Front plate structure and assembly method

Abstract

The application relates to a front end plate structure, which comprises a cabin side beam, a front end plate, a mounting plate and a first fastening assembly, the front end plate is fixedly connected to the front side of the cabin side beam, the front end plate comprises a first front side plate and a first inner side plate connected to the inner side edge of the first front side plate through a front edge, the first inner side plate is provided with a first mounting hole, the mounting plate comprises a second front side plate and a second inner side plate connected to the inner side edge of the second front side plate through a front side edge, the second front side plate is provided with a first X-direction positioning surface, a Z-direction positioning hole and a front end frame mounting point, the second inner side plate is provided with a second mounting hole and a Y-direction positioning surface facing the inner side, and the first fastening assembly is matched with the first mounting hole and the second mounting hole to fixedly connect the mounting plate to the front end plate. The application further provides an assembling method. The application reduces the control difficulty of the DTS precision of the hood and the front bumper, and helps to reduce the possibility of problems of the gap and the surface difference between the hood and the front bumper.

Description

Technical Field

[0001] This invention relates to automobiles, and more specifically to a front-end panel structure and assembly method. Background Technology

[0002] In existing technology, front-end plates are fixedly connected to the front ends of the two engine compartment side beams of a car. The front frame of the car is fixedly connected to the two front-end plates, and the front bumper of the car is fixedly connected to the front frame. The front-end plates are usually sheet metal parts and are fixedly connected to the engine compartment side beams by welding. For example, the novel electric vehicle engine compartment side beam structure and vehicle proposed in patent application CN201822151196.0 adopts a scheme of welding front-end plates to the front ends of the engine compartment side beams. Due to the influence of the structure of the front-end plates and the connection method between the front-end plates and the engine compartment side beams, it is difficult to achieve the precision of the front-end plates, and the relative position between the front-end plates and the car's hood is difficult to guarantee, which easily leads to problems with the gap and surface difference between the hood and the front bumper. Summary of the Invention

[0003] The purpose of this invention is to provide a front panel structure and assembly method to reduce the possibility of problems arising from gaps and surface differences between the hood and the front bumper.

[0004] The present invention discloses a front end plate structure, comprising a cabin side beam, a front end plate, a mounting plate, and a first fastening assembly. The front end plate is fixedly connected to the front side of the cabin side beam. The front end plate includes a first front side plate and a first inner side plate whose front edge is connected to the inner edge of the first front side plate. A first mounting hole is provided on the first inner side plate. The mounting plate includes a second front side plate and a second inner side plate whose front edge is connected to the inner edge of the second front side plate. A first X-direction positioning surface, a Z-direction positioning hole, and a front end frame mounting point are provided on the second front side plate. A second mounting hole and a Y-direction positioning surface are provided on the second inner side plate. The first fastening assembly cooperates with the first mounting hole and the second mounting hole to fix the mounting plate to the front end plate.

[0005] Optionally, the front end plate is fixedly connected to the cabin side beam by welding.

[0006] Optionally, the second front side plate is provided with a plurality of the first X-direction positioning surfaces, and the second inner side plate is provided with a plurality of the Y-direction positioning surfaces.

[0007] Optionally, the first inner side plate is provided with a plurality of first mounting holes, and the second inner side plate is provided with a plurality of second mounting holes corresponding to the plurality of first mounting holes respectively.

[0008] Optionally, the Z-axis positioning hole is a strip-shaped hole whose length extends in the left-right direction.

[0009] Optionally, the first X-axis positioning surface is disposed on the front side of the second front side plate, and the Y-axis positioning surface is disposed on the inward-facing surface of the second inner side plate.

[0010] Optionally, it also includes a positioning plate and a second fastening assembly. The first front side plate is provided with a third mounting hole, and the positioning plate is provided with a fourth mounting hole, a Y-direction and Z-direction positioning hole, a Y-direction positioning hole, and a second X-direction positioning surface facing the front. The second fastening assembly cooperates with the third mounting hole and the fourth mounting hole to fix the positioning plate to the front side of the first front side plate.

[0011] Optionally, the first front side plate is provided with a plurality of the third mounting holes, and the positioning plate is provided with a plurality of fourth mounting holes corresponding to the plurality of the third mounting holes respectively.

[0012] Optionally, the second X-axis positioning surface is disposed on the front side of the positioning plate.

[0013] The present invention also proposes an assembly method for assembling a vehicle, the vehicle including the front end panel structure described in any of the above claims, the assembly method comprising the following steps: Prepare mounting plates for the car body, the car hood, and the front panel structure, wherein the car body includes the engine compartment side beams and the front panel structure of the front panel structure; The front cover is positioned using the first assembly fixture, and then the front cover is assembled onto the vehicle body; The mounting plate is positioned using a second assembly fixture, and then the mounting plate is assembled onto the front end plate. The second assembly fixture and the first assembly fixture are the same set of fixtures, or the second assembly fixture and the first assembly fixture use the same positioning reference.

[0014] This invention reduces the difficulty of controlling the DTS accuracy of the hood and front bumper, and helps to reduce the possibility of problems with the gap and surface difference between the hood and front bumper. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the front-end board structure described in the specific implementation embodiment; Figure 2 This is a schematic diagram of the front-end board structure described in the specific implementation embodiment; Figure 3 This is a schematic diagram of the mounting plate described in the specific implementation embodiment; Figure 4 This is a schematic diagram of the positioning plate described in the specific implementation embodiment; Figure 5 This is a schematic diagram illustrating the fit between the hood and the front bumper as described in the specific implementation embodiment; Figure 6 This is an assembly diagram illustrating the assembly method described in the specific implementation embodiment; Figure 7 This is a schematic diagram of the assembly of the front-end framework described in a specific implementation.

[0016] Among them, 1-Navy side beam; 2-Front end plate; 3-Mounting plate; 4-Positioning plate; 5-Front end frame; 6-Hood; 7-Front bumper; 8-Clearance; 9-Body; 10-Hinge; 11-Fender; 201 - First front side panel; 202 - First inner side panel; 203 - First mounting hole; 204 - Third mounting hole; 205 - First clearance hole; 206 - Second clearance hole; 301 - Second front side panel; 302 - Second inner side panel; 303 - First X-direction positioning surface; 304 - Y-direction positioning surface; 305 - Z-direction positioning hole; 306 - Second mounting hole; 307 - Fifth mounting hole; 401 - Second X-direction positioning surface; 402 - Y-direction and Z-direction positioning holes; 403 - Y-direction positioning hole; 404 - Fourth mounting hole. Detailed Implementation

[0017] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0018] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0019] like Figures 1 to 3The front end plate structure shown includes a cabin side beam 1, a front end plate 2, a mounting plate 3, and a first fastening assembly. The front end plate 2 is fixedly connected to the front side of the cabin side beam 1. The front end plate 2 includes a first front side plate 201 and a first inner side plate 202 whose front edge is connected to the inner edge of the first front side plate 201. The first inner side plate 202 is provided with a first mounting hole 203. The mounting plate 3 includes a second front side plate 301 and a second inner side plate 302 whose front edge is connected to the inner edge of the second front side plate 301. The second front side plate 301 is provided with a first X-direction positioning surface 303, a Z-direction positioning hole 305, and a front end frame mounting point. The second inner side plate 302 is provided with a second mounting hole 306 and a Y-direction positioning surface 304. The first fastening assembly cooperates with the first mounting hole 203 and the second mounting hole 306 to fix the mounting plate 3 to the front end plate 2. By adopting the above technical solution, by adding a mounting plate 3 and reasonably setting the structure of the front plate 2 and the mounting plate 3, positioning surfaces and positioning holes that can cooperate with the tooling are set on the mounting plate 3, and the mounting plate 3 and the front plate 2 are fixedly connected by the first fastening component. During assembly, the tooling can be used to form a direct connection between the mounting plate 3 and the hood 6, shortening the dimensional chain of the front plate structure and the hood 6, reducing the difficulty of controlling the DTS accuracy of the hood 6 and the front bumper 7, and helping to reduce the possibility of gap and surface difference problems between the hood 6 and the front bumper 7.

[0020] In some embodiments, the front end plate 2 is fixedly connected to the cabin side beam 1 by welding. Using the above technical solution, by adding a mounting plate 3 and rationally configuring the structures of the front end plate 2 and the mounting plate 3, positioning surfaces and positioning holes that can cooperate with tooling are provided on the mounting plate 3, and the mounting plate 3 and the front end plate 2 are fixedly connected using a first fastening assembly. During assembly, the tooling can be used to directly connect the mounting plate 3 and the hood 6. Even if the front end plate 2 is fixedly connected to the cabin side beam 1 by welding, the gap and surface difference between the hood 6 and the front bumper 7 can still meet the requirements.

[0021] In some embodiments, in order to better position the mounting plate 3 during the assembly process, the second front side plate 301 is provided with a plurality of first X-direction positioning surfaces 303, and the second inner side plate 302 is provided with a plurality of Y-direction positioning surfaces 304.

[0022] In some embodiments, in order to achieve a stable connection between the mounting plate 3 and the front side plate, the first inner side plate 202 is provided with a plurality of first mounting holes 203, and the second inner side plate 302 is provided with a plurality of second mounting holes 306 corresponding to the plurality of first mounting holes 203 respectively.

[0023] In some embodiments, the Z-direction positioning hole 305 is a strip-shaped hole whose length extends in the left-right direction. Setting the Z-direction positioning hole 305 as a strip-shaped hole can reduce the difficulty of mating the Z-direction positioning hole 305 with the positioning pin.

[0024] In some embodiments, a first X-direction positioning surface 303 is disposed on the front side surface of the second front side plate 301, and a Y-direction positioning surface 304 is disposed on the inward-facing surface of the second inner side plate 302.

[0025] In some embodiments, such as Figures 1 to 4 As shown, the front panel structure also includes a positioning plate 4 and a second fastening assembly. The first front side panel 201 has a third mounting hole 204. The positioning plate 4 has a fourth mounting hole 404, Y-axis and Z-axis positioning holes 402, Y-axis positioning holes 403, and a second X-axis positioning surface 401 facing forward. The second fastening assembly cooperates with the third mounting hole 204 and the fourth mounting hole 404 to fix the positioning plate 4 to the front side of the first front side panel 201. Using the above technical solution, setting the positioning plate 4 can improve the installation accuracy of the front frame 5, helping to ensure that the gap and surface difference between the hood 6 and the front bumper 7 meet the requirements. The separate setting of the positioning plate 4 and the mounting plate 3 can reduce the manufacturing and assembly difficulty of the positioning plate 4 and the mounting plate 3, further ensuring that the gap and surface difference between the hood 6 and the front bumper 7 meet the requirements, and also contributing to the lightweighting of the vehicle. Furthermore, the structure of the front end plate 2 and the positioning plate 4 is reasonably designed. The positioning plate 4 is provided with positioning surfaces and positioning holes that can cooperate with the tooling. The positioning plate 4 and the front end plate 2 are fixedly connected by the second fastening component. During assembly, the tooling can be used to directly link the positioning plate 4 and the hood 6, shortening the dimensional chain of the front end plate structure and the hood 6, reducing the difficulty of controlling the DTS accuracy of the hood 6 and the front bumper 7, and helping to reduce the possibility of gap and surface difference problems between the hood 6 and the front bumper 7.

[0026] In some embodiments, in order to ensure a stable connection between the positioning plate 4 and the front end plate 2, the first front side plate 201 is provided with a plurality of third mounting holes 204, and the positioning plate 4 is provided with a plurality of fourth mounting holes 404 corresponding to the plurality of third mounting holes 204 respectively.

[0027] In some embodiments, the second X-direction positioning surface 401 is disposed on the front side of the positioning plate 4.

[0028] In some embodiments, the first fastening assembly includes a first bolt and a first nut. The first fastener consisting of the first bolt and the first nut enables a detachable connection between the mounting plate 3 and the front end plate 2, making the position of the mounting plate 3 easy to adjust. In a specific implementation, to ensure the positional accuracy of the mounting plate 3 after it is fixedly installed and to reduce the difficulty of adjusting the position of the mounting plate 3, the first mounting hole 203 and / or the second mounting hole 306 are clearance-fitted with the first bolt.

[0029] In some embodiments, the second fastening assembly includes a second bolt and a second nut. The second fastener, consisting of the first bolt and the first nut, enables a detachable connection between the positioning plate 4 and the front end plate 2, making the position of the positioning plate 4 easy to adjust. In specific implementations, to ensure the positional accuracy of the positioning plate 4 after fixed installation and to reduce the difficulty of position adjustment during assembly, the third mounting hole 204 and / or the fourth mounting hole 404 are clearance-fitted with the second bolt.

[0030] In some embodiments, the front end plate structure includes two engine compartment side beams 1, two front end plates 2, two mounting plates 3, and a positioning plate 4. The two front end plates 2 are respectively fixedly connected to the front ends of the two engine compartment side beams 1, the two mounting plates 3 are respectively fixedly connected to the two front end plates 2, and the positioning plate 4 is fixedly connected to one of the two front end plates 2. By using the above technical solution, the positioning accuracy of the front end frame 5 can be ensured by using a positioning plate 4 to position it. Using a positioning plate 4 also contributes to the lightweighting of the vehicle.

[0031] In some embodiments, the front frame mounting point is a fifth mounting hole 307 provided on the second front side plate 301. As a specific example, in order to achieve a stable installation of the front frame 5, two fifth mounting holes 307 are provided on the second front side plate 301.

[0032] In specific implementation, the front end plate 2 is provided with a first clearance hole 205 corresponding to the fifth mounting hole 307, and the front end plate 2 is provided with a second clearance hole 206 corresponding to the Y-direction and Z-direction positioning holes 402.

[0033] The present invention also proposes an assembly method for assembling a car, the car including the front end panel structure described in any of the above claims, the assembly method comprising the following steps: Prepare the car body 9, the car front cover and the mounting plate 3 of the front panel structure. The car body 9 includes the engine compartment side beam 1 and the front panel 2 of the front panel structure. The front cover is positioned using the first assembly fixture, and then the front cover is assembled onto the vehicle body 9. The mounting plate 3 is positioned using the second assembly fixture, and then the mounting plate 3 is fastened to the front end plate 2 using the first fastening assembly. The second assembly fixture and the first assembly fixture are the same set of fixtures, or the second assembly fixture and the first assembly fixture use the same positioning reference. In specific implementation, the same positioning reference can be a surface or hole on the upper longitudinal beam in the vehicle's engine compartment.

[0034] By adopting the above technical solution, the mounting plate 3 and the front cover can be associated using the same tooling or the same positioning reference tooling, which shortens the dimensional chain of the front panel structure and the cover 6, reduces the difficulty of controlling the DTS accuracy of the cover 6 and the front bumper 7, and helps to reduce the possibility of gap and surface difference problems between the cover 6 and the front bumper 7.

[0035] In some embodiments, the positioning plate 4 is included in the front panel structure. During assembly, the positioning plate 4 can be positioned using a second assembly tooling and then assembled onto the front panel 2 so that the positioning plate 4 and the housing 6 are associated, thereby shortening the dimensional chain between the front panel structure and the housing 6.

[0036] In practical implementation, the first assembly fixture can be a front hood positioning fixture already existing in the technology, and the second assembly fixture can be a front hood mounting fixture already existing in the technology, with positioning surfaces and positioning pins corresponding to the positioning surfaces and positioning holes on the mounting plate 3, and positioning surfaces and positioning pins corresponding to the positioning surfaces and positioning holes on the positioning plate 4. An example of a front hood positioning fixture in the prior art is the engine hood positioning fixture proposed in patent application number CN201810234067.X.

[0037] As a specific example, such as Figure 5 and Figure 6 As shown, the assembly method includes the following steps: assembling the hinge 10 onto the hood 6; positioning the hood 6 with the hinge 10 using a first assembly fixture, and assembling the hood 6 with the hinge 10 onto the body 9; positioning the mounting plate 3 and the positioning plate 4 using a second assembly fixture, and assembling the mounting plate 3 and the positioning plate 4 onto the body 9; assembling the fender 11 onto the body 9; assembling the front frame 5 onto the body 9; and assembling the front bumper 7 onto the body 9 and the front frame 5. Specifically, when assembling the mounting plate 3 and the positioning plate 4 onto the body 9, the mounting plate 3 is positioned on the second assembly fixture using a Y-direction positioning surface 304, a first X-direction positioning surface 303, and a Z-direction positioning hole 305. The positioning plate 4 is positioned using a second X-direction positioning surface 401, Y-direction and Z-direction positioning holes 402, and a Y-direction positioning hole 403. Then, the first bolt and the second bolt are used to fix the mounting plate 3 and the positioning plate 4 onto the front plate 2. Figure 7 As shown, when the front frame 5 is assembled onto the vehicle body 9, the front frame 5 is supported rearward on the first X-direction positioning surface 303. The front frame 5 is connected to the fifth mounting hole 307 of the mounting plate 3 by bolts, and engages with the Z-direction positioning hole 305 on the mounting plate 3 by Z-direction positioning pins, and engages with the Y-direction positioning hole 403 on the positioning plate 4 by Y-direction positioning pins.

[0038] As a preferred example, the fender 11 can be positioned by a third assembly fixture and then assembled onto the body 9. The third assembly fixture and the first assembly fixture use the same positioning reference or are the same set of fixtures.

[0039] Following the assembly method described above, mounting plate 3 and positioning plate 4 are directly connected to the front hood through the same tooling, shortening the dimensional chain and making the DTS (Device-to-Ship) accuracy of the hood 6 and front bumper 7 easier to control. For example... Figure 5 As shown, the aforementioned front panel structure and assembly method are particularly suitable for vehicles where the hood 6 and the front bumper 7 are flush-fitted. In such vehicles, the gap 8 between the hood 6 and the front bumper 7 is an upward-facing seam. The aforementioned front panel structure and assembly method can better control the gap and surface difference of the upward-facing seam between the hood 6 and the front bumper 7.

[0040] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A front-end board structure, characterized in that, The device includes a cabin side beam, a front end plate, a mounting plate, and a first fastening assembly. The front end plate is fixedly connected to the front side of the cabin side beam. The front end plate includes a first front side plate and a first inner side plate whose front edge is connected to the inner edge of the first front side plate. The first inner side plate is provided with a first mounting hole. The mounting plate includes a second front side plate and a second inner side plate whose front edge is connected to the inner edge of the second front side plate. The second front side plate is provided with a first X-direction positioning surface, a Z-direction positioning hole, and a front end frame mounting point. The second inner side plate is provided with a second mounting hole and a Y-direction positioning surface. The first fastening assembly cooperates with the first mounting hole and the second mounting hole to fix the mounting plate to the front end plate. The Y-axis positioning surface, the first X-axis positioning surface, and the Z-axis positioning hole can be fitted with the front cover mounting fixture. It also includes a positioning plate and a second fastening assembly. The first front side plate is provided with a third mounting hole. The positioning plate is provided with a fourth mounting hole, a Y-direction and Z-direction positioning hole, a Y-direction positioning hole and a second X-direction positioning surface facing the front. The second fastening assembly cooperates with the third mounting hole and the fourth mounting hole to fix the positioning plate to the front side of the first front side plate. The Z-axis positioning hole is a strip-shaped hole whose length extends in the left-right direction; The first front side plate is provided with a plurality of the third mounting holes, and the positioning plate is provided with a plurality of fourth mounting holes respectively corresponding to the plurality of the third mounting holes; The second X-axis positioning surface is disposed on the front side of the positioning plate; The positioning plate and the mounting plate are set separately.

2. The front-end board structure according to claim 1, characterized in that, The front end plate is fixedly connected to the cabin side beam by welding.

3. The front-end board structure according to claim 1, characterized in that, The second front side plate is provided with a plurality of first X-direction positioning surfaces, and the second inner side plate is provided with a plurality of said Y-direction positioning surfaces.

4. The front-end board structure according to claim 1, characterized in that, The first inner side plate is provided with a plurality of first mounting holes, and the second inner side plate is provided with a plurality of second mounting holes corresponding to the plurality of first mounting holes respectively.

5. The front-end board structure according to claim 1, characterized in that, The first X-axis positioning surface is disposed on the front side of the second front side plate, and the Y-axis positioning surface is disposed on the inward-facing surface of the second inner side plate.

6. An assembly method for assembling automobiles, characterized in that, The vehicle includes the front panel structure according to any one of claims 1-5, and the assembly method includes the following steps: Prepare mounting plates for the car body, the car hood, and the front panel structure, wherein the car body includes the engine compartment side beams and the front panel structure of the front panel structure; The front cover is positioned using the first assembly fixture, and then the front cover is assembled onto the vehicle body; The mounting plate is positioned using a second assembly fixture, and then the mounting plate is assembled onto the front end plate. The second assembly fixture and the first assembly fixture are the same set of fixtures, or the second assembly fixture and the first assembly fixture use the same positioning reference.

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