Grid buffering structure

Abstract

The invention discloses a grille buffer structure, which belongs to the technical field of automobile accessories and comprises a grille body, the grille body is mounted on a vehicle body through a connecting bracket, and the connecting bracket comprises an upper fixing structure, a middle fixing structure and a lower fixing structure which are sequentially arranged from top to bottom; the upper fixing structure comprises a flange and an upper connecting bracket, and the flange is fixedly connected with the upper connecting bracket through a bolt; the middle fixing structure comprises a clamping angle plate and a middle connecting support, and the clamping angle plate is embedded in the middle connecting support; the lower fixing structure comprises a clamping plate and a lower connecting support, and the clamping plate is embedded in the lower connecting support. According to the scheme, the upper fixing structure adopts a fixing mode to form better support, and the middle fixing structure and the lower fixing structure are both embedded structures, so that good collapse performance can be realized, the damage value can be reduced, and the mounting convenience degree during the test of the grating body can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile accessories, in particular to a grille buffer structure. Background Art

[0002] Pedestrian protection is a key verification item in vehicle passive safety. The grille area is a key component for pedestrian protection. Its structural rationality is of great help to the protection of pedestrians' legs. It not only affects the safety of pedestrians' legs, but also affects the product's structural design, environmental parts layout and other contents. It is a key verification item in the grille development process.

[0003] The front grille is a key front styling feature, and its appearance is usually defined by the shape. The current styling trend shows the characteristics of clear edges, varied shapes, and strong three-dimensional sense, resulting in a large step difference in the shape of the grille and front bumper area, which conflicts with the vertical and gentle shape concept pursued for pedestrian protection. This will cause considerable damage to the leg shape in the GB 24550 test or in the scene of a real car hitting a person. Therefore, how to quickly achieve pedestrian protection indicators and how to reduce the leg collision damage value through positive optimization of the product structure are also the key points of the grille product structure design.

[0004] The cross section of the grille shows a convex bottom and inward top trend. According to the pedestrian protection model, when the leg is impacted, the leg will deform greatly, which will cause a greater damage value to the leg. The grille is usually made of hard plastic, so the product itself will deform less when impacted.

[0005] In addition, the structural feasibility of the product is confirmed through simulation during the structural design stage, while the pedestrian protection test of GB 24550 requires actual vehicle testing. Usually, there is a certain error in the data between the simulation and the actual vehicle test. After the product mold is completed and mass production begins, how to optimize the actual vehicle test at the lowest cost and fastest response time also requires overall product planning to avoid changes that have too much impact on mold molding, life, and cost.

[0006] Based on the above, it is necessary to optimize the fixed structure of the product. By optimizing the connection structure between the grille and the body in white, corresponding buffer energy absorption structures and collision hard points can be made to achieve the goal of reducing the leg injury value. Summary of the invention

[0007] In order to solve the problems that the current grille has a small deformation amount due to impact, resulting in a large damage value, and the grille is complicated to install, the present invention provides a grille buffer structure.

[0008] The present invention is achieved through the following technical solutions: A grille buffer structure comprises a grille body, wherein the grille body is detachably mounted on a vehicle body through a connecting bracket, wherein the connecting bracket comprises an upper fixing structure, a middle fixing structure and a lower fixing structure which are sequentially arranged from top to bottom; The upper fixing structure is provided with at least two in the horizontal direction; the upper fixing structure comprises a flange connected to the grille body and an upper connecting bracket connected to the vehicle body, and the flange is fixedly connected to the upper connecting bracket by bolts; The central fixing structure is provided with at least two in the horizontal direction; the central fixing structure comprises a corner plate connected to the grille body and a central connecting bracket connected to the vehicle body, and the corner plate is embedded in the central connecting bracket; The lower fixing structure is provided with at least two in the horizontal direction; the lower fixing structure comprises a clamping plate connected to the grille body and a lower connecting bracket connected to the vehicle body, and the clamping plate is embedded in the lower connecting bracket.

[0009] In this case, the upper fixed structure is fixed in a better way to form a support, and the middle fixed structure and the lower fixed structure are both embedded structures, which can achieve good collapse performance, help reduce the damage value, and further help to improve the installation convenience when testing the grille body.

[0010] A further improvement of the present invention is that the lower connecting bracket includes a tongue-pressing structure and a lower bracket profile that are opposite to each other. The tongue-pressing structure and the lower bracket profile are connected to the vehicle body at the same end. The tongue-pressing structure is wavy in shape as a whole. The top surface of the clamping plate is provided with a groove-shaped notch that engages with the trough of the tongue-pressing structure. The wavy tongue-pressing structure can cooperate with the groove-shaped notch on the clamping plate to form a limit between the two components. When the grille body is impacted, the groove-shaped notch overcomes the resistance and extends to one side of the vehicle body.

[0011] A further improvement of the present invention is that the tongue pressing structure includes a first trough section, a first crest section, a second trough section, a second crest section, a third trough section and a third crest section extending toward one side of the vehicle body, and the distances from the first crest section, the second crest section and the third crest section to the profile of the lower bracket are H2, H3 and H4 respectively, and the lengths of H2, H3 and H4 are shortened successively. The lengths of H2, H3 and H4 are gradually shortened, which helps to overcome the resistance to be overcome by the clamping plate moving toward one side of the vehicle.

[0012] A further improvement of the present invention is that the end of the trough section facing away from the vehicle body is connected with an upwardly inclined guide arc 2. The guide arc 2 is used to guide the clamping plate to enter between the tongue pressing structure and the lower bracket profile.

[0013] A further improvement of the present invention is that the top surface of the above-mentioned clamping plate is provided with a clamping reinforcement rib, and two clamping reinforcement ribs are provided, and the spacing between the two clamping reinforcement ribs is equal to the width of the tongue-pressing structure. The two clamping reinforcement ribs can improve the structural strength of the clamping plate and cooperate with the tongue-pressing structure to prevent the tongue-pressing structure and the clamping plate from lateral displacement and loss of mutual support.

[0014] A further improvement of the present invention is that a guide rib is provided between the two clamping reinforcement ribs, the top surface of the guide rib faces one side of the grille body and is inclined upward. The guide rib can form a guide match with the second guide arc and can also improve the structural strength of the clamping plate.

[0015] A further improvement of the present invention is that the end of the middle connecting bracket facing away from the vehicle body is provided with a Z-shaped notch corresponding to the angle plate. The angle plate can enter the Z-shaped notch after being impacted to form a collapse avoidance.

[0016] A further improvement of the present invention is that the end of the Z-shaped notch facing away from the vehicle body is connected with an upwardly inclined guide arc 1. The guide arc 1 forms a matching guide for the angle plate.

[0017] A further improvement of the present invention is that the above-mentioned angle plate is provided with a reinforcing rib assembly, the reinforcing rib assembly includes an upper reinforcing rib and a lower reinforcing rib, the upper reinforcing rib is arranged on the top surface of the angle plate, and the lower reinforcing rib is arranged on the bottom surface of the angle plate; in the initial state, the distance between the free end of the angle plate and the inner end of the Z-shaped notch close to the vehicle body is H1, and the distance between the end of the lower reinforcing rib away from the grille body and the corresponding middle connecting bracket part is H1, and H1 is 3mm. When the grille body is impacted, the angle plate cooperates with the middle fixed structure to provide a 3mm collapse space for the grille body.

[0018] A further improvement of the present invention is that a round hole that can be matched with a bolt is provided on the flange, and a through hole that can correspond to the round hole is provided on the upper connecting bracket.

[0019] It can be seen from the above technical scheme that the beneficial effects of the present invention are: in this case, a better support is formed by a fixed manner through the upper fixed structure, and the middle fixed structure and the lower fixed structure are both embedded structures, which can achieve good collapse performance, help reduce the damage value, and further help to improve the installation convenience when testing the grille body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is an axial view of the buffer structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the upper and middle structures of the grille of the present invention.

[0023] Figure 3 It is a schematic diagram of the lower structure of the grille of the present invention.

[0024] Figure 4 It is a schematic diagram of the bracket fixing structure of the present invention.

[0025] Figure 5 It is a cross-sectional view of the upper fixed structure of the present invention.

[0026] Figure 6 It is a cross-sectional view of the fixing structure described in the present invention.

[0027] Figure 7 It is a cross-sectional view of the lower fixed structure of the present invention.

[0028] Figure 8 It is a schematic diagram of the lower leg type impactor of the present invention.

[0029] In the accompanying drawings: 1. grille body, 2. connecting bracket, 2-1. upper fixed structure, 2-2. middle fixed structure, 2-3. lower fixed structure, 3. flange, 4. round hole, 5. upper connecting bracket, 6. bolt, 7. leg-type impactor, 8. angle plate, 9. reinforcing rib assembly, 9-1. upper reinforcing rib, 9-2. lower reinforcing rib, 10. middle connecting bracket, 11. Z-shaped notch, 12. guide arc one, 14. snap-in plate, 15. groove-shaped notch, 16. snap-in reinforcing rib, 17. guide rib, 18. lower connecting bracket, 19. tongue pressing structure, 19-1. trough section one, 19-2. trough section two, 19-3. trough section three, 20. guide arc two, 21. lower bracket profile. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0031] like Figure 1-8As shown, the present invention discloses a grille buffer structure, including a grille body 1 made of ASA or ABS, the grille body 1 of this material has high hardness and better support. The grille body 1 is detachably mounted on the vehicle body in an inclined shape through a connecting bracket 2, and the grille body 1 is arranged to be away from the vehicle body and inclined downward.

[0032] The connecting bracket 2 includes an upper fixing structure 2-1, a middle fixing structure 2-2 and a lower fixing structure 2-3 which are arranged in sequence from top to bottom.

[0033] The upper fixing structure 2-1 is provided with four in the horizontal direction; the upper fixing structure 2-1 includes a flange 3 connected to the grille body 1 and an upper connecting bracket 5 connected to the vehicle body, and the flange 3 and the upper connecting bracket 5 are fixedly connected by bolts 6; a circular hole 4 that can be adapted to the bolt 6 is opened on the flange 3, and a through hole corresponding to the circular hole 4 is provided on the upper connecting bracket 5.

[0034] The central fixed structure 2-2 is provided with at least two in the horizontal direction; the central fixed structure 2-2 comprises a corner plate 8 connected to the grille body 1 and a central connecting bracket 10 connected to the vehicle body, the corner plate 8 is embedded in the central connecting bracket 10; the central connecting bracket 10 is provided with a Z-shaped notch 11 corresponding to the corner plate 8 at one end away from the vehicle body. The corner plate 8 can enter the Z-shaped notch 11 after being impacted to form a collapse avoidance.

[0035] The end of the Z-shaped notch 11 away from the vehicle body is connected with an upwardly inclined guide arc 12. The guide arc 12 forms a matching guide for the angle plate 8; the angle plate 8 is provided with a reinforcing rib assembly 9, and the reinforcing rib assembly 9 includes an upper reinforcing rib 9-1 and a lower reinforcing rib 9-2, the upper reinforcing rib 9-1 is arranged on the top surface of the angle plate 8, and the lower reinforcing rib 9-2 is arranged on the bottom surface of the angle plate 8; in the initial state, the distance between the free end of the angle plate 8 and the inner end of the Z-shaped notch 11 close to the vehicle body is H1, and the distance between the end of the lower reinforcing rib 9-2 away from the grille body 1 and the corresponding middle connecting bracket 10 is H1, and H1 is 3mm. When the grille body 1 is impacted, the angle plate 8 cooperates with the middle fixed structure 2-2 to provide a 3mm collapse space for the grille body 1.

[0036] The lower fixed structure 2-3 is provided with at least two in the horizontal direction; the lower fixed structure 2-3 includes a clamping plate 14 connected to the grille body 1 and a lower connecting bracket 18 connected to the vehicle body, and the clamping plate 14 is embedded in the lower connecting bracket 18. The lower connecting bracket 18 includes a tongue pressing structure 19 and a lower bracket profile 21 opposite to each other, and the same end of the tongue pressing structure 19 and the lower bracket profile 21 is connected to the vehicle body, and the tongue pressing structure 19 is wavy in shape as a whole; the top surface of the clamping plate 14 is provided with a groove-shaped notch 15 that engages with the trough of the tongue pressing structure 19. The wavy tongue pressing structure 19 can cooperate with the groove-shaped notch 15 on the clamping plate 14 to form a limit between the two components. When the grille body 1 is impacted, the groove-shaped notch 15 overcomes the resistance and extends to one side of the vehicle body. The end of the trough section 19-1 away from the vehicle body is connected to an upward inclined guide arc 20. The second guide arc 20 is used to guide the clamping plate 14 to enter between the tongue pressing structure 19 and the lower bracket profile 21; The top surface of the clamping plate 14 is provided with a clamping reinforcement rib 16, and two clamping reinforcement ribs 16 are provided, and the spacing between the two clamping reinforcement ribs 16 is equal to the width of the tongue pressing structure 19. The two clamping reinforcement ribs 16 can cooperate with the tongue pressing structure 19 while improving the structural strength of the clamping plate 14 to prevent the tongue pressing structure 19 and the clamping plate 14 from lateral displacement and loss of mutual support.

[0037] A guide rib 17 is further provided between the two clamping reinforcement ribs 16, and the top surface of the guide rib 17 faces one side of the grille body 1 and is inclined upward. The guide rib 17 can form a guiding match with the second guide arc 20 and can also improve the structural strength of the clamping plate 14.

[0038] The tongue pressing structure 19 includes a first trough section 19-1, a first crest section, a second trough section 19-2, a second crest section, a third trough section 19-3 and a third crest section extending toward one side of the vehicle body, and the distances from the first crest section, the second crest section and the third crest section to the lower bracket profile 21 are H2, H3 and H4 respectively, and the lengths of H2, H3 and H4 are shortened successively. The lengths of H2, H3 and H4 are gradually shortened, which helps to overcome the resistance to be overcome by the clamping plate 14 moving toward one side of the vehicle.

[0039] The length of the clamping plate 14 that can move toward the side of the vehicle body after being impacted is greater than 3 mm. This helps to form a safety protection of collapse when the grille body 1 is impacted, with the upper fixed structure 2-1 as a fixed fulcrum, and the lower part of the grille body 1 rotates toward the side of the vehicle body, thereby helping to reduce the damage value and the degree of damage to the grille body 1. In addition, this mounting structure can improve the convenience of loading the grille body 1 on the vehicle body.

[0040] The grille buffer structure described in the present invention forms a better support by fixing the upper fixed structure, wherein the middle fixed structure and the lower fixed structure are both embedded structures, which can achieve good collapse performance, help reduce the damage value, and further help improve the installation convenience when testing the grille body.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grille buffer structure, comprising a grille body (1), wherein the grille body (1) is detachably mounted on a vehicle body via a connecting bracket (2), and characterized in that: The connecting bracket (2) comprises an upper fixing structure (2-1), a middle fixing structure (2-2) and a lower fixing structure (2-3) which are arranged in sequence from top to bottom; the upper fixing structure (2-1) is provided with at least two in the horizontal direction; the upper fixing structure (2-1) comprises a flange (3) connected to the grille body (1) and an upper connecting bracket (5) connected to the vehicle body, the flange (3) and the upper connecting bracket (5) being fixedly connected by bolts (6); the middle fixing structure (2-2) is provided with at least The middle fixed structure (2-2) comprises a clamping plate (8) connected to the grille body (1) and a middle connecting bracket (10) connected to the vehicle body, and the clamping plate (8) is embedded in the middle connecting bracket (10); the lower fixed structure (2-3) is provided with at least two in the horizontal direction; the lower fixed structure (2-3) comprises a clamping plate (14) connected to the grille body (1) and a lower connecting bracket (18) connected to the vehicle body, and the clamping plate (14) is embedded in the lower connecting bracket (18).

2. A grid buffer structure according to claim 1, characterized in that: The lower connecting bracket (18) comprises a tongue-pressing structure (19) and a lower bracket profile (21) which are opposed to each other in the upper and lower directions. The tongue-pressing structure (19) and the lower bracket profile (21) are connected to the vehicle body at the same end. The tongue-pressing structure (19) is wavy in shape as a whole. The top surface of the clamping plate (14) is provided with a groove-shaped notch (15) which engages with the trough of the tongue-pressing structure (19).

3. A grid buffer structure according to claim 2, characterized in that: The tongue pressing structure (19) comprises a first trough section (19-1), a first crest section, a second trough section (19-2), a second crest section, a third trough section (19-3) and a third crest section extending toward one side of the vehicle body, wherein the distances between the first crest section, the second crest section and the third crest section and the lower bracket profile (21) are H2, H3 and H4 respectively, and the lengths of H2, H3 and H4 are shortened in sequence.

4. A grid buffer structure according to claim 3, characterized in that: An end of the first wave valley section (19-1) facing away from the vehicle body is connected to an upwardly inclined guide arc 2 (20).

5. A grid buffer structure according to any one of claims 2 to 4, characterized in that: A clamping reinforcement rib (16) is provided on the top surface of the clamping plate (14), two clamping reinforcement ribs (16) are provided, and the spacing between the two clamping reinforcement ribs (16) is equal to the width of the tongue pressing structure (19).

6. A grid buffer structure according to claim 5, characterized in that: A guide rib (17) is also provided between the two clamping reinforcement ribs (16), and the top surface of the guide rib (17) faces one side of the grille body (1) and is inclined upward.

7. A grid buffer structure according to any one of claims 2 to 4, characterized in that: The end of the middle connecting bracket (10) facing away from the vehicle body is provided with a Z-shaped notch (11) corresponding to the angle clamping plate (8).

8. The grid buffer structure according to claim 7, characterized in that: An end of the Z-shaped notch (11) facing away from the vehicle body is connected to an upwardly inclined guide arc (12).

9. The grid buffer structure according to claim 7, characterized in that: The corner plate (8) is provided with a reinforcing rib assembly (9), the reinforcing rib assembly (9) comprising an upper reinforcing rib (9-1) and a lower reinforcing rib (9-2), the upper reinforcing rib (9-1) being arranged on the top surface of the corner plate (8), and the lower reinforcing rib (9-2) being arranged on the bottom surface of the corner plate (8); in an initial state, the distance between the free end of the corner plate (8) and the inner end of the Z-shaped notch (11) close to the vehicle body is H1, and the distance between the end of the lower reinforcing rib (9-2) away from the grille body (1) and the corresponding middle connecting bracket (10) is H1, and H1 is 3 mm.

10. A grid buffer structure according to any one of claims 2 to 4, characterized in that: The flange (3) is provided with a circular hole (4) adapted to fit the bolt (6), and the upper connecting bracket (5) is provided with a through hole corresponding to the circular hole (4).

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