Headlamp support based on pedestrian leg protection

Abstract

The utility model discloses a headlamp support based on pedestrian leg protection, the distance between an inducing groove formed in one surface of the headlamp support and the left end face of the headlamp support is 43 mm, the grooving size of the inducing groove formed in the one surface of the headlamp support is 48.1 mm * 4.9 mm * 6.0 mm, the distance between an inducing groove formed in the second surface of the headlamp support and the upper end face of the second surface of the headlamp support is 32 mm, and the grooving size of the inducing groove formed in the other surface of the headlamp support is 48.1 mm * 4.9 mm * 6.0 mm. The induction groove is additionally formed in the headlamp support, so that the headlamp support is broken when colliding with pedestrians, and damage to the legs of the pedestrians is reduced; the headlamp generates larger displacement during collision by reducing the X-direction rigidity of the mounting bracket, the first headlamp bracket is connected with the mounting hole of the mounting bracket through a bolt, and the X-direction rigidity of the headlamp mounting bracket is reduced, so that the X-direction displacement is larger during collision, the breakage of the headlamp bracket is facilitated, the protection requirement on pedestrians is met, and the safety of the pedestrians is improved. And meanwhile, the structure is simple, and implementation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle headlamp support technical field especially relates to a front headlamp support based on pedestrian leg protection. BACKGROUND

[0002] According to world health organization WHO data statistics, every year more than 1300 million people are fatally injured because of traffic accidents in the world, two-wheeled vehicle riders and pedestrians account for 31% and 23% respectively, and the mortality rate of VRU (vulnerable road user) is more than 50%. Road safety has developed into a global social problem, and our country has promulgated the corresponding mandatory national standard and will be implemented on January 1, 2025.

[0003] In the field of pedestrian protection collision safety, the lower leg type is one of important components. Due to the structure and material of the headlamp, its rigidity is too high, which greatly affects the ligament elongation of the lower leg type, causes too much damage to the lower leg type, and does not meet the requirements of the national standard. At present, the optimization of the lower leg type in the headlamp area is generally achieved by changing the material and thickness of the support to make the headlamp collapse when it is subjected to collision, that is, the headlamp support is broken. After the support is broken, the headlamp will be displaced backward, reducing the rigidity of the area, thereby meeting the requirements of the national standard. The optimization scheme often causes the headlamp support to be not broken or not broken enough in the test, resulting in excessive ligament elongation.

[0004] In the prior art, the headlamp support is not broken or not broken enough during collision, which is easy to cause excessive ligament elongation, and the rigidity of the existing headlamp mounting support is too high, which causes insufficient X-direction displacement of the headlamp and is not easy to break, which is easy to cause serious injury to the legs of pedestrians. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the present application provides a front headlamp support based on pedestrian leg protection, which makes the headlamp support break and the headlamp collapse backward by two schemes to reduce the ligament elongation of the legs of pedestrians and reduce the injury to the legs of pedestrians.

[0006] To achieve the above-mentioned purpose, the present application provides a front headlamp support based on pedestrian leg protection, which comprises:

[0007] a headlamp main body;

[0008] a headlamp support one, located on the side surface of the headlamp main body;

[0009] a headlamp support two, located at the top end of the headlamp main body;

[0010] an induction groove, provided on the surface of the headlamp support one and the headlamp support two, wherein a hole site is provided in the induction groove on the surface of the headlamp support one;

[0011] mounting frame, the headlamp bracket one is connected with the headlamp body through the mounting frame;

[0012] mounting hole, the mounting hole is arranged on the surface of the mounting frame.

[0013] In the technical scheme of the embodiment of the application, the distance from the guide groove arranged on the surface of the headlamp bracket one to the left end face is 43mm.

[0014] In the technical scheme of the embodiment of the application, the size of the guide groove arranged on the surface of the headlamp bracket one is 48.1mm*4.9mm*6.0mm.

[0015] In the technical scheme of the embodiment of the application, the size of the hole arranged in the guide groove arranged on the surface of the headlamp bracket one is 7.5mm*4.1mm.

[0016] In the technical scheme of the embodiment of the application, the distance from the guide groove arranged on the surface of the headlamp bracket two to the upper end face is 32mm, and the size of the guide groove arranged on the surface of the headlamp bracket two is 34.6mm*3.3mm*4.4mm.

[0017] In the technical scheme of the embodiment of the application, the headlamp bracket one and the mounting frame are connected through the mounting hole.

[0018] In the technical scheme of the embodiment of the application, the cross section of the guide groove is square.

[0019] In the technical scheme of the embodiment of the application, the headlamp bracket one is located at the bottom end of the side face of the headlamp body, and the headlamp bracket one and the headlamp bracket two are staggered in height.

[0020] Compared with the prior art, the above technical scheme improves the front headlamp bracket, introduces the guide groove structure, can make the front headlamp bracket break at a specific position within the expected range when the vehicle is unfortunately collided with the pedestrian, thereby effectively reducing the damage to the legs of the pedestrian, when the vehicle is collided with the pedestrian, the guide groove can guide the bracket to break along the predetermined safe path, avoid the bracket to break in an irregular or dangerous way, thereby reducing the cutting or piercing injury to the legs of the pedestrian, at the same time, the X direction (i.e. the vehicle length direction) stiffness of the headlamp mounting bracket is adjusted, the stiffness of the bracket in the X direction is reduced by improving the structure of the bracket, so that the headlamp bracket can produce greater displacement during the collision, which helps to realize the breaking of the bracket during the collision, further protects the safety of the pedestrian, at the same time, the overall strength of the headlamp bracket is increased, the stability of the headlamp bracket in the non-collision state is ensured, and the scheme has the advantages of simple structure and easy implementation, the function of the guide groove and the adjustment of the stiffness of the bracket can be realized through simple structure and connection mode, without complex manufacturing process and high production cost.

[0021] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, in the attached drawings, the same reference numerals are used to denote the same components throughout the several views. In the drawings:

[0023] Figure 1 A front headlamp bracket structure based on pedestrian leg protection according to the specific embodiment;

[0024] Figure 2 A front headlamp bracket based on pedestrian leg protection according to the specific embodiment Figure 1 Enlarged view of A in the middle;

[0025] Figure 3 A front headlamp bracket based on pedestrian leg protection according to the specific embodiment Figure 1 Enlarged view of B in the middle;

[0026] Figure 4 Mounting bracket structure according to the specific embodiment;

[0027] Figure 5 MCL comparison chart according to the specific embodiment simulation and test.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1. Headlamp main body; 2. Headlamp bracket one; 3. Headlamp bracket two; 4. Induction groove; 5. Hole site; 6. Mounting bracket; 7. Mounting hole. DETAILED DESCRIPTION

[0030] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a use of the plural and vice versa.

[0032] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0033] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments, and is not necessarily used consistently throughout. It will be explicitly understood by one of ordinary skill in the art that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0035] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0036] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as limiting the embodiments of the present application, which do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0037] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] Please refer to Figures 1 to 5 The embodiment of the present application is a front headlamp bracket based on pedestrian leg protection, comprising:

[0039] A headlamp body 1;

[0040] A headlamp bracket one 2 is located on the side of the headlamp body 1;

[0041] A headlamp bracket two 3 is located at the top end of the headlamp body 1;

[0042] An induction groove 4 is provided on the surface of the headlamp bracket one 2 and the headlamp bracket two 3, wherein a hole site 5 is provided in the induction groove 4 on the surface of the headlamp bracket one 2;

[0043] A mounting bracket 6 is provided for connecting the headlamp bracket one 2 and the headlamp body 1;

[0044] A mounting hole 7 is provided on the surface of the mounting bracket 6.

[0045] The headlamp bracket one 2 and the headlamp bracket two 3 can be made of metal materials, such as aluminum alloy or steel, to ensure their strength and durability.

[0046] The induction groove 4 can be designed in V shape or U shape, so that the pedestrian's leg can pass smoothly in the collision, and the headlamp bracket can be more effectively guided to break, thereby reducing the damage to the pedestrian's leg.

[0047] The hole site 5 can be provided in the induction groove 4 on the surface of the headlamp bracket one 2, which is used for mounting other accessories and improves the space utilization and provides convenience for mounting other accessories.

[0048] The mounting bracket 6 can be made of plastic material to reduce the weight and cost. At the same time, the mounting hole 7 on the mounting bracket 6 can be designed in oval or other shapes to adapt to headlamp bodies 1 of different sizes.

[0049] During installation, first, the headlamp bracket one 2 and the headlamp bracket two 3 are respectively installed on the side and top end of the headlamp body 1, then, the mounting bracket 6 is fixed on the headlamp bracket one 2, and the headlamp body 1 is connected with the mounting bracket 6 through the mounting hole 7, finally, it is checked that all parts are firmly connected.

[0050] Please refer to Figures 1 to 5 , the distance between the induction groove 4 on the surface of the headlamp bracket one 2 and the left end face is 43mm, which ensures the accurate and known position of the induction groove 4 on the headlamp bracket one 2, and helps to achieve the expected fracture effect in the event of a collision, thereby protecting the safety of pedestrians.

[0051] Please refer to Figures 1 to 5 , the size of the induction groove 4 on the surface of the headlamp bracket one 2 is 48.1mm*4.9mm*6.0mm, considering the strength and toughness of the bracket, so that the induction groove 4 can guide the bracket to break when subjected to a large enough impact force, while maintaining sufficient structural integrity to support the weight of the headlamp and impact in daily use.

[0052] Please refer to Figures 1 to 5 , the size of the hole site 5 in the induction groove 4 on the surface of the headlamp bracket one 2 is 7.5mm*4.1mm, mainly to balance the strength, toughness and fracture characteristics of the bracket to meet specific safety requirements.

[0053] Overall, by accurately setting and adjusting the position and size of the induction groove on the surface of the headlamp bracket, the effective reduction of pedestrian leg injury in vehicle collision is achieved, while the stability and reliability of the headlamp bracket in daily use are also ensured.

[0054] Please refer to Figures 1 to 5 , the distance between the induction groove 4 on the surface of the headlamp bracket two 3 and the upper end face is 32mm, and the size of the induction groove 4 on the surface of the headlamp bracket two 3 is 34.6mm*3.3mm*4.4mm.

[0055] Please refer to Figures 1 to 5 , the headlamp bracket one 2 and the mounting bracket 6 are connected through the mounting hole 7 by bolts, which not only ensures the stability of the structure, but also facilitates the later maintenance and replacement. In order to ensure sufficient strength and stability when the vehicle collides, high-strength steel bolts or stainless steel bolts can be used to fix them, both of which have excellent mechanical properties, such as high tensile strength, good corrosion resistance and other characteristics, to ensure sufficient strength and stability in the event of a collision, while facilitating later maintenance and replacement. During installation, appropriate washers or other auxiliary tools can be used to help distribute pressure, further improving the safety of the overall structure.

[0056] Please refer to Figures 1 to 5 , the lamp bracket is located at the bottom end of the side of the headlamp body 1, which helps to optimize the structural layout of the headlamp and improve the rigidity of the overall structure. By arranging the lamp bracket one 2 at the bottom of the headlamp body 1, the impact force from the ground or collision can be effectively dispersed, thereby protecting the headlamp from damage and reducing unnecessary space occupation. The lamp bracket one 2 and the lamp bracket two 3 are staggered in height, which helps to optimize the structural layout of the headlamp and improve the rigidity of the overall structure. By placing the two brackets at different heights, when subjected to external force, they can support each other and disperse the pressure, reducing stress concentration on a single support point. This staggered height can also be adjusted according to actual needs to achieve the best state.

[0057] Please refer to Figures 1 to 5 , the induction groove 4 structure is added. When the vehicle is unfortunately involved in a collision with a pedestrian, the headlamp bracket can be induced to break within the expected position, i.e. by precisely controlling the position and manner of the breaking point, the headlamp bracket can break along the preset path under the action of a large enough impact force, thereby significantly reducing the damage to the pedestrian's leg. The induction groove 4 can guide the bracket to break in a predetermined direction, which not only absorbs part of the impact energy and reduces the force directly acting on the pedestrian, but also ensures that the broken part remains connected, thereby preventing it from becoming a flying object and further ensuring the safety of the surrounding environment. At the same time, the X-direction (i.e. the vehicle length direction) stiffness of the headlamp mounting bracket is adjusted to allow greater displacement during the collision process, with the purpose of achieving better energy absorption effect in the entire front area. When a frontal collision occurs, the headlamp bracket will allow greater deformation to consume more kinetic energy, thereby enhancing the vehicle's own protection capability and providing certain protection effect to pedestrians.

[0058] By using HyperMesh and LS-DYN joint simulation, a CAE model is established, and a standard lower leg impactor is used for simulation. The displacement of the headlamp mounting point is increased from 3.3mm to 6.2mm; and the slot between the lamp bracket one 2 and the lamp bracket two 3 is set to fail, and the test verification (as shown in Figure 5 ) shows that the lamp bracket one 2 and the lamp bracket two 3 break, and the impactor ligament elongation MCL is 16mm, which meets the national standard requirement that MCL must be less than 22mm.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pedestrian leg protection based headlamp support characterized by, Comprising: a headlamp body; a headlamp bracket one, located at the side of the headlamp body; a headlamp bracket two, located at the top end of the headlamp body; an induction groove, opened on the surface of the headlamp bracket one and the headlamp bracket two, wherein a hole site is opened in the induction groove on the surface of the headlamp bracket one; a mounting bracket, connecting the headlamp bracket one and the headlamp body through the mounting bracket; a mounting hole, opened on the surface of the mounting bracket.

2. The pedestrian leg protection based headlamp support of claim 1, wherein, The distance between the induction groove opened on the surface of the headlamp bracket one and the left end surface is 43mm.

3. The pedestrian leg protection based headlamp support of claim 2, wherein, The size of the induction groove opened on the surface of the headlamp bracket one is 48.1mm*4.9mm*6.0mm.

4. The pedestrian leg protection based headlamp support of claim 3, wherein, The size of the hole site opened in the induction groove on the surface of the headlamp bracket one is 7.5mm*4.1mm.

5. A pedestrian leg protection based headlamp support as claimed in claim 4, wherein, The distance between the induction groove opened on the surface of the headlamp bracket two and the upper end surface is 32mm, and the size of the induction groove opened on the surface of the headlamp bracket two is 34.6mm*3.3mm*4.4mm.

6. A pedestrian leg protection based headlamp support according to claim 5, characterized in that The headlamp bracket one and the mounting bracket are connected through the mounting hole by a bolt.

7. A pedestrian leg protection based headlamp support according to claim 6, characterized in that The headlamp bracket one is located at the bottom end of the side of the headlamp body, and the headlamp bracket one and the headlamp bracket two are staggered in height.

8. The pedestrian leg protection based headlamp support of claim 1, wherein, The cross section of the induction groove is square.

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