Foamed aluminum filling piece for enhancing roof pressure strength of automobile

Abstract

The utility model discloses a foamed aluminum filling piece for enhancing automobile top pressure strength, which comprises a foamed aluminum filling block, a B column inner plate, a B column upper outer plate, a B column lower outer plate and resistance spot welding, the foamed aluminum filling block is of a T-shaped structure, a metal clamp is sleeved on the outer side of the foamed aluminum filling block, the metal clamp is installed in an installation groove in a clamping mode, and the resistance spot welding is arranged on the outer side of the metal clamp. The mounting groove is formed in the middle of the foamed aluminum filling block, and the limiting plates are attached to the left side and the right side of the foamed aluminum filling block correspondingly. According to the foamed aluminum filling piece for enhancing the top pressure strength of the automobile, due to the fact that the foamed aluminum filling blocks are light in weight, the overall dead weight of an automobile body cannot be greatly increased, meanwhile, cost is low, and compared with other strengthening schemes such as strengthening metal plates, the ratio of the strength improvement amount to the weight has remarkable advantages; the foamed aluminum material can be used in structures with cavities on automobile bodies, and can be popularized to be applied to the automobile bodies.

Description

TECHNICAL FIELD

[0001] The utility model relates to traffic safety related technical field, concretely is a kind of foamed aluminium filling piece of reinforcing car roof pressure intensity. BACKGROUND

[0002] In recent years, with the gradually increasing sales of new energy vehicles, people pay more and more attention to the safety of vehicles, and in 2024, the state promulgated the latest national standard of roof pressure intensity of passenger car, the new standard improves the requirement of roof pressure intensity of vehicle, and makes more detailed provisions for test method and protection part, promotes automobile manufacturers to improve the design of body structure, uses more advanced new material, and improves the overall safety performance of vehicle;

[0003] However, the common method to improve roof pressure intensity is to increase the wall thickness of stamping parts and add reinforcing ribs in the internal space, which has complex structure, increases the weight of vehicle body and improves the cost. Foamed aluminum is an excellent lightweight material with the characteristics of light weight, low density, large specific stiffness, large specific strength, corrosion resistance and the like. The application of this material in vehicle body can not only meet the new roof pressure intensity standard of vehicle, but also promote the rapid development of lightweight vehicle body. Therefore, the utility model provides a foamed aluminum filling piece for reinforcing the roof pressure intensity of vehicle to solve the above problems.

[0004] Therefore, the utility model provides a foamed aluminum filling piece for reinforcing the roof pressure intensity of vehicle to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a foamed aluminum filling piece for reinforcing the roof pressure intensity of vehicle to solve the problem that the common method to improve roof pressure intensity is to increase the wall thickness of stamping parts and add reinforcing ribs in the internal space, which has complex structure, increases the weight of vehicle body and improves the cost.

[0006] To achieve the above object, the utility model provides the following technical scheme: a foamed aluminum filling piece for reinforcing the roof pressure intensity of vehicle, which comprises a foamed aluminum filling block, a B column inner plate, a B column upper outer plate, a B column lower outer plate and a resistance spot welding.

[0007] The foamed aluminum filling block has a "T" shape structure.

[0008] Further comprising:

[0009] A metal clamp is provided on the outside of the foamed aluminum filling block, and the metal clamp is clamped and installed in the installation groove.

[0010] The installation groove is provided in the middle of the foamed aluminum filling block.

[0011] The limiting plate in the "L" type structure is respectively attached to the left and right sides of the foam aluminum filling block.

[0012] Preferably, the upper and lower ends of the middle of the foam aluminum filling block are provided with first weight reduction grooves, and the side of the foam aluminum filling block is provided with a second weight reduction groove.

[0013] Preferably, the first weight reduction groove and the second weight reduction groove are both electrophoretic liquid flow guide grooves.

[0014] Preferably, the upper end of the metal clamp is provided with a plurality of threaded holes at equal intervals.

[0015] Preferably, the side and the bottom of the limiting plate are both provided with through holes.

[0016] Preferably, the left and right sides of the foam aluminum filling block are both B column inner plates, and the upper end of the foam aluminum filling block is provided with a B column upper outer plate.

[0017] Preferably, the lower end of the foam aluminum filling block and the outer side of the B column upper outer plate are both B column lower outer plates, and the B column inner plate, the B column upper outer plate and the B column lower outer plate are provided with resistance spot welding.

[0018] Compared with the prior art, the foam aluminum filling piece for enhancing the roof pressure strength of the automobile has the advantages that at least one group of foam aluminum filling structures is arranged to greatly improve the roof pressure strength of the automobile body, the quality of the foam aluminum filling block is relatively light, the overall weight of the automobile body is not greatly increased, the cost is relatively low, the installation operation scheme is simple, and compared with other reinforcing schemes such as reinforcing sheet metal, the ratio of the strength improvement amount to the weight has a significant advantage, the foam aluminum filling piece can be used in the structure with a cavity on the automobile body, and the application of the foam aluminum material on the automobile body can be promoted.

[0019] 1. The foam aluminum filling block, the first weight reduction groove and the second weight reduction groove are arranged, the first weight reduction groove is arranged at the upper and lower ends of the foam aluminum filling block, the second weight reduction groove is arranged at the side of the foam aluminum filling block, the arrangement of the first weight reduction groove and the second weight reduction groove does not affect the subsequent process, and the first weight reduction groove and the second weight reduction groove also have a good weight reduction effect.

[0020] 2. The installation groove, the metal clamp and the limiting plate are arranged, the metal clamp is clamped in the installation groove, and the limiting plate is attached to the left and right ends of the foam aluminum filling block, and the positioning and connection between the limiting plate and the foam aluminum filling block and between the metal clamp and the foam aluminum filling block are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the utility model;

[0022] Figure 2 It is a whole structure schematic view of the foam aluminum filling block, the metal clamp and the limiting plate of the utility model.

[0023] Figure 3 It is the whole structure schematic view of metal clamp and threaded hole of the utility model;

[0024] Figure 4 It is the whole structure schematic view of limiting plate and through hole of the utility model;

[0025] Figure 5 It is the cut structure schematic view of the utility model.

[0026] In the drawing: 1, foam aluminum filling block; 2, installation groove; 3, first weight reduction groove; 4, second weight reduction groove; 5, metal clamp; 6, threaded hole; 7, limiting plate; 8, through hole; 9, B column inner plate; 10, B column upper outer plate; 11, B column lower outer plate; 12, resistance spot welding. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides the following technical scheme.

[0029] In order to solve the problems in the prior art, therefore the embodiment is through following technical scheme, a kind of foam aluminum filling piece of reinforcing automobile roof pressure intensity, be provided with foam aluminum filling block 1, installation groove 2, first weight reduction groove 3, second weight reduction groove 4, metal clamp 5, threaded hole 6, limiting plate 7, through hole 8, B column inner plate 9, B column upper outer plate 10, B column lower outer plate 11 and resistance spot welding 12, foam aluminum filling block 1 is "T" character structure, metal clamp 5 is set in the outside of foam aluminum filling block 1, and metal clamp 5 is installed in installation groove 2, installation groove 2 is set in the middle part of foam aluminum filling block 1, limiting plate 7 is respectively installed in the left and right sides of foam aluminum filling block 1, the upper and lower ends of the middle part of foam aluminum filling block 1 are all provided with first weight reduction groove 3, and the side of foam aluminum filling block 1 is provided with second weight reduction groove 4, first weight reduction groove 3 and second weight reduction groove 4 are all electrophoretic fluid flow guide grooves, the upper end of metal clamp 5 is provided with multiple threaded holes 6 at equal intervals, the side and bottom of limiting plate 7 are all provided with through hole 8, the left and right sides of foam aluminum filling block 1 are all B column inner plate 9, and the upper end of foam aluminum filling block 1 is provided with B column upper outer plate 10, the lower end of foam aluminum filling block 1 and the outside of B column upper outer plate 10 are all B column lower outer plate 11, and resistance spot welding 12 is arranged between B column inner plate 9, B column upper outer plate 10 and B column lower outer plate 11;

[0030] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, according to the internal cavity shape and size between the upper end of the B column inner and outer plate design out of shape foam aluminum filler 1, including the density of foam aluminum is selected 0.5 g / cm3, the size of the shape is consistent with the shape of the internal cavity of sheet metal parts, the surface size error is controlled within ± 0.5 mm, the shape of the foam aluminum filler 1 is similar to a "T" type, installed in the upper end of the automobile B column, the installation groove 2 is the metal installation groove 2 installation position of the foam aluminum filler 1, the groove width is 5 mm, the groove depth is 3 mm, the limiting plate 7 is preferentially installed with the foam aluminum filler 1, the first weight reduction groove 3 and the second weight reduction groove 4 are both electrophoretic fluid guide grooves, which do not affect the subsequent process after the installation of the foam aluminum filler 1, and at the same time play the effect of reducing the weight of the foam aluminum filler 1, the metal clamp 5 is a "L" type galvanized steel plate, two through holes 8 are provided on the metal clamp 5, and the metal clamp 5 is in close contact with the outer surface of the shaped foam aluminum part, the limiting plate 7 has a thickness of 3 mm, is installed in the installation groove 2, and has three threaded holes 6 on the back, is connected with the B column sheet metal part through screws, and plays the role of installation, fixation and positioning.

[0031] The installation sequence of the scheme is as follows:

[0032] First, install the limiting plate 7 in the installation groove 2 of the foam aluminum filler 1, install the metal clamp 5 on the limiting position of the B column sheet metal inner plate through bolts and nuts or spot welding according to the design, so as to facilitate the installation of the foam aluminum filler 1; then coat the side of the shaped foam aluminum part with glue, install it on the B column sheet metal inner plate according to the position of the metal clamp 5, the outer surface of the foam aluminum part contacts with the metal clamp 5, and the metal installation groove 2 is connected with the sheet metal inner plate through screws; finally, coat the other side of the foam aluminum part with glue, install the outer plate of the B column sheet metal part and other parts, and the installation work of the shaped foam aluminum part is completed.

[0033] At the same time, the embodiment adopts CAE simulation means to verify, according to the boundary conditions and loading conditions of the automobile roof pressing test, a CAE simulation model is established to verify the filling effect, the simulation result shows that the reinforcing part at the upper end of the B column is replaced by the cold stamping reinforcing part, the filling structure of the foam aluminum material can greatly improve the roof pressing strength of the vehicle body. The roof pressing strength of the body-in-white reaches the limit under the stamping sheet metal scheme, and the application of the foam aluminum part improves about 6KN, and the weight of the foam aluminum part is only 350g, the strength improvement amount is higher than that of the stamping sheet metal scheme, the connection mode of the special-shaped foam aluminum part and other sheet metal parts of the vehicle body in the scheme is adhesion, we test the tensile strength of the interface strength according to the test method of GB / T 7124-2008 / ISO 4587:2003, and the result is qualified. After test verification, the interface adhesive strength is strong, and the failure mode is all the fracture of the foam aluminum sample, which shows that the foam aluminum can meet the connection strength demand by connecting with the vehicle body through the structural adhesive, and the connection mode can avoid abnormal noise.

[0034] The foam aluminum filling block 1 is arranged on the upper vehicle body, including but not limited to A column, B column, C column and the like, due to different filling positions, the appearance shape of the foam aluminum filling block 1 is different, the structure of the foam filling block needs to be designed according to the specific shape, and an electrophoresis liquid flow guide groove is designed under the condition of ensuring the performance, which not only ensures that the vehicle body does not affect electrophoresis, but also has the effect of reducing weight, and the metal buckle is arranged in the mounting groove 2 of the special-shaped foam aluminum filling block 1, and the buckle is connected with the B column inner plate 9 by using a screw, which is one of the fixing devices of the special-shaped foam aluminum filling block 1, limits the degree of freedom, ensures firm installation, one end of the metal clamp 5 is in contact with the special-shaped foam aluminum filling block 1, and the other end is connected with the B column outer plate through a bolt, in addition, the special-shaped foam aluminum part can be used singly or in combination, the number of filling parts is set according to the required reinforcing position, and the connection mode of the special-shaped foam aluminum part and the vehicle body can adopt glue adhesion, mechanical connection, mounting bracket and the like.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A foamed aluminum filler for enhancing the roof strength of an automobile, comprising a foamed aluminum filler block (1), an inner panel of the B-pillar (9), an upper outer panel of the B-pillar (10), a lower outer panel of the B-pillar (11), and a resistance spot weld (12); The aluminum foam filler block (1) has a "T" shaped structure; Its features are, Also includes: Metal clip (5), the metal clip (5) is sleeved on the outside of the foam aluminum filler block (1), and the metal clip (5) is engaged in the mounting groove (2); The mounting groove (2) is located in the middle of the aluminum foam filling block (1); The limiting plate (7) has an "L" shaped structure and is respectively attached to the left and right sides of the foam aluminum filler block (1).

2. The aluminum foam filler for enhancing the compressive strength of automotive roofs according to claim 1, characterized in that: The foam aluminum filler block (1) has a first weight reduction groove (3) at both the upper and lower ends of the middle part, and a second weight reduction groove (4) is provided on the side of the foam aluminum filler block (1).

3. The aluminum foam filler for enhancing the compressive strength of automotive roofs according to claim 2, characterized in that: The first weight reduction tank (3) and the second weight reduction tank (4) are both electrophoresis liquid guide tanks.

4. The aluminum foam filler for enhancing the compressive strength of automotive roofs according to claim 1, characterized in that: The metal clip (5) has multiple threaded holes (6) at equal intervals on its upper end.

5. The aluminum foam filler for enhancing the compressive strength of automotive roofs according to claim 1, characterized in that: The limiting plate (7) has through holes (8) on its side and bottom.

6. The aluminum foam filler for enhancing the compressive strength of automotive roofs according to claim 1, characterized in that: The left and right sides of the foam aluminum filler block (1) are both B-pillar inner panels (9), and the upper end of the foam aluminum filler block (1) is provided with a B-pillar outer panel (10).

7. The aluminum foam filler for enhancing the compressive strength of automotive roofs according to claim 1, characterized in that: The lower end of the aluminum foam filler block (1) and the outer side of the upper outer plate (10) of the B-pillar are both lower outer plates (11) of the B-pillar. Resistance spot welding (12) is provided between the inner plate (9) of the B-pillar, the upper outer plate (10) of the B-pillar and the lower outer plate (11) of the B-pillar.

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