti-collision beam due to excessive deformation; therefore, the slider structure 2 needs to have a larger material thickness and a stronger internal structure than the front protection structure.

[0063] Furthermore, the interior of the guide slider 21 is filled with horizontally and vertically intersecting reinforcing rib beams 23 to enhance the anti-deformation capability of the slider structure 2 .

[0064] Furthermore, the outer surface of the reinforcing rib beam 23 needs to ensure a high degree of smoothness, and the friction coefficient should be reduced as much as possible through process measures to ensure that the slider can slide smoothly behind the front anti-collision beam; if the process cannot guarantee this, an external coating or other smooth parts can be added to achieve this.

[0065] Furthermore, the slider structure 2 is integrally formed with the front guard structure, and the material is consistent with that of the front guard structure, and the material thickness needs to be 1.5-2 times the material thickness of the front guard body 11.

[0066] Furthermore, the slider structure 2 is located within the height range of the front anti-collision beam. During a collision, the slider structure 2 can slide over the front anti-collision beam.

[0067] Furthermore, the slider structure 2 disclosed in the present invention is usually an addition based on the existing front bumper structure, and is mainly arranged on the front bumper body 1 with protrusions at the corresponding positions of the front bumper body 1 and the front anti-collision beam 3, and is mainly used for sliding guidance, and is applied to situations where the traditional front bumper body 1 and leg space are insufficient.

[0068] The front protection structure disclosed in the present invention has the following technical effects:

[0069] The present invention only needs to add a slider structure 2 to the traditional front bumper body 1, with low modification cost, low weight gain, and short modification cycle; it is also suitable for old vehicle models, with optimized time and cost; the difficulty of re - opening a mold is greatly reduced compared to the traditional method; and the requirements for the vehicle body styling and the length of the front suspension are relaxed, reducing the development difficulty. Specific embodiments:

[0071] As Figure 1 shown, the front bumper structure disclosed by the present invention includes a front bumper body 1 and a slider structure 2. The slider structure 2 includes a plurality of guiding sliders 21. Based on different design positions, the guiding sliders 21 are respectively guiding slider 21a, guiding slider 21b, guiding slider 21c, guiding slider 21d, guiding slider 21e, guiding slider 21f, and guiding slider 21g.

[0072] Compared with the traditional front bumper structure, the front bumper structure disclosed by the present invention adds 7 guiding sliders 21.

[0073] Among them, the front bumper structure and the 7 - guiding - slider structure 2 are integrally formed, and the material used is PP + EPDM - T20, with a difference in material thickness.

[0074] The material thickness and structure of the guiding slider 21 need to be much stronger than other parts of the front bumper body 1 to prevent the slider structure 2 from being deformed too much during a collision, resulting in the slider structure 2 failing to play its due sliding role and being squeezed between the front bumper structure and the front anti - collision beam, thus failing to reduce the leg injury value of pedestrian protection.

[0075] The material thickness of the slider structure 2 usually needs to reach 1.5 - 2 times that of the front bumper structure.

[0076] The present invention includes guiding sliders 21 corresponding to the collision points at every 100 positions during the leg collision of pedestrian protection; at the same time, for any randomly selected collision points around the slider, the slider structure 2 can also play a corresponding sliding role.

[0077] Each guiding slider 21 is internally filled with a criss - cross rib beam 23 structure to enhance the anti - deformation ability of the guiding slider 21; among them, the rib beam 23 structure can adopt a combination of three horizontal ribs and one vertical rib, similar to the Chinese character "王"; it can also adopt a combination of four horizontal ribs and one vertical rib; specifically, it can be selected according to needs; it is required that the strength of the guiding sliders 21 on both sides is greater than that of the guiding sliders 21 in the middle region. Based on such a setting, a better guiding and protecting effect can be achieved.

[0078] In the present invention, the outer surface of each guiding slider 21 needs to ensure a large smoothness, and as much as possible, through process measures such as polishing or surface film - sticking, the friction coefficient is reduced to ensure that the slider can smoothly slide over the front anti - collision beam.

[0079] The inclination direction of the slider structure 2 is a slope with the upper end away from the front anti-collision beam and the lower end close to the front anti-collision beam; the inclination angle is 46 degrees.

[0080] The slider structure 2 is usually applied to situations where the inner space of the pedestrian protection leg is insufficient.

[0081] Pedestrian protection leg space is the available X-direction distance between the front bumper structure and the rear hard point (front anti-collision beam).

[0082] At present, the requirements of mainstream car companies for this space are basically unified. Usually, in the middle area Y=-400mm~+400mm, the space requirement is greater than 80mm; outside the two side areas Y=+-500mm, the space requirement is greater than 60mm.

[0083] When there is a local hard protrusion within the height range of the front anti-collision beam, resulting in insufficient internal space for pedestrian protection legs, and there is a large available space in other parts, the front protection structure disclosed in the present invention can play an ideal role in reducing the pedestrian protection injury value.

[0084] The role of the present invention in pedestrian protection is as follows Figure 7 As shown, Figure 7 This is a global schematic diagram of the pedestrian protection leg before collision of the present invention.

[0085] Within the height range of the front anti-collision beam, there is a relatively rigid structure, namely the connection structure between the upper body and the lower body of the front bumper structure.

[0086] The available distance between the front bumper structure and the rear hard point (front bumper beam) in the X direction is only about 50 mm. If there is no slider structure 2 in the present invention, after the pedestrian's legs hit the front bumper structure, the middle part of the leg cannot move forward further because the connection structure there is strong. At the same time, the pedestrian's legs and the upper and lower parts will continue to move forward for a distance due to inertia.

[0087] The pedestrian's legs will rebound in an exaggerated C-shape, and the elongation of the ligaments at the knees, especially the middle ligament elongation MCL, will far exceed the regulatory limit. The bending moment T1 near the hard structure will also far exceed the regulatory limit.

[0088] Figure 8 Schematic diagram of the pedestrian protection leg at the slider after collision.

[0089] After adding the slider structure 2, due to the existence of the guide slider 21, the front guard structure slides as a whole and passes over the front anti-collision beam. At this time, the space available for the legs of pedestrians is increased until the outer surface of the front guard structure skin touches the front anti-collision beam, and the legs of pedestrians begin to rebound. At this time, the upper, middle and lower parts of the legs of pedestrians are subjected to relatively uniform force, almost in a straight line. The elongation of the ligaments at the knees of the pedestrians and T1 close to the hard structure are significantly reduced, which can obviously form protection for the legs.

[0090] The present invention only needs to add a slider structure 2 to the front protection structure, which has low modification cost, small weight increase and short modification cycle.

[0091] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A front protection structure, characterized in that: It comprises a front guard body, on which a slider structure is arranged; the slider structure comprises at least one guide slider arranged on the front guard body, on which a guide slope is arranged; the guide slope is arranged to intersect with the front end surface of the front anti-collision beam.

2. A front protection structure according to claim 1, characterized in that: The slider structure comprises a plurality of guide sliders, and the plurality of guide sliders are spaced apart and distributed in parallel.

3. A front protection structure according to claim 2, characterized in that: The slider structure and the front guard body are an integrally formed structure.

4. A front protection structure according to any one of claims 1-2, characterized in that: At least one guide slider in the slider structure is located at the center of the lower edge of the front protection body.

5. A front protection structure according to any one of claims 1 to 3, characterized in that: In the slider structure, the spacing distance between the guide sliders far from the center of the front guard body is smaller than the spacing distance between the guide sliders close to the center of the front guard body.

6. A front protection structure according to claim 1, characterized in that: Each of the guide sliding blocks partially overlaps with the main projection of the front anti-collision beam.

7. The front protection structure according to claim 1, characterized in that: The front guard body comprises a front guard main body; a lap flange is arranged at the periphery of the front guard main body; and the slider structure is distributed at the connection between the front guard main body and the lap flange.

8. A front protection structure according to claim 7, characterized in that: The overlapping flange is provided with a material reduction groove, each guide slider corresponds to a material reduction groove, and the material reduction groove extends from the overlapping flange away from the guide slider to the inside of the guide slider; a reinforcing rib beam is provided on the inner wall of the material reduction groove.

9. The front protection structure according to claim 7, characterized in that: Each of the guide sliding blocks extends from the overlapping flange to the connection between the overlapping flange and the front protector body.

10. A vehicle, characterized in that: It comprises a front bumper beam and a front bumper structure as claimed in any one of claims 1 to 9; the front bumper structure and the front bumper beam are spaced apart and relatively distributed; the slider structure in the front bumper structure partially overlaps with the main projection of the front bumper beam.

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