Flanging structure of thin-walled automobile bumper

Abstract

The utility model provides a thin-wall automobile bumper flanging structure which comprises a front bumper body and a front bumper mounting support, the front bumper body is connected with the front bumper mounting support in a clamping mode through a front bumper flanging, and a combined structure of the front bumper flanging and the top end of the front bumper body is in a shape like a Chinese character'ji '. According to the thin-wall automobile bumper flanging structure provided by the utility model, the combined structure of the front bumper flanging and the top end of the front bumper body is designed to be n-shaped, and the n-shaped structure is used for increasing the surface area of the front bumper flanging, so that the cooling speed of the front bumper flanging after injection molding is accelerated; therefore, the thickness of the front bumper flanging is increased, and the appearance quality is not influenced by appearance shrinkage marks; due to the fact that the thickness of the front bumper flanging is increased, the wall thickness of the front bumper body can be reduced to 2.5 mm, the weight of the bumper can be reduced by about 10-15%, and light weight of the bumper is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a flanging structure of a thin-walled automobile bumper. Background Technique

[0002] In recent years, with the rapid development of electric vehicles, the lightweight of the whole vehicle helps to improve the cruising range of the vehicle. As a relatively large exterior part, the lightweight design of the front bumper of the automobile has been paid more and more attention. The wall thickness of the traditional front bumper of the automobile is mostly designed at 3.0 mm, while the wall thickness of the lightweight front bumper is 2.2 - 2.5 mm, and the bumper is expected to reduce the weight by about 10 - 15%.

[0003] The wall thickness of the front bumper is closely related to the flanging strength of the front bumper. When the flanging strength of the front bumper is insufficient, it is necessary to increase the wall thickness of the front bumper body to improve the strength of the front bumper of the automobile; however, currently, the thickness of the bumper flanging generally cannot exceed 1 / 3 of the main wall thickness, otherwise there will be appearance shrink marks, affecting the appearance quality; therefore, currently, the thickness of the bumper flanging is generally designed to be about 0.8 mm, resulting in insufficient flanging strength of the bumper. In order to avoid loosening of the bumper, the wall thickness of the front bumper of the automobile is mostly designed at 3.0 mm. In view of this, the utility model provides a flanging structure of a thin-walled automobile bumper. Content of the Utility Model

[0004] The purpose of the utility model is to improve and innovate in view of the defects and problems in the background technique, and provide a flanging structure of a thin-walled automobile bumper, which can not only meet the appearance of the bumper without shrink marks, but also meet the flanging strength of the bumper, making the bumper lightweight.

[0005] A flanging structure of a thin-walled automobile bumper includes a front bumper body and a front bumper mounting bracket. The front bumper body is clamped with the front bumper mounting bracket through a front bumper flanging. The combined structure of the front bumper flanging and the top of the front bumper body is in a "J" shape. The front bumper flanging includes a first horizontal part, an inclined part and a second horizontal part. Both ends of the first horizontal part are respectively connected with the top of the front bumper body and the inclined part, and both ends of the inclined part are respectively connected with the first horizontal part and the second horizontal part.

[0006] Further, the thickness of the front bumper body is 2.5 mm.

[0007] Further, the thickness of the first horizontal part is 2.0 mm, the width of the lower surface of the first horizontal part is 2.4 mm, and the distance between the lower surface of the first horizontal part and the lower surface of the second horizontal part is 4.9 mm.

[0008] Further, a positioning groove is opened on the second horizontal part, and a positioning block adapted to the positioning groove is installed at the top of the front bumper mounting bracket.

[0009] A further solution is that a clamping groove is formed on the upper surface of the second horizontal part, a clamping block is installed at the top end of the front bumper mounting bracket, and the outer surface of the clamping block is in interference fit with the inner surface of the clamping groove.

[0010] A further solution is that a limiting block is installed at the top end of the front bumper mounting bracket. After the front bumper body is clamped to the front bumper mounting bracket through the front bumper flange, the limiting block abuts against the upper surface of the second horizontal part.

[0011] A further solution is that the front bumper body and the front bumper flange are integrally injection-molded, and the front bumper mounting bracket is injection-molded.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides a thin-walled automotive bumper flange structure. By designing the combined structure of the front bumper flange and the top end of the front bumper body in a "J" shape, the "J" shape structure increases the surface area of the front bumper flange, so that the cooling speed of the front bumper flange after injection molding is accelerated. Furthermore, even if the thickness of the front bumper flange increases, it will not cause appearance shrinkage marks and affect the appearance quality. Due to the increase in the thickness of the front bumper flange, the wall thickness of the front bumper body can be reduced to 2.5 mm, enabling the bumper to be lightened by about 10 - 15%, achieving the lightweight of the bumper. In addition, through the mutual cooperation of the clamping groove and the clamping block, it is convenient to quickly assemble the front bumper body and the front bumper mounting bracket together; the limiting block abuts against the front bumper flange, making the connection between the front bumper body and the front bumper mounting bracket stable and reliable. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a three-dimensional structure diagram of a thin-walled automotive bumper flange structure provided by an embodiment of the present utility model;

[0015] Figure 2 It is a sectional three-dimensional structure diagram of a thin-walled automotive bumper flange structure provided by an embodiment of the present utility model;

[0016] Figure 3 For the present utility model Figure 1 It is a partial enlarged structure diagram at position A in

[0017] Figure 4 For the present utility model Figure 2 It is a partial enlarged structure diagram at position B in

[0018] Reference numerals: front bumper body 1, front bumper mounting bracket 2, front bumper flanging 3, first horizontal part 31, inclined part 32, second horizontal part 33, limit block 4, card slot 5, card block 6, positioning slot 7, positioning block 8. Detailed implementation manners

[0019] In order to make the objectives, features and advantages of the present utility model more obvious and understandable, the following provides a detailed description of the specific implementation manners of the present utility model with reference to the accompanying drawings.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific implementation manners and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] Please refer to Figures 1-4 , the present utility model provides a thin-walled automotive bumper flanging structure, including a front bumper body 1 and a front bumper mounting bracket 2. The front bumper body 1 is snap-connected to the front bumper mounting bracket 2 through the front bumper flanging 3, and the front bumper mounting bracket 2 is installed on the front fender by bolts. The front bumper body 1 and the front bumper flanging 3 are integrally injection-molded, and the front bumper mounting bracket 2 is injection-molded. The front fender is prepared from sheet metal materials.

[0023] As Figure 4 shown, the combined structure of the front bumper flanging 3 and the top end of the front bumper body 1 is in a "J" shape. Specifically, the front bumper flanging 3 includes a first horizontal part 31, an inclined part 32 and a second horizontal part 33. The two ends of the first horizontal part 31 are respectively connected to the top end of the front bumper body 1 and the inclined part 32, and the two ends of the inclined part 32 are respectively connected to the first horizontal part 31 and the second horizontal part 33. It can be understood that compared with the prior art where the front bumper flanging 3 extends horizontally relative to the top end of the front bumper body 1, the "J" shape structure of the present utility model increases the surface area of the front bumper flanging 3, so that the cooling speed of the injection-molded front bumper flanging 3 is accelerated. Furthermore, even if the thickness of the front bumper flanging 3 increases, it will not cause appearance shrinkage marks to affect the appearance quality. Due to the increase in the thickness of the front bumper flanging 3, the wall thickness of the front bumper body 1 can be reduced to 2.5 mm, enabling the front bumper to be weight-reduced by about 10 - 15%, achieving the lightweight of the bumper.

[0024] In this embodiment, the thickness of the first horizontal portion 31 is 2.0 mm, the width of the lower surface of the first horizontal portion 31 is 2.4 mm, and the distance between the lower surface of the first horizontal portion 31 and the lower surface of the second horizontal portion 33 is 4.9 mm. The ratio of the width to the height of the "Ji"-shaped structure should not be less than 1 / 3 to prevent the mold from generating sharp steel and affecting the mold life.

[0025] A positioning groove 7 is formed in the second horizontal portion 33, and a positioning block 8 adapted to the positioning groove 7 is installed at the top end of the front bumper mounting bracket 2. A clamping groove 5 is formed in the upper surface of the second horizontal portion 33, and a clamping block 6 is installed at the top end of the front bumper mounting bracket 2. The outer surface of the clamping block 6 is in interference fit with the inner surface of the clamping groove 5. Through the mutual cooperation of the positioning groove 7 and the positioning block 8, it is convenient to determine the position of the front bumper flange 3 mounted on the front bumper mounting bracket 2; through the mutual cooperation of the clamping groove 5 and the clamping block 6, it is convenient to quickly assemble the front bumper flange 3 and the front bumper mounting bracket 2 together. Further, a limiting block 4 is installed at the top end of the front bumper mounting bracket 2. After the front bumper body 1 is clamped to the front bumper mounting bracket 2 through the front bumper flange 3, the limiting block 4 abuts against the upper surface of the second horizontal portion 33, so that the front bumper flange 3 is not easily separated from the front bumper mounting bracket 2, which is beneficial to the stable and reliable connection of the front bumper body 1 and the front bumper mounting bracket 2.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0028] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of them. The mention of "embodiments" in this text means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flanging structure for a thin-walled automotive bumper, characterized in that: It includes a front bumper body (1) and a front bumper mounting bracket (2). The front bumper body (1) is snap-connected to the front bumper mounting bracket (2) through a front bumper flange (3). The combined structure of the front bumper flange (3) and the top end of the front bumper body (1) is in a "Ji" shape. The front bumper flange (3) includes a first horizontal part (31), an inclined part (32), and a second horizontal part (33). Both ends of the first horizontal part (31) are respectively connected to the top end of the front bumper body (1) and the inclined part (32), and both ends of the inclined part (32) are respectively connected to the first horizontal part (31) and the second horizontal part (33).

2. The flanging structure of the thin-walled automotive bumper according to claim 1, wherein: The thickness of the front bumper body (1) is 2.5 mm.

3. A flanging structure of a thin-walled automotive bumper according to claim 1, characterized in that: The thickness of the first horizontal part (31) is 2.0 mm, the width of the lower surface of the first horizontal part (31) is 2.4 mm, and the lower surface of the first horizontal part (31) is 4.9 mm away from the lower surface of the second horizontal part (33).

4. A flanging structure of a thin-walled automotive bumper according to claim 1, characterized in that: A positioning groove (7) is formed on the second horizontal part (33), and a positioning block (8) adapted to the positioning groove (7) is installed at the top end of the front bumper mounting bracket (2).

5. A flanging structure for a thin-walled automotive bumper according to claim 1, characterized in that: A clamping groove (5) is formed on the upper surface of the second horizontal part (33), and a clamping block (6) is installed at the top end of the front bumper mounting bracket (2). The outer surface of the clamping block (6) is in interference fit with the inner surface of the clamping groove (5).

6. A flanging structure for a thin-walled automotive bumper according to claim 5, characterized in that: A limiting block (4) is installed at the top end of the front bumper mounting bracket (2). After the front bumper body (1) is snap-connected to the front bumper mounting bracket (2) through the front bumper flange (3), the limiting block (4) abuts against the upper surface of the second horizontal part (33).

7. A flanging structure for a thin-walled automotive bumper according to claim 1, characterized in that: The front bumper body (1) and the front bumper flange (3) are integrally injection-molded, and the front bumper mounting bracket (2) is injection-molded.

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