Embedded power suspension mounting structure and mounting method

Abstract

The invention discloses an embedded power suspension mounting structure and mounting method.The mounting structure comprises a front longitudinal beam body and a front longitudinal beam cover plate, a front longitudinal beam cavity is formed between the front longitudinal beam body and the front longitudinal beam cover plate, a through hole is formed in the side face of the front longitudinal beam body, and a power suspension is embedded into the front longitudinal beam cavity through the through hole; the front longitudinal beam cover plate is provided with a front suspension front partition plate, a front suspension rear partition plate and a suspension installation point sleeve to serve as suspension installation points, bolt holes are formed in the periphery of the through hole, and a power suspension is installed on the suspension installation points in the mode that bolts penetrate through the bolt holes. While the strength, rigidity and other performance of a suspension mounting point are guaranteed, the suspension is arranged in the longitudinal beam cavity, the space of the forecabin is fully utilized, and the problems that the arrangement space of the forecabin is insufficient, and consequently pedestrian protection buffer space is insufficient are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly relates to an embedded power mount installation structure and an installation method. Background Art

[0002] Due to the deep penetration of the concepts of energy conservation, emission reduction, low carbon and environmental protection, the automotive industry is transforming from traditional fuel vehicles to new energy vehicles such as electric vehicles. The development of new energy vehicles is booming. Among them, range-extended and plug-in hybrid new energy vehicles are loved by more and more people because they effectively solve the problem of range anxiety of pure electric vehicles. Such models in the market are becoming more and more popular among consumers, and major vehicle manufacturers are vigorously developing them. However, since two sets of power systems need to be integrally arranged in the front cabin, such models pose great challenges to the space layout of the front cabin, especially the compression of the body space, which puts forward higher requirements for the body structure design. How to reasonably and effectively optimize the body structure while meeting the various performance requirements of the vehicle has become a problem that every body engineer needs to deeply consider. In particular, the structural selection of the power mount installation points needs to be reasonably designed according to the actual layout to meet the requirements of the front cabin layout space and the vehicle performance.

[0003] Currently, most of the automotive powertrain mount installation structures are located on the upper surface of the front longitudinal beam, which cannot effectively utilize the front cabin space, resulting in difficulties in layout. Especially for range-extended and plug-in hybrid models, the front cabin needs to integrally arrange many components such as engines, motors, gearboxes, and electronic control systems. At the same time, the relatively high mount position is not conducive to the vibration stability during vehicle driving, reducing the durability performance and NVH performance of the whole vehicle. In addition, the relatively high layout position affects the layout space of the upper components in the front cabin, cannot provide sufficient buffer space for pedestrian protection, and increases the design difficulty of pedestrian protection. The existing power mount layout schemes can no longer meet the requirements of the front cabin space. Summary of the Invention

[0004] The purpose of the present invention is to provide an embedded power mount installation structure and an installation method, which while ensuring the performance such as strength and stiffness of the mount installation points, solve the problems of insufficient front cabin layout space and insufficient pedestrian protection buffer space caused thereby by arranging the mounts into the longitudinal beam cavities to make full use of the front cabin space.

[0005] In order to achieve the above purpose, the present invention is realized through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides an embedded power mount installation structure, including a front longitudinal beam body and a front longitudinal beam cover plate. A front longitudinal beam cavity is formed between the front longitudinal beam body and the front longitudinal beam cover plate. A through hole is provided on the side surface of the front longitudinal beam body, and the power mount is embedded into the front longitudinal beam cavity through the through hole. The front longitudinal beam cover plate is provided with a front mount front partition, a front mount rear partition, and a mount installation point sleeve as the mount installation points. Bolt holes are provided around the through hole, and the power mount is installed on the mount installation points through bolts passing through the bolt holes.

[0007] As a further technical solution, a front longitudinal beam front reinforcement plate is provided in the front longitudinal beam cavity between the front longitudinal beam body and the front longitudinal beam cover plate, and the front end of the front longitudinal beam front reinforcement plate fixes the front mount rear partition.

[0008] As a further technical solution, a counterbore surface is provided around the through hole on the front longitudinal beam body. The shape of the counterbore surface matches the shape of the power mount mounting seat, and the bolt holes are located on the counterbore surface.

[0009] As a further technical solution, the front mount front partition and the front mount rear partition are arranged oppositely, and nuts are fixed on both the front mount front partition and the front mount rear partition. The installation positions of the nuts correspond to the positions of the bolt holes on the front longitudinal beam body.

[0010] As a further technical solution, two mount installation point sleeves are provided. The two mount installation point sleeves are fixedly arranged on the front mount installation plate in parallel, and the inner surface of the mount installation point sleeve is provided with threads.

[0011] As a further technical solution, the front mount installation plate is fixed on the upper surface of the front longitudinal beam cover plate, and the positions of the mount installation point sleeves correspond to the positions of the bolt holes on the front longitudinal beam body.

[0012] As a further technical solution, the cross-section of the front longitudinal beam cover plate is in a U-shaped structure.

[0013] As a further technical solution, four bolt holes are provided, two of which are located above the through hole, and the other two bolt holes are located below the through hole.

[0014] As a further technical solution, the bolt holes correspond to the mount installation points on the front longitudinal beam cover plate one by one.

[0015] In a second aspect, an embodiment of the present invention provides an installation method for an embedded power mount installation structure, including the following steps:

[0016] First, weld the mount installation point sleeve to the front mount installation plate, and then weld the front mount installation plate to the upper surface of the front longitudinal beam cover plate;

[0017] Then weld the front suspension front partition into the inner cavity of the front longitudinal beam cover plate;

[0018] Then connect the front suspension rear partition and the front longitudinal beam front reinforcement plate by spot welding, and then weld them together into the inner cavity of the front longitudinal beam cover plate to form the front longitudinal beam cover plate assembly;

[0019] Finally, merge and weld the front longitudinal beam cover plate assembly and the front longitudinal beam body into the front longitudinal beam assembly;

[0020] The dynamic mount is embedded in the front longitudinal beam cavity within the front longitudinal beam assembly, and is installed at the mount installation points through bolts passing through the bolt holes, so as to fix the dynamic mount in an embedded manner on the front beam assembly.

[0021] The beneficial effects of the above embodiments of the present invention are as follows:

[0022] (1) The embedded dynamic mount installation structure provided by the present invention improves the traditional Z-direction installation of the mount on the upper surface of the front longitudinal beam to Y-direction installation on the inner surface of the front longitudinal beam by opening holes in the front part of the front longitudinal beam body and embedding the mount into the front longitudinal beam cavity, and opening holes on the inner side of the longitudinal beam to arrange the dynamic assembly mount in the longitudinal beam cavity. On the one hand, since the mount has a relatively large stiffness, the overlapping area between the mount and the front longitudinal beam does not participate in the deformation energy absorption processes such as collision bending and collapse. Arranging the mount in the longitudinal beam cavity does not affect the collision deformation mode and structural strength of the longitudinal beam, and has no impact on collision safety. On the other hand, it makes full use of the longitudinal beam cavity space, greatly saves the engine compartment layout space, optimizes enough buffer space for pedestrian head protection, and at the same time makes the engine compartment layout more compact and beautiful.

[0023] (2) The embedded dynamic mount installation structure provided by the present invention adds dynamic assembly mount through holes on the front longitudinal beam body, including 4 bolt through holes and one mount body through hole, embeds the mount into the longitudinal beam cavity, and tightly connects it in the Y direction with nuts or threaded pipes on the front longitudinal beam cover plate assembly through bolts; at the same time, installs the front suspension rear partition with mount installation points at the front end of the front longitudinal beam reinforcement plate, and uses the front longitudinal beam reinforcement plate to support the dynamic mount, so as to disperse the mount installation points on two components, namely the front longitudinal beam cover plate and the front longitudinal beam reinforcement plate, and avoid all mount installation points being located on the front longitudinal beam cover plate, resulting in deformation of the front longitudinal beam cover plate due to excessive force.

[0024] (3) The embedded power mount installation structure provided by the present invention sets the cross-section of the front longitudinal beam cover plate into a U-shaped structure, so that a front longitudinal beam cavity similar to a rectangle is formed after the front longitudinal beam cover plate and the front longitudinal beam body are assembled, providing sufficient space for the embedding of the power mount. At the same time, considering the strength problem of the front longitudinal beam assembly, a front longitudinal beam front reinforcement plate is arranged in the front longitudinal beam cavity between the front longitudinal beam body and the front longitudinal beam cover plate, and the front longitudinal beam cavity between the front longitudinal beam body and the front longitudinal beam cover plate is supported by the arranged front longitudinal beam reinforcement plate, improving the strength of the front longitudinal beam assembly.

[0025] (4) The installation method of the embedded power mount installation structure provided by the present invention is relatively simple. By opening holes on the front longitudinal beam body, the mount is embedded into the longitudinal beam cavity, and is fixedly connected to the front longitudinal beam assembly in the Y direction through bolts. Structures such as a front mount front partition, a front mount rear partition, a front mount installation plate, and a mount installation point sleeve are added in the longitudinal beam cavity and on the upper part of the longitudinal beam to provide installation points for the mount, thereby realizing the embedded installation structure of the mount. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The schematic drawings forming a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0027] Figure 1 is a schematic structural view of the front longitudinal beam assembly of the present invention;

[0028] Figure 2 is a schematic view of the disassembled front longitudinal beam assembly of the present invention;

[0029] Figure 3 is a partial view of the through hole of the front longitudinal beam assembly of the present invention;

[0030] Figure 4 is Figure 3 the sectional view at A-A in;

[0031] Figure 5 is Figure 3 the sectional view at B-B in;

[0032] Figure 6 is a three-dimensional view of the power mount installed on the front longitudinal beam assembly of the present invention;

[0033] Figure 7 is the front elevation view of the power mount installed on the front longitudinal beam assembly of the present invention;

[0034] Figure 8 is Figure 7 the sectional view at C-C in.

[0035] The schematic drawings are only for illustration;

[0036] Among them, 1. Front longitudinal beam assembly; 2. Front longitudinal beam body; 201. Through hole; 202. Bolt hole; 203. Counterbore surface; 3. Front longitudinal beam cover plate; 4. Front suspension front partition; 5. Front suspension rear partition; 6. Front suspension mounting plate; 7. Mounting point sleeve for suspension; 8. Front longitudinal beam front reinforcement plate; 9. Power suspension; 10. Bolt; 11. Front longitudinal beam cavity. Specific implementation manner

[0037] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0038] Embodiment 1

[0039] In a typical implementation manner of the present invention, as Figures 1-8 shown, an embedded power suspension mounting structure is provided, including a front longitudinal beam body 2 and a front longitudinal beam cover plate 3. A front longitudinal beam cavity 11 is formed between the front longitudinal beam body 2 and the front longitudinal beam cover plate 3. A through hole 201 is opened on the side surface of the front longitudinal beam body. The power suspension 9 is embedded into the front longitudinal beam cavity 11 through the through hole 201. The front suspension front partition 4, the front suspension rear partition 5 and the mounting point sleeve 7 for suspension are provided on the front longitudinal beam cover plate 3 as suspension mounting points. Bolt holes 202 are provided around the through hole 201. The power suspension 9 is installed on the suspension mounting points through bolts 10 passing through the bolt holes.

[0040] The mounting structure provided in this embodiment improves the traditional Z - direction mounting of the suspension on the upper surface of the front longitudinal beam to Y - direction mounting on the inner surface of the front longitudinal beam by opening a hole in the front part of the front longitudinal beam body and embedding the power suspension into the front longitudinal beam cavity. By opening a hole on the inner side of the longitudinal beam and arranging the power assembly suspension in the longitudinal beam cavity, while ensuring the strength, stiffness and other performance of the suspension mounting points, by arranging the suspension in the longitudinal beam cavity, the front cabin space is fully utilized, and the problems of insufficient front cabin layout space and insufficient pedestrian protection buffer space caused thereby are solved.

[0041] In order to ensure the strength of the suspension mounting points and the strength of the entire front longitudinal beam assembly, a front longitudinal beam front reinforcement plate 8 is arranged in the front longitudinal beam cavity 11 between the front longitudinal beam body 2 and the front longitudinal beam cover plate 3. The front end of the front longitudinal beam front reinforcement plate 8 fixes the front suspension rear partition 5. By arranging the front longitudinal beam reinforcement plate to support the front longitudinal beam cavity 11 between the front longitudinal beam body 2 and the front longitudinal beam cover plate 3, the strength of the front longitudinal beam assembly is improved. At the same time, the front suspension rear partition 5 with suspension mounting points is installed at the front end of the front longitudinal beam reinforcement plate 8, and the power suspension is supported by the front longitudinal beam reinforcement plate 8, avoiding all suspension mounting points being located on the front longitudinal beam cover plate, resulting in deformation of the front longitudinal beam cover plate due to excessive force.

[0042] In this embodiment, a sunken table surface 203 is provided around the through hole on the front longitudinal beam body 2. The shape of the sunken table surface 203 matches the shape of the dynamic mount mounting seat, and the bolt hole 202 is located on the sunken table surface. Four bolt holes 202 are provided, two of which are located above the through hole 201, and the other two bolt holes are located below the through hole 201. The bolt holes correspond to the mount mounting points on the front longitudinal beam cover plate one by one. Specifically, the two bolt holes above the through hole correspond to the mount mounting points on the two mount mounting point sleeves 7, and the two bolt holes below the through hole correspond to the mount mounting points on the front mount front partition 4 and the front mount front partition 5 respectively. When installing the dynamic mount through the provided sunken table surface, placing the dynamic mount base at the sunken table surface can achieve the one-to-one correspondence between the bolt holes on the dynamic mount and the bolt holes on the front longitudinal beam assembly 1, realize the rapid positioning of the bolt holes, and improve the installation efficiency of the dynamic mount.

[0043] In this embodiment, the front mount front partition 4 and the front mount rear partition 5 are arranged oppositely and are respectively located on both sides of the through hole 201 to avoid affecting the insertion of the dynamic mount. Nuts are fixed on both the front mount front partition 4 and the front mount rear partition 5, and the installation positions of the nuts correspond to the positions of the bolt holes on the front longitudinal beam body. When installing the dynamic mount, bolts sequentially pass through the bolt holes on the dynamic mount, the bolt holes on the front longitudinal beam body 1, and the nuts on the front mount front partition 4 and the front mount rear partition 5 to fix the dynamic mount.

[0044] In this embodiment, two mount mounting point sleeves 7 are provided, and the two mount mounting point sleeves 7 are fixedly arranged on the front mount mounting plate 6 in parallel. Threads are provided on the inner surface of the mount mounting point sleeve 7. Further, the front mount mounting plate 6 is fixed on the upper surface of the front longitudinal beam cover plate 3, and the positions of the mount mounting point sleeves 7 correspond to the positions of the bolt holes on the front longitudinal beam body. Bolts sequentially pass through the bolt holes on the dynamic mount, the bolt holes on the front longitudinal beam body 1, and the mount mounting point sleeves 7 to fix the dynamic mount.

[0045] As Figures 3-5 shown, the cross-section of the front longitudinal beam cover plate 3 is in a U-shaped structure, so that after the front longitudinal beam cover plate 3 and the front longitudinal beam body 2 are assembled, a front longitudinal beam cavity 11 similar to a rectangle is formed, providing sufficient space for the embedding of the dynamic mount. Since the dynamic mount has a large stiffness, the overlapping area between the dynamic mount and the front longitudinal beam does not participate in the deformation energy absorption processes such as collision bending and collapse. Placing the mount in the longitudinal beam cavity does not affect the collision deformation mode and structural strength of the longitudinal beam and has no impact on collision safety.

[0046] The embedded power mount installation structure provided in this embodiment includes a front longitudinal beam body 2 and a front longitudinal beam cover assembly. Power assembly mount through holes are added to the front longitudinal beam body 2, including 4 bolt through holes and a mount body through hole. The mount is embedded into the front longitudinal beam cavity 11 and is fixedly connected in the Y direction by bolts to nuts or threaded pipes on the front longitudinal beam cover assembly. The front longitudinal beam cover assembly includes: a front longitudinal beam cover 3, a front mount front partition 4, a front mount rear partition 5, a front longitudinal beam front reinforcement plate 8, a front mount mounting plate 6, a mount mounting point sleeve 7, etc. Welding nuts are provided on the front mount front partition 4 and the front mount rear partition 5, which are vertically arranged in the U-shaped cavity of the front longitudinal beam cover and are spot welded to the upper and lower surfaces of the front longitudinal beam cover 3 and the front longitudinal beam front reinforcement plate 8 respectively to provide two lower mounting points for the mount. The front mount mounting plate 6 and the mount mounting point sleeve 7 are connected together by CO2 shielded arc welding and are spot welded to the upper surface of the front longitudinal beam cover 3 to provide two upper mounting points for the mount. The front longitudinal beam body 2 and the front longitudinal beam cover assembly are combined and spot welded together to form a front longitudinal beam assembly 1. After the mount is installed, as Figures 6-8 shown.

[0047] Embodiment 2

[0048] In a typical implementation manner of the present invention, an installation method for an embedded power mount installation structure is provided, including the following steps:

[0049] First, weld the mount mounting point sleeve to the front mount mounting plate, and then weld the front mount mounting plate to the upper surface of the front longitudinal beam cover;

[0050] Then, weld the front mount front partition to the inner cavity of the front longitudinal beam cover;

[0051] Next, connect the front mount rear partition and the front longitudinal beam front reinforcement plate by spot welding and then weld them together to the inner cavity of the front longitudinal beam cover to form a front longitudinal beam cover assembly;

[0052] Finally, combine and weld the front longitudinal beam cover assembly and the front longitudinal beam body into a front longitudinal beam assembly;

[0053] The power mount is embedded in the front longitudinal beam cavity within the front longitudinal beam assembly and is installed on the mount mounting points by bolts passing through the bolt holes, so as to fix the power mount in an embedded manner on the front beam assembly.

[0054] The installation method provided in this embodiment realizes the embedded installation structure of the mount by opening holes on the front longitudinal beam body, embedding the mount into the longitudinal beam cavity, fixedly connecting in the Y direction by bolts to the front longitudinal beam assembly, and adding structures such as a front mount front partition, a front mount rear partition, a front mount mounting plate, and a mount mounting point sleeve in the longitudinal beam cavity and on the upper part of the longitudinal beam to provide mounting points for the mount.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An embedded power suspension installation structure, characterized in that: It includes a front longitudinal beam body and a front longitudinal beam cover plate, a front longitudinal beam cavity is formed between the front longitudinal beam body and the front longitudinal beam cover plate, a through hole is provided on the side of the front longitudinal beam body, and the power suspension is embedded in the front longitudinal beam cavity through the through hole; the front longitudinal beam cover plate is provided with a front suspension front bulkhead, a front suspension rear bulkhead and a suspension mounting point sleeve as a suspension mounting point, bolt holes are provided around the through hole, and the power suspension is installed on the suspension mounting point by bolts passing through the bolt holes.

2. The embedded power suspension installation structure according to claim 1, characterized in that: A front longitudinal beam front reinforcement plate is arranged in the front longitudinal beam cavity between the front longitudinal beam body and the front longitudinal beam cover plate, and a front suspension rear bulkhead is fixed to the front end of the front longitudinal beam front reinforcement plate.

3. The embedded power suspension installation structure according to claim 1, characterized in that: A sunken surface is arranged around the through hole on the front longitudinal beam body, the shape of the sunken surface matches the shape of the power suspension mounting seat, and the bolt hole is located on the sunken surface.

4. The embedded power suspension installation structure according to claim 1, characterized in that: The front suspension front bulkhead and the front suspension rear bulkhead are arranged opposite to each other, and nuts are fixed on the front suspension front bulkhead and the front suspension rear bulkhead, and the installation positions of the nuts correspond to the positions of the bolt holes on the front longitudinal beam body.

5. The embedded power suspension installation structure according to claim 1, characterized in that: There are two suspension installation point sleeves, which are fixed in parallel on the front suspension installation plate, and the inner surfaces of the suspension installation point sleeves are provided with threads.

6. The embedded power suspension installation structure according to claim 5, characterized in that: The front suspension mounting plate is fixed to the upper surface of the front longitudinal beam cover plate, and the position of the suspension mounting point sleeve corresponds to the position of the bolt hole on the front longitudinal beam body.

7. The embedded power suspension installation structure according to claim 1, characterized in that: The cross section of the front longitudinal beam cover plate is a U-shaped structure.

8. The embedded power suspension installation structure according to claim 1, characterized in that: There are four bolt holes, two of which are located above the through hole, and the other two are located below the through hole.

9. The embedded power suspension installation structure according to claim 8, characterized in that: The bolt holes correspond one-to-one to the suspension mounting points on the front longitudinal beam cover plate.

10. A method for installing an embedded power suspension installation structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: First, the suspension mounting point sleeve is welded to the front suspension mounting plate, and then the front suspension mounting plate is welded to the upper surface of the front longitudinal beam cover plate; Then weld the front bulkhead of the front suspension to the inner cavity of the front longitudinal beam cover; Then, the front suspension rear bulkhead and the front longitudinal beam front reinforcement plate are connected by spot welding, and then welded together into the inner cavity of the front longitudinal beam cover plate to form a front longitudinal beam cover plate assembly; Finally, the front longitudinal beam cover assembly and the front longitudinal beam body are welded together to form the front longitudinal beam assembly; The power mount is embedded in the front longitudinal beam cavity in the front longitudinal beam assembly and is installed on the suspension mounting point by means of bolts passing through bolt holes, so as to fix the power mount on the front beam assembly in an embedded manner.

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