Bracket assembly and method of manufacturing the same

Abstract

A bracket assembly includes a main bracket assembly and a sub-bracket for welding to the main bracket assembly. The main bracket assembly includes a main bracket and a fastener fixed to the main bracket. The sub-bracket is used to be welded to the shell of a post-processing package. The main bracket and the sub-bracket are provided with mutually cooperating sliding structures. Before the main bracket and the sub-bracket are welded, the gap between the main bracket and the sub-bracket is adjusted by the sliding structure. In this arrangement, the sliding structure absorbs tolerances, thereby improving the product qualification rate. The present invention also relates to a manufacturing method for manufacturing a bracket assembly.

Description

Technical Field

[0001] The invention relates to a bracket assembly and a manufacturing method thereof, belonging to the technical field of engine exhaust post-processing packaging. Background Art

[0002] Typically, exhaust aftertreatment packages are mounted on vehicles via a bracket assembly. Conventional methods for mounting bracket assemblies involve first welding a main bracket to fasteners to form a main bracket assembly, then welding the main bracket assembly to a secondary bracket to form a bracket assembly, and finally welding the bracket assembly to the exhaust aftertreatment package housing. Because each welding stage introduces cumulative tolerances, conventional bracket assembly methods often result in cumulative tolerances exceeding the designed range, leading to product quality defects. Summary of the Invention

[0003] An object of the present invention is to provide a bracket assembly capable of adjusting the installation tolerance between a main bracket and a sub-bracket and a manufacturing method thereof.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a bracket assembly, which includes a main bracket assembly and a sub-bracket for welding with the main bracket assembly, the main bracket assembly includes a main bracket and a fastener fixed on the main bracket, the sub-bracket is used to be welded to the shell of the post-processing package, the main bracket and the sub-bracket are provided with a sliding structure that cooperates with each other, and before the main bracket and the sub-bracket are welded, the gap between the main bracket and the sub-bracket is adjusted by the sliding structure.

[0005] As a further improved technical solution of the present invention, the sliding structure includes protrusions and grooves that cooperate with each other.

[0006] As a further improved technical solution of the present invention, the protrusion is provided on the auxiliary bracket, and the groove is provided on the main bracket.

[0007] As a further improved technical solution of the present invention, the sub-bracket includes a first sub-bracket and a second sub-bracket arranged at intervals, wherein the first sub-bracket is provided with two first mating surfaces arranged opposite to each other, and the second sub-bracket includes two second mating surfaces arranged opposite to each other; the main bracket includes a first groove mating with the first mating surface and a second groove mating with the second mating surface, and the sliding structure includes the first mating surface, the second mating surface, the first groove and the second groove.

[0008] As a further improved technical solution of the present invention, the two first mating surfaces are parallel to each other, and the two second mating surfaces are parallel to each other.

[0009] As a further improved technical solution of the present invention, the main bracket includes a first support part, a second support part and a mounting part connecting the first support part and the second support part, wherein the fastener is fixed on the mounting part, and the first groove and the second groove are respectively arranged on the first support part and the second support part.

[0010] The present invention also relates to a method for manufacturing the aforementioned bracket assembly, the method comprising the following steps:

[0011] S1: welding the main bracket and fasteners together to form a main bracket assembly;

[0012] S2: Weld the sub-bracket to the shell of the post-processing package;

[0013] S3: Installing the main bracket assembly on the auxiliary bracket, and adjusting the gap between the main bracket and the auxiliary bracket through the sliding structure so that the main bracket reaches a suitable installation position;

[0014] S4: Welding and fixing the main bracket and the auxiliary bracket.

[0015] As a further improved technical solution of the present invention, in step S1, the main bracket and the fastener are fixed together by projection welding.

[0016] As a further improved technical solution of the present invention, in step S2, the sub-bracket is welded to the shell of the post-processing package by arc welding.

[0017] As a further improved technical solution of the present invention, in step S4, the main bracket and the auxiliary bracket are fixed by arc welding.

[0018] Compared with the prior art, the gap between the main bracket and the auxiliary bracket of the present invention can be adjusted by a sliding structure before welding, thereby absorbing the tolerance and improving the qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the bracket assembly of the present invention and the shell of the post-processing package being welded together.

[0020] Figure 2 yes Figure 1 A three-dimensional diagram from another angle.

[0021] Figure 3 yes Figure 1 main view.

[0022] Figure 4 yes Figure 1 Left view of .

[0023] Figure 5 yes Figure 1 Right view of .

[0024] Figure 6 yes Figure 1 Top view of . DETAILED DESCRIPTION

[0025] Please refer to Figures 1 to 6 As shown, the present invention discloses a bracket assembly 100, which includes a main bracket assembly 1 and a sub-bracket 2 for welding with the main bracket assembly 1, the main bracket assembly 1 includes a main bracket 3 and a fastener 4 fixed to the main bracket 3, the sub-bracket 2 is used to be welded to the shell 200 of the post-processing package, the main bracket 3 and the sub-bracket 2 are provided with a sliding structure that cooperates with each other, and before the main bracket 3 and the sub-bracket 2 are welded, the gap D between the main bracket 3 and the sub-bracket 2 (see Figure 3 As shown) is adjusted by the sliding structure.

[0026] The sliding structure includes a protrusion 5 and a groove 6 that cooperate with each other. Specifically, the protrusion 5 is provided on the auxiliary support 2, and the groove 6 is provided on the main support 3.

[0027] In the illustrated embodiment of the present invention, the sub-bracket 2 includes a first sub-bracket 21 and a second sub-bracket 22 that are spaced apart, wherein the first sub-bracket 21 is provided with two first mating surfaces 211 that are opposite to each other, and the second sub-bracket 22 includes two second mating surfaces 221 that are opposite to each other; the main bracket 3 includes a first groove 311 that cooperates with the first mating surface 211 and a second groove 321 that cooperates with the second mating surface 221, and the sliding structure includes the first mating surface 211, the second mating surface 221, the first groove 311 and the second groove 321.

[0028] The two first mating surfaces 211 are parallel to each other, and the two second mating surfaces 221 are parallel to each other. With this arrangement, the main bracket 3 can slide along the first mating surfaces 211 and the second mating surfaces 221 to absorb tolerance.

[0029] The main bracket 3 includes a first support portion 31, a second support portion 32, and a mounting portion 33 connecting the first support portion 31 and the second support portion 32, wherein the fastener 4 is fixed to the mounting portion 33, and the first groove 311 and the second groove 321 are respectively provided on the first support portion 31 and the second support portion 32. The mounting portion 33 is provided with an assembly surface 331. In the illustrated embodiment of the present invention, the fasteners 4 are two bolts. Of course, in other embodiments, the fasteners 4 can also be other forms of fixing elements. The fasteners 4 are used to mount the post-processing package to the vehicle through the bracket assembly 100.

[0030] In addition, the present invention also relates to a method for manufacturing the above-mentioned bracket assembly 100, the manufacturing method comprising the following steps:

[0031] S1: Welding the main bracket 3 and the fastener 4 together to form the main bracket assembly 1;

[0032] S2: Welding the sub-bracket 2 to the housing 200 of the post-processing package;

[0033] S3: Install the main bracket assembly 1 on the auxiliary bracket 2, and adjust the gap D between the main bracket 3 and the auxiliary bracket 2 through the sliding structure so that the main bracket 3 reaches a suitable installation position;

[0034] S4: Welding and fixing the main bracket 3 and the auxiliary bracket 2.

[0035] In one embodiment of the present invention, in step S1, the main bracket 3 and the fastener 4 are fixed together by projection welding. In step S2, the sub-bracket 2 is welded to the housing 200 of the post-processing package by arc welding. In step S4, the main bracket 3 and the sub-bracket 2 are welded and fixed by arc welding.

[0036] In an embodiment of the present invention, the main bracket 3 can be positioned and clamped individually on the assembly surface 331 as a whole on the welding tool. The sub-bracket 2, the shell 200 of the post-processing package and other parts can be positioned and clamped individually on the welding tool as another whole. When the main bracket 3 and the sub-bracket 2 are welded, the position accuracy of the final assembly surface 331 relative to the assembly reference system can be controlled by the accuracy of the welding tool. In the present invention, the gap D can be adjusted by the sliding structure, thereby effectively absorbing the tolerances and cumulative tolerances generated by the main bracket 3, the sub-bracket 2, the shell 200 of the post-processing package and other parts after processing, assembly, welding, etc.

[0037] Please refer to Figure 3As shown, the meaning of dimension A is: in the direction shown in the figure, the nominal height dimension of the sub-bracket 2 and the outer contour of the whole diameter area of the shell 200 of the post-processing package after assembly and welding;

[0038] Dimension B means: the nominal height of the main support 3 in the direction shown in the figure;

[0039] Dimension C means: in the direction shown in the figure, after the assembly and welding of the bracket assembly 100 are finally completed, the nominal height dimension of the assembly surface 331 relative to the assembly reference;

[0040] The meaning of dimension D is: in the direction shown in the figure, the nominal size of the reasonable gap designed to absorb the tolerance between the main bracket 3 and the auxiliary bracket 2;

[0041] The meanings of X1, X2, and X3 are: in the direction shown in the figure, they are the reasonable tolerances and cumulative tolerances generated by the various parts and components marked with dimensions A, B, and C during the processes of parts processing, component assembly and welding.

[0042] After the sub-bracket 2 is assembled and welded to the post-processing package housing 200, the tolerances of the sub-bracket 2, the post-processing package, and other components are accumulated in Dimension A, which is the origin of Tolerance X1. The dimensional tolerance of the post-processing package housing 200 is particularly significant throughout the entire diameter area, significantly contributing to Tolerance X1. The tolerance X2 of Dimension B of the main bracket 3 primarily stems from the equipment and mold accuracy of the stamping process, which is much smaller than that of welding. Therefore, the weld quality here is highly guaranteed.

[0043] Compared to the prior art, the present invention's main bracket 3 and auxiliary bracket 2 allow for adjustable clearance before welding via a sliding structure. This absorbs tolerances, reduces the impact of component tolerances and welding tolerances on the positional accuracy of assembly surface 331, improves product qualification rates, and facilitates automated welding. The present invention's design ensures both the required surface profile tolerance of assembly surface 331 and the weld stability and weld quality of bracket assembly 100.

[0044] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art. Although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art should understand that those skilled in the art can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A bracket assembly, characterized in that: The invention comprises a main bracket assembly and a sub-bracket for welding with the main bracket assembly, the main bracket assembly comprises a main bracket and a fastener fixed to the main bracket, the sub-bracket is used to be welded to the shell of the post-processing package, the main bracket and the sub-bracket are provided with a sliding structure that cooperates with each other, and before the main bracket and the sub-bracket are welded, the gap between the main bracket and the sub-bracket is adjusted by the sliding structure, the fastener is used to install the post-processing package to the vehicle through the bracket assembly, the sub-bracket comprises a first sub-bracket and a second sub-bracket arranged at intervals, wherein the first sub-bracket is provided with two first mating surfaces arranged opposite to each other, and the second The sub-bracket includes two second mating surfaces arranged opposite to each other; the main bracket includes a first groove mating with the first mating surface and a second groove mating with the second mating surface, and the sliding structure includes the first mating surface, the second mating surface, the first groove and the second groove; the main bracket includes a first support part, a second support part and a mounting part connecting the first support part and the second support part, wherein the fastener is fixed on the mounting part, and the first groove and the second groove are respectively arranged on the first support part and the second support part; the first sub-bracket and the second sub-bracket are arranged at intervals along the circumference of the shell of the post-processing package.

2. The bracket assembly according to claim 1, wherein: The sliding structure includes a protrusion and a groove that cooperate with each other.

3. The bracket assembly according to claim 2, wherein: The protrusion is arranged on the auxiliary bracket, and the groove is arranged on the main bracket.

4. The bracket assembly according to claim 1, wherein: The two first matching surfaces are parallel to each other, and the two second matching surfaces are parallel to each other.

5. A method for manufacturing the bracket assembly according to any one of claims 1 to 4, the method comprising the following steps: S1: welding the main bracket and fasteners together to form a main bracket assembly; S2: Weld the sub-bracket to the shell of the post-processing package; S3: Installing the main bracket assembly on the auxiliary bracket, and adjusting the gap between the main bracket and the auxiliary bracket through the sliding structure so that the main bracket reaches a suitable installation position; S4: Welding and fixing the main bracket and the auxiliary bracket.

6. The manufacturing method according to claim 5, wherein: In step S1 , the main bracket and the fastener are fixed together by projection welding.

7. The manufacturing method according to claim 5, wherein: In step S2, the sub-bracket is welded to the shell of the post-processing package by arc welding.

8. The manufacturing method according to claim 5, wherein: In step S4, the main bracket and the auxiliary bracket are fixed by arc welding.

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