Automobile three-link rear suspension body structure and automobile

Abstract

The present invention discloses a three-link rear suspension body structure for an automobile. The rear side panel transverse connecting plate of the rear suspension reinforcement plate assembly is assembled and connected to the rear wheelhouse inner panel assembly, the rear side panel inner panel assembly, and the rear side panel reinforcement plate assembly, respectively. The rear suspension reinforcement plate is connected to the rear side panel transverse connecting plate. The rear suspension reinforcement plate is mounted on the rear suspension mounting plate via the wheelhouse inner panel. One end of the rear seat latch reinforcement plate is connected to the rear side panel transverse connecting plate, and the other end thereof is connected to the lower body frame. The vehicle body forces are transmitted through the assembly of the rear suspension reinforcement plate assembly and the rear wheelhouse inner panel assembly to one side of the assembly of the rear side panel inner panel assembly and the rear side panel reinforcement plate assembly, and to one side of the lower body frame. The present invention also discloses an automobile having the above-described three-link rear suspension body structure. The automobile and the automobile implementing the three-link rear suspension body structure of the present invention can enhance the rigidity of the rear suspension body mounting points and the overall strength of the automobile, effectively reducing the excitation of the rear suspension.

Description

Technical Field

[0001] The present invention relates to the field of automobile manufacturing, and in particular to an automobile three-link rear suspension body structure and an automobile. Background Art

[0002] In the existing technology, it is relatively difficult to improve the vehicle's bending and torsional modes, vehicle stiffness, and NVH performance for a three-link rear suspension structure with integrated springs and dampers. After all, the three-link rear suspension structure has large dynamic excitations and requires higher overall performance than a traditional torsion beam structure (especially the rear structure of the upper body, where the stress points of the integrated springs and dampers are mainly in the wheel arch area of ​​the upper body).

[0003] The existing automobile three-link rear suspension body structure is prone to a series of problems such as stress concentration in key parts, durable fracture, loose joints and abnormal noise due to unreasonable structural design. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a three-link rear suspension body structure and a car, which can enhance the rigidity of the rear suspension body installation point and the overall strength of the car, and effectively decompose the excitation of the rear suspension.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a three-link rear suspension body structure of an automobile, comprising: a rear wheel housing inner panel assembly, a rear side panel inner panel assembly, a rear side panel reinforcement panel assembly and a rear suspension reinforcement panel assembly, the rear wheel housing inner panel assembly is assembled and connected with the rear suspension reinforcement panel assembly, and the rear side panel inner panel assembly is assembled and connected with the rear side panel reinforcement panel assembly; the rear wheel housing inner panel assembly comprises: a wheel housing inner panel and a wheel housing outer panel assembled and connected with the wheel housing inner panel, and a rear suspension mounting plate is installed on the wheel housing inner panel; one end of the rear wheel housing inner panel assembly is connected to the lower body frame, and the other end opposite to the rear wheel housing inner panel assembly is assembled and connected with the rear side panel reinforcement panel assembly as a whole; the rear suspension reinforcement panel assembly comprises: a rear side panel transverse connecting plate, a rear suspension reinforcement panel and a rear seat lock reinforcement panel, the rear side panel transverse connecting plate is assembled and connected with the rear wheel housing inner panel assembly and the rear side panel inner panel assembly respectively, and the rear suspension reinforcement panel is assembled and connected with the wheel housing inner panel assembly The rear seat inner panel is adapted to be mounted on the rear suspension mounting plate, one end of the rear seat lock reinforcement plate is connected to the rear side panel transverse connecting plate, and the other opposite end is connected to the lower body frame, wherein: the body force is transmitted to one side of the rear side panel inner panel assembly and the rear side panel reinforcement plate assembly and one side of the lower body frame through the entire assembly of the rear suspension reinforcement plate assembly and the rear wheel housing inner panel assembly; the rear suspension reinforcement plate, the wheel housing inner panel and the rear suspension mounting plate are welded to form a channel-shaped double-cavity structure, and are connected to the lower body frame; the rear side panel inner panel assembly includes: a D-pillar lower inner panel, a D-pillar upper inner panel and a rear side panel inner panel, wherein: the rear side panel inner panel is assembled and connected to the D-pillar lower inner panel and the D-pillar upper inner panel respectively; the rear side panel transverse connecting plate is connected to the D-pillar lower inner panel and the rear side panel inner panel respectively, and the body force is transmitted to the rear side panel transverse connecting plate and the rear side panel inner panel through the rear wheel housing inner panel assembly and the rear seat lock reinforcement plate.

[0006] Among them, the force exerted on the vehicle body is transmitted to the lower inner panel of the D-pillar, the upper inner panel of the D-pillar and the rear side panel through the rear wheel housing inner panel assembly, the rear suspension reinforcement plate and the rear side panel transverse connecting plate respectively; the force exerted on the vehicle body is transmitted to the lower vehicle body frame through the rear wheel housing inner panel assembly and the rear suspension reinforcement plate.

[0007] Among them, the rear side panel reinforcement plate assembly includes: the left rear side panel upper reinforcement plate, the D-pillar upper reinforcement plate, the rear side panel rear reinforcement plate and the rear side panel front reinforcement plate, among which: the left rear side panel upper reinforcement plate is respectively connected to one end of the rear side panel front reinforcement plate and the D-pillar upper reinforcement plate, and the rear side panel rear reinforcement plate is connected to the other end of the D-pillar upper reinforcement plate; the rear side panel front reinforcement plate and the rear side panel rear reinforcement plate are respectively assembled and connected with the rear wheel housing inner panel assembly and the rear suspension reinforcement plate assembly.

[0008] Among them, the left rear side panel upper reinforcement plate, the D-pillar upper reinforcement plate and the rear side panel rear reinforcement plate are respectively assembled and connected with the rear side panel inner panel assembly.

[0009] Among them, the rear side panel rear reinforcement plate and the rear side panel front reinforcement plate are respectively assembled and connected with a wheel house outer panel, wherein: the force of the vehicle body is transmitted to the left rear side panel upper reinforcement plate and the D-pillar upper reinforcement plate through the rear wheel house inner panel assembly, the rear side panel rear reinforcement plate, and the rear side panel front reinforcement plate respectively.

[0010] The force on the vehicle body is transmitted through the rear wheel arch inner panel assembly and the rear side panel front reinforcement plate to the rear section of the door sill reinforcement plate.

[0011] In order to solve the above technical problems, the present invention also discloses a car having the above three-link rear suspension body structure.

[0012] The three-link rear suspension vehicle body structure and the vehicle provided by the present invention have the following beneficial effects: the three-link rear suspension vehicle body structure comprises: a rear wheel housing inner panel assembly, a rear side panel inner panel assembly, a rear side panel reinforcement panel assembly and a rear suspension reinforcement panel assembly; the rear wheel housing inner panel assembly is assembled and connected with the rear suspension reinforcement panel assembly, and the rear side panel inner panel assembly is assembled and connected with the rear side panel reinforcement panel assembly; the rear wheel housing inner panel assembly comprises: a wheel housing inner panel and a wheel housing outer panel assembled and connected with the wheel housing inner panel, and a rear suspension mounting plate is mounted on the wheel housing inner panel; one end of the rear wheel housing inner panel assembly is connected to the lower vehicle body frame, and the other end opposite thereto is assembled and connected with the rear side panel inner panel assembly and the rear side panel reinforcement panel assembly as a whole; the rear suspension reinforcement panel assembly comprises: the rear side panel The transverse connecting plate, the rear suspension reinforcement plate and the rear seat lock reinforcement plate, the rear side panel transverse connecting plate are respectively assembled and connected with the rear wheel housing inner panel assembly and the rear side panel inner panel assembly, the rear suspension reinforcement plate is connected to the rear side panel transverse connecting plate, the rear suspension reinforcement plate is adapted and installed on the rear suspension mounting plate through the wheel housing inner panel, one end of the rear seat lock reinforcement plate is connected to the rear side panel transverse connecting plate, and the other opposite end is connected to the lower body frame, wherein: the force of the body is transmitted to one side of the overall assembly of the rear side panel inner panel assembly and the rear side panel reinforcement plate assembly and one side of the lower body frame through the overall assembly of the rear suspension reinforcement plate assembly and the rear wheel housing inner panel assembly, which can enhance the stiffness of the rear suspension body mounting point and the overall strength of the car, and effectively decompose the excitation of the rear suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the three-link rear suspension body structure of an automobile according to an embodiment of the present invention.

[0015] Figure 2It is a left side structural schematic diagram of the three-link rear suspension body structure of an automobile according to an embodiment of the present invention.

[0016] Figure 3 It is a right side structural schematic diagram of the three-link rear suspension body structure of an automobile according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] See also Figure 1-3 FIG. 1 shows a first embodiment of the three-link rear suspension vehicle body structure of the present invention.

[0019] The three-link rear suspension body structure of the automobile in this embodiment is applied to the rear suspension structure design of electric SUV vehicles. This structure can penetrate the transmission path, greatly improve the overall frame rigidity and strength of the rear side area, enhance the local dynamic stiffness of the rear shock absorber area, effectively resolve and absorb the excitation generated by the rear shock absorber, effectively reduce the noise and vibration of the rear body, and improve driving safety, handling stability, and comfort.

[0020] The three-link rear suspension vehicle body structure in this embodiment includes: a rear wheelhouse inner panel assembly A, a rear side panel inner panel assembly B, a rear side panel reinforcement plate assembly C, and a rear suspension reinforcement plate assembly K. The rear side panel inner panel assembly B and the rear side panel reinforcement plate assembly C are assembled and connected as a single unit, forming the upper section of the three-link rear suspension vehicle body structure. The rear suspension reinforcement plate assembly K and the rear wheelhouse inner panel assembly A are assembled and connected as a single unit, forming the lower section of the three-link rear suspension vehicle body structure.

[0021] In specific implementation, the rear wheelhouse inner panel assembly A comprises a wheelhouse inner panel 11, on which a rear suspension mounting plate 13 is mounted. One end of the rear wheelhouse inner panel assembly A is connected to the lower vehicle body frame T, while the other end is connected to the rear quarter panel inner panel assembly B and the rear quarter panel reinforcement plate assembly C. Vehicle body forces are transmitted through the rear suspension reinforcement plate assembly K and rear wheelhouse inner panel assembly A to one side of the rear quarter panel inner panel assembly B and the rear quarter panel reinforcement plate assembly C, as well as to one side of the lower vehicle body frame T. In this embodiment, after the rear suspension reinforcement plate assembly K is assembled with the rear wheelhouse inner panel assembly A, a wheelhouse outer panel 12 is further assembled. The floor frame T comprises longitudinal beams connected to the rear wheelhouse inner panel assembly A and transverse beams connected thereto.

[0022] The rear side panel inner panel assembly B includes: a D-pillar lower inner panel 21, a D-pillar upper inner panel 22 and a rear side panel inner panel 23, wherein: the rear side panel inner panel 23 is assembled and connected with the D-pillar lower inner panel 21 and the D-pillar upper inner panel 22 respectively.

[0023] The rear side panel reinforcement assembly C includes a left rear side panel upper reinforcement panel 31, a D-pillar upper reinforcement panel 32, a rear side panel rear reinforcement panel 33, a rear side panel front reinforcement panel 34, and a rocker reinforcement rear section 35. In this embodiment, the rear side panel front reinforcement panel 34 and the rocker reinforcement rear section 35 serve as a framework cavity, forming a framework connection with the rear wheelhouse inner panel assembly A, the transverse connecting plate 41, and the side sills.

[0024] The left rear side panel upper reinforcement plate 31 is connected to one end of the rear side panel front reinforcement plate 34 and the D-pillar upper reinforcement plate 32 respectively, and the rear side panel rear reinforcement plate 33 is connected to the other end of the D-pillar upper reinforcement plate 32 .

[0025] The rear suspension reinforcement plate assembly K includes: a rear side panel transverse connecting plate 41, a rear suspension reinforcement plate 42 and a rear seat lock reinforcement plate 43, wherein: the rear side panel transverse connecting plate 41 is assembled and connected with the rear wheelhouse inner panel assembly A, the rear side panel inner panel assembly B and the rear side panel reinforcement plate assembly C respectively, the rear suspension reinforcement plate 42 is connected to the rear side panel transverse connecting plate 41 and is adapted to be installed on the rear suspension mounting plate 13, one end of the rear seat lock reinforcement plate 43 is connected to the rear side panel transverse connecting plate 41, and the other opposite end is connected to the lower vehicle body frame T, and the rear side panel transverse connecting plate 41 is connected to the D-pillar lower inner panel 21 and the rear side panel inner panel 23 respectively.

[0026] The rear suspension reinforcement plate 42 is connected to the rear side panel transverse connecting plate 41 and is adapted to be installed on the rear suspension mounting plate 13. Its function is to form a connection structure that integrates the upper and lower parts. The cavities on both sides of the rear suspension reinforcement plate 42 run through the upper and lower parts to form an effective force transmission path.

[0027] One end of the rear seat lock reinforcement plate 43 is connected to the rear side panel transverse connecting plate 41, and the other end thereof is connected to the lower body frame T. The function of the rear seat lock reinforcement plate 43 is to play the connecting role of the upper and lower parts, penetrate the force transmission path, and make the C-pillar connect with the lower body frame as much as possible to achieve reasonable torque transmission.

[0028] In practice, the rear suspension reinforcement plate 42, the wheelhouse inner panel 11, and the rear suspension mounting plate 13 are welded to form a channel-shaped cavity structure, which is then connected to the lower vehicle body frame T. Specifically, the rear suspension reinforcement plate 42, the wheelhouse inner panel 11, and the rear suspension mounting plate 13 are welded to form an ∞-shaped dual cavity, which is then connected to the lower vehicle body frame. This arrangement enhances mounting point rigidity and overall strength, while reducing vibration caused by the rear shock absorber.

[0029] With this structural arrangement, the rear side panel transverse connecting plate 41 penetrates the entire rear side panel of the vehicle body and connects to the D-pillar lower inner panel 21 and the D-pillar upper inner panel 22, effectively decoupling the excitation of the rear overhang. For example, the rear side panel transverse connecting plate 41 penetrates three transmission paths, forming a crisscrossing structure that connects the entire frame, vertically, frontally, and internally.

[0030] In the specific implementation of the three-link rear suspension vehicle body structure of this embodiment, the force transmission path is as follows: Vehicle body forces are transmitted through the assembly of the rear suspension reinforcement plate assembly K and the rear wheelhouse inner panel assembly A to one side (upward in the figure) of the rear side panel inner panel assembly B and rear side panel reinforcement plate assembly C, and to one side (downward in the figure) of the lower vehicle body frame T. Specifically, vehicle body forces are transmitted through the rear wheelhouse inner panel assembly A, the rear suspension reinforcement plate 42, and the rear side panel transverse connecting plate 41 to the D-pillar lower inner panel 21, the D-pillar upper inner panel 22, and the rear side panel inner panel 23, respectively. Vehicle body forces are transmitted through the rear wheelhouse inner panel assembly A and the rear suspension reinforcement plate 42 to the lower vehicle body frame T. Vehicle body forces are transmitted through the rear wheelhouse inner panel assembly A and the rear seat buckle reinforcement plate 43 to the rear side panel transverse connecting plate 41 and the rear side panel inner panel 23.

[0031] Furthermore, the rear side panel rear reinforcement 33 is assembled and connected to the wheelhouse inner panel 11 of the rear wheelhouse inner panel assembly A. Vehicle forces are transmitted through the rear wheelhouse inner panel assembly A, the rear side panel rear reinforcement 33, and the rear side panel front reinforcement 34 to the left rear side panel upper reinforcement 31 and the D-pillar upper reinforcement 32, respectively. Vehicle forces are then transmitted through the rear wheelhouse inner panel assembly A and the rear side panel front reinforcement 34 to the rocker reinforcement rear section 35. This unified force transmission path enhances structural rigidity, stability, and NTF performance.

[0032] The automobile three-link rear suspension body structure and automobile implemented in the present invention have the following beneficial effects: the automobile three-link rear suspension body structure comprises: a rear wheel housing inner panel assembly, a rear side panel inner panel assembly, a rear side panel reinforcement panel assembly and a rear suspension reinforcement panel assembly, the rear wheel housing inner panel assembly is assembled and connected with the rear suspension reinforcement panel assembly, the rear side panel inner panel assembly is assembled and connected with the rear side panel reinforcement panel assembly; the rear wheel housing inner panel assembly comprises: a wheel housing inner panel and a wheel housing outer panel assembled and connected with the wheel housing inner panel, and a rear suspension mounting plate is installed on the wheel housing inner panel; one end of the rear wheel housing inner panel assembly is connected to the lower vehicle body frame, and the other end opposite to the rear wheel housing inner panel assembly is assembled and connected with the rear side panel reinforcement panel assembly as a whole; the rear suspension reinforcement panel assembly comprises: the rear side panel The transverse connecting plate, the rear suspension reinforcement plate and the rear seat lock reinforcement plate, the rear side panel transverse connecting plate are respectively assembled and connected with the rear wheel housing inner panel assembly and the rear side panel inner panel assembly, the rear suspension reinforcement plate is connected to the rear side panel transverse connecting plate, the rear suspension reinforcement plate is adapted and installed on the rear suspension mounting plate through the wheel housing inner panel, one end of the rear seat lock reinforcement plate is connected to the rear side panel transverse connecting plate, and the other opposite end is connected to the lower body frame, wherein: the force of the body is transmitted to one side of the overall assembly of the rear side panel inner panel assembly and the rear side panel reinforcement plate assembly and one side of the lower body frame through the overall assembly of the rear suspension reinforcement plate assembly and the rear wheel housing inner panel assembly, which can enhance the stiffness of the rear suspension body mounting point and the overall strength of the car, and effectively decompose the excitation of the rear suspension.

Claims

1. A three-link rear suspension vehicle body structure, characterized in that: include: A rear wheelhouse inner panel assembly, a rear side panel inner panel assembly, a rear side panel reinforcement panel assembly, and a rear suspension reinforcement panel assembly, wherein the rear wheelhouse inner panel assembly is assembled and connected to the rear suspension reinforcement panel assembly, and the rear side panel inner panel assembly is assembled and connected to the rear side panel reinforcement panel assembly; The rear wheelhouse inner panel assembly includes: a wheelhouse inner panel, on which a rear suspension mounting plate is mounted; one end of the rear wheelhouse inner panel assembly is connected to the lower vehicle body frame, and the other end thereof is integrally assembled and connected to the rear side panel inner panel assembly and the rear side panel reinforcement panel assembly; The rear suspension reinforcement plate assembly includes: a rear side panel transverse connecting plate, a rear suspension reinforcement plate, and a rear seat lock reinforcement plate. The rear side panel transverse connecting plate is assembled and connected to the rear wheelhouse inner panel assembly and the rear side panel inner panel assembly respectively. The rear suspension reinforcement plate is connected to the rear side panel transverse connecting plate. The rear suspension reinforcement plate is adapted to be mounted on the rear suspension mounting plate through the wheelhouse inner panel. One end of the rear seat lock reinforcement plate is connected to the rear side panel transverse connecting plate, and the other opposite end is connected to the lower vehicle body frame, wherein: The vehicle body force is transmitted through the assembly of the rear suspension reinforcement plate assembly and the rear wheelhouse inner panel assembly to one side of the assembly of the rear side panel inner panel assembly and the rear side panel reinforcement plate assembly and one side of the lower vehicle body frame; The rear suspension reinforcement plate, the wheel house inner plate and the rear suspension mounting plate are welded to form a channel-shaped double-cavity structure, and are connected to the lower body frame; The rear side panel inner panel assembly includes: a D-pillar lower inner panel, a D-pillar upper inner panel and a rear side panel inner panel, wherein: the rear side panel inner panel is assembled and connected with the D-pillar lower inner panel and the D-pillar upper inner panel respectively; the rear side panel transverse connecting plate is connected with the D-pillar lower inner panel and the rear side panel inner panel respectively, and the force of the vehicle body is transmitted to the rear side panel transverse connecting plate and the rear side panel inner panel through the rear wheelhouse inner panel assembly and the rear seat lock reinforcement plate.

2. The automobile three-link rear suspension body structure according to claim 1, characterized in that: The vehicle body force is transmitted to the D-pillar lower inner panel, the D-pillar upper inner panel and the rear side panel inner panel respectively through the rear wheel housing inner panel assembly, the rear suspension reinforcement plate and the rear side panel transverse connecting plate; The force of the vehicle body is transmitted to the lower vehicle body frame through the rear suspension reinforcement plate and the rear wheel housing inner panel assembly.

3. The automobile three-link rear suspension body structure according to claim 1, characterized in that: The rear side panel reinforcement plate assembly includes: a left rear side panel upper reinforcement plate, a D-pillar upper reinforcement plate, a rear side panel rear reinforcement plate, and a rear side panel front reinforcement plate, wherein: the left rear side panel upper reinforcement plate is connected to one end of the rear side panel front reinforcement plate and the D-pillar upper reinforcement plate, respectively, and the rear side panel rear reinforcement plate is connected to the other end of the D-pillar upper reinforcement plate; The rear side panel front reinforcement plate and the rear side panel rear reinforcement plate are respectively assembled and connected to the rear wheel housing inner panel assembly and the rear suspension reinforcement plate assembly in an integral assembly.

4. The automobile three-link rear suspension body structure according to claim 3, characterized in that: The left rear side panel upper reinforcement plate, the D-pillar upper reinforcement plate and the rear side panel rear reinforcement plate are respectively assembled and connected to the rear side panel inner panel assembly.

5. The automobile three-link rear suspension body structure according to claim 3, characterized in that: The rear side panel rear reinforcement plate and the rear side panel front reinforcement plate are respectively assembled and connected to a wheel house outer panel, wherein: The force on the vehicle body is transmitted to the left rear side panel upper reinforcement plate and the D-pillar upper reinforcement plate respectively through the rear wheel housing inner panel assembly, the rear side panel rear reinforcement plate, and the rear side panel front reinforcement plate.

6. The automobile three-link rear suspension body structure according to claim 3, characterized in that: The force on the vehicle body is transmitted to the rear section of a door sill reinforcement plate through the rear wheel housing inner panel assembly and the rear side panel front reinforcement plate.

7. An automobile, characterized in that: The automobile comprises the automobile three-link rear suspension body structure according to any one of claims 1 to 6.

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