CN215663678U - Automobile floor boundary beam middle section assembly and assembly auxiliary frame - Google Patents
Automobile floor boundary beam middle section assembly and assembly auxiliary frame Download PDFInfo
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- CN215663678U CN215663678U CN202121480341.5U CN202121480341U CN215663678U CN 215663678 U CN215663678 U CN 215663678U CN 202121480341 U CN202121480341 U CN 202121480341U CN 215663678 U CN215663678 U CN 215663678U
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Abstract
The utility model discloses an automobile floor boundary beam middle section assembly which comprises at least 1 projection welding stud and a plurality of projection welding nuts; the projection welding stud is positioned on the auxiliary frame mounting surface of the rear floor edge beam middle section 1 assembly, and the plurality of projection welding nuts are positioned on the other mounting surface; and the projection welding stud is matched with the mounting hole at the corresponding position of the auxiliary frame in a positioning way. Before the assembly, the rear auxiliary frame longitudinal arm is guided and positioned through the projection welding stud, and the nut stud sequence is optimized, so that the problem that the nut is slipped due to positioning when the bolt is directly driven is solved. The nut and bolt are fixed after positioning, and meanwhile, the assembly efficiency can be improved. Through the optimization, the problem of nut sliding in the assembling process is thoroughly avoided, the repair rate is reduced, the cost is reduced, and the running quality of the whole vehicle is improved. Meanwhile, the auxiliary frame bracket can be assembled in the assembly mode through the positioning of the studs of the vehicle body, so that the development positioning mechanism can be reduced, and the tooling cost is saved.
Description
Technical Field
The utility model relates to the technical field of automobile bodies, in particular to an automobile floor boundary beam middle section assembly and an assembly auxiliary frame.
Background
Along with market to car travelling comfort and reliability requirement are higher and higher, need constantly promote the precision of automobile body for satisfying the market requirement, optimize the mounting means, guarantee the production beat simultaneously, thereby promote the travelling comfort, the car is in assembly shop assembling process, back sub vehicle frame installation is a complicated process, to automobile body installation nut pipe position degree, installation face plane degree tolerance requirement is the highest, bolt moment of torsion requirement is the highest, and it increases the degree of difficulty to the workman assembly to install at high station, easily produce the assembly difficulty in the production assembling process, quality problems such as nut smooth tooth, so avoid this type of problem if flow into the back process, reduce and reprocess, guarantee whole car quality of traveling.
As shown in fig. 1, fig. 1 shows a schematic structural diagram of an automobile floor boundary beam middle section assembly, which is formed by welding a rear floor boundary beam middle section 1, a rear trailing arm mounting reinforcing plate 2 and four projection welding nuts 3. In the installation process of the auxiliary frame of the automobile body, the problem of nut sliding is easy to occur, and the positioning precision is difficult to meet the requirement of assembly precision.
On the premise of ensuring that the position degree of a mounting nut of an auxiliary frame of an automobile body and the flatness of a mounting surface meet the tolerance requirement, the problem of difficulty in assembling a nut sliding tooth generated in the assembling process of a longitudinal arm of the auxiliary frame needs to be solved, and the method needs to be developed from the direction of optimization of a tool or structural design.
Disclosure of Invention
The utility model aims to solve the technical problems of how to improve the mounting and positioning accuracy of the auxiliary frame and reduce the repair rate.
The utility model solves the technical problems through the following technical means:
the automobile floor edge beam middle section assembly comprises at least 1 projection welding stud (4) and a plurality of projection welding nuts (3); the projection welding studs (4) are positioned on the auxiliary frame mounting surface of the rear floor edge beam middle section 1 assembly, and the plurality of projection welding nuts (3) are positioned on the other mounting surface; and the projection welding stud (4) is matched with the mounting hole at the corresponding position of the auxiliary frame in a positioning way.
Before the assembly, the rear auxiliary frame longitudinal arm is guided and positioned through the projection welding stud, and the nut stud sequence is optimized, so that the problem that the nut is slipped due to positioning when the bolt is directly driven is solved. The nut and bolt are fixed after positioning, and meanwhile, the assembly efficiency can be improved. Through the optimization, the problem of nut sliding in the assembling process is thoroughly avoided, the repair rate is reduced, the cost is reduced, and the running quality of the whole vehicle is improved. Meanwhile, the auxiliary frame bracket can be assembled in the assembly mode through the positioning of the studs of the vehicle body, so that the development positioning mechanism can be reduced, and the tooling cost is saved.
Furthermore, the number of the projection welding studs (4) is 2, so that the positioning effect is better.
Further, the rear floor comprises a rear floor boundary beam middle section (1) and a rear auxiliary frame longitudinal arm installation reinforcing plate (2); and the rear auxiliary frame longitudinal arm installation reinforcing plate (2) is fixed on the middle section of the floor boundary beam and is at the same side with the projection welding nut (3).
Furthermore, at least one projection welding stud (4) and one projection welding nut (3) are fixed on the rear auxiliary frame longitudinal arm installation reinforcing plate (2).
Furthermore, mounting holes for the projection welding studs (4) to pass through are formed in the middle section (1) of the side beam of the rear floor and the longitudinal arm mounting reinforcing plate (2) of the rear auxiliary frame; and the projection welding stud (4) penetrates through the mounting hole and is welded and fixed in the mounting hole.
The utility model also provides an assembly auxiliary frame, which comprises a rear auxiliary frame assembly (5), a vehicle body rear floor assembly (6) and the floor boundary beam middle section assembly; the floor boundary beam middle section assembly is fixed on a vehicle body rear floor assembly (6), the rear auxiliary frame assembly (5) is provided with positioning holes corresponding to the number and the positions of the projection welding studs (4), and the auxiliary frame assembly (5) is positioned on the vehicle body rear floor assembly (6) through the matching of the positioning holes and the projection welding studs (4).
The utility model has the advantages that:
before the assembly, the rear auxiliary frame longitudinal arm is guided and positioned through the projection welding stud, and the nut stud sequence is optimized, so that the problem that the nut is slipped due to positioning when the bolt is directly driven is solved. The nut and bolt are fixed after positioning, and meanwhile, the assembly efficiency can be improved. Through the optimization, the problem of nut sliding in the assembling process is thoroughly avoided, the repair rate is reduced, the cost is reduced, and the running quality of the whole vehicle is improved. Meanwhile, the auxiliary frame bracket can be assembled in the assembly mode through the positioning of the studs of the vehicle body, so that the development positioning mechanism can be reduced, and the tooling cost is saved.
Drawings
FIG. 1 is a schematic structural view of a vehicle floor side beam middle section assembly according to the background art of the present invention;
FIG. 2 is a schematic structural view of a middle section assembly of a side beam of an automobile floor according to embodiment 1 of the present invention;
FIG. 3 is an enlarged view of part A of FIG. 2;
FIG. 4 is a schematic structural view of the final sub-frame according to embodiment 2 of the present invention;
fig. 5 is an enlarged schematic view of a portion B in fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 2, the embodiment discloses an automobile floor boundary beam middle section assembly, which comprises a rear floor boundary beam middle section 1, a rear subframe longitudinal arm installation reinforcing plate 2, at least 1 projection welding stud 4 and a plurality of projection welding nuts 3; and a rear auxiliary frame longitudinal arm installation reinforcing plate 2 is fixed on the rear floor boundary beam middle section 1. In this embodiment, at least one projection welding stud 4 and one projection welding nut 3 are fixed on the trailing arm mounting reinforcing plate 2 of the rear subframe. As shown in fig. 2, the projection welding stud 4 is positioned on the sub-frame mounting surface of the rear floor edge beam middle section 1 assembly, and the plurality of projection welding nuts 3 are positioned on the other mounting surface; the rear auxiliary frame longitudinal arm installation reinforcing plate 2 is arranged at the same side as the projection welding nut 3.
And the projection welding stud 4 is matched with the mounting hole at the corresponding position of the auxiliary frame in a positioning way. For better positioning, the number of the stud bolts 4 is 2 in the present embodiment. The positions of the projection stud 4 and the projection nut 3 may be different depending on the vehicle type.
In this embodiment, the fixing structure of the projection welding stud 4 is specifically: mounting holes for the projection welding studs 4 to pass through are formed in the middle section 1 of the edge beam of the rear floor and the longitudinal arm mounting reinforcing plate 2 of the rear auxiliary frame; the projection welding stud 4 passes through the mounting hole and is welded and fixed in the mounting hole.
Preceding earlier will back sub vehicle frame longitudinal arm carry out the guiding orientation through projection welding double-screw bolt 4, and the location causes the smooth tooth problem of nut when rethread nut double-screw bolt 4 order is directly beaten through the bolt. The nut and bolt are fixed after positioning, and meanwhile, the assembly efficiency can be improved. Through the optimization, the problem of nut sliding in the assembling process is thoroughly avoided, the repair rate is reduced, the cost is reduced, and the running quality of the whole vehicle is improved. Meanwhile, the auxiliary frame bracket can be assembled to reduce the development positioning mechanism through the positioning of the vehicle body stud 4, so that the tool cost is saved
Example 2
By applying the floor boundary beam middle section assembly of embodiment 1, the embodiment discloses an assembly subframe, which comprises a rear subframe assembly 5, a vehicle body rear floor assembly 6 and the floor boundary beam middle section assembly in embodiment 1; the floor edge beam middle section assembly is fixed on a vehicle body rear floor assembly 6, the rear auxiliary frame assembly 5 is provided with positioning holes corresponding to the number and the positions of the projection welding studs 4, and the auxiliary frame assembly 5 is positioned on the vehicle body rear floor assembly 6 through the matching of the positioning holes and the projection welding studs 4.
As shown in fig. 4, the rear sub-frame assembly 5 is bolted to the vehicle body rear floor assembly 6 by nuts and bolts, and fig. 5 is a partially enlarged view of the rear sub-frame rear trailing arm assembly in the B portion of fig. 4. The assembly 1 of the rear floor boundary beam middle section is welded to the rear floor boundary beam 6-1 and then is assembled and welded to the rear floor assembly 6 of the vehicle body, the white vehicle body reaches a final assembly floor chain high station after coating electrophoresis, and the rear sub-frame assembly 55 is assembled after the floor chain of the final assembly workshop begins to be assembled. The rear auxiliary frame longitudinal arm mounting surface 5-1 penetrates through the two positioning studs 4 through the two positioning through holes 5-1-1 and 5-1-2, and the rear auxiliary frame longitudinal arm is positioned on the vehicle body. Then, two nuts of 7-1 and 7-2 are connected with the two projection welding studs 4 through a torque wrench in sequence, and two bolts of 8-1 and 8-2 are connected with the two projection welding nuts 3 through the torque wrench.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The automobile floor side beam middle section assembly is characterized by comprising at least 1 projection welding stud (4) and a plurality of projection welding nuts (3); the projection welding studs (4) are positioned on the auxiliary frame mounting surface of the rear floor edge beam middle section (1) assembly, and the plurality of projection welding nuts (3) are positioned on the other mounting surface; and the projection welding stud (4) is matched with the mounting hole at the corresponding position of the auxiliary frame in a positioning way.
2. The vehicle floor sill mid-section assembly of claim 1 wherein there are 2 projection studs (4).
3. The automobile floor side beam middle section assembly according to claim 1 or 2, characterized by comprising a rear floor side beam middle section (1) and a rear sub-frame longitudinal arm installation reinforcing plate (2); and the rear auxiliary frame longitudinal arm installation reinforcing plate (2) is fixed on the middle section of the floor boundary beam and is at the same side with the projection welding nut (3).
4. The vehicle floor side sill mid-section assembly of claim 3 wherein at least one projection weld stud (4), one projection weld nut (3) is affixed to the rear sub frame trailing arm mounting stiffener (2).
5. The automobile floor side beam middle section assembly according to claim 4, characterized in that mounting holes for projection welding studs (4) to pass through are formed in the rear floor side beam middle section (1) and the rear subframe longitudinal arm mounting reinforcing plate (2); and the projection welding stud (4) penetrates through the mounting hole and is welded and fixed in the mounting hole.
6. A final assembly sub-frame comprising a rear sub-frame assembly (5), a vehicle body rear floor assembly (6), a floor side rail mid-section assembly according to any one of claims 1 to 5; the floor boundary beam middle section assembly is fixed on a vehicle body rear floor assembly (6), the rear auxiliary frame assembly (5) is provided with positioning holes corresponding to the number and the positions of the projection welding studs (4), and the auxiliary frame assembly (5) is positioned on the vehicle body rear floor assembly (6) through the matching of the positioning holes and the projection welding studs (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480341.5U CN215663678U (en) | 2021-06-29 | 2021-06-29 | Automobile floor boundary beam middle section assembly and assembly auxiliary frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480341.5U CN215663678U (en) | 2021-06-29 | 2021-06-29 | Automobile floor boundary beam middle section assembly and assembly auxiliary frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215663678U true CN215663678U (en) | 2022-01-28 |
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ID=79978049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121480341.5U Active CN215663678U (en) | 2021-06-29 | 2021-06-29 | Automobile floor boundary beam middle section assembly and assembly auxiliary frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215663678U (en) |
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2021
- 2021-06-29 CN CN202121480341.5U patent/CN215663678U/en active Active
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