Vehicle body rear frame structure and vehicle
By introducing multiple force transmission channels and reinforcing plates into the rear frame of the vehicle body, the problem of unreasonable force transmission channel settings was solved, the body rigidity and torsional performance were improved, and NVH performance and passenger comfort were enhanced.
Patent Information
- Application Number
- CN202520053241.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-09
AI Technical Summary
The existing rear frame structure of the vehicle body has an unreasonable force transmission channel setting, resulting in insufficient rigidity, which affects the vehicle's NVH performance and passenger comfort.
Design a rear frame structure for a vehicle body, including a rear side panel reinforcement plate, a rear floor side beam, and multiple force transmission channels to form a stable frame structure, optimize force transmission performance, and enhance overall rigidity.
It improves the connection matching and torsional performance of the rear frame of the vehicle body, optimizes NVH performance, enhances passenger comfort, and effectively distributes load to protect passenger safety.
Smart Images
Figure CN223631643U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle parts technical field especially, relate to a kind of vehicle body rear frame structure and vehicle. BACKGROUND
[0002] At present, in the pure electric vehicle technical field, especially for the vehicle equipped with long-range large battery pack and multi-link air spring rear suspension, panoramic sunroof and panoramic sunroof glass are usually used, and the upper frame of the vehicle body needs to have sufficient strength and rigidity, however, the rear frame of the vehicle body in the prior art is usually insufficiently connected with the upper end roof frame and the lower end path, which causes the overall structure of the rear frame of the vehicle body to perform poorly when bearing load. In addition, the rear frame of the vehicle body also has an unreasonable force transmission channel, which makes the rear frame of the vehicle body insufficiently rigid, easily causing NVH (Noise, Vibration, Harshness) problems, which seriously affects the comfort experience of the passengers. SUMMARY
[0003] The utility model embodiment provides a kind of vehicle body rear frame structure and vehicle, to solve the technical problems such as insufficient rigidity caused by unreasonable force transmission channel of rear frame structure of vehicle body in the prior art.
[0004] The utility model embodiment provides vehicle body rear frame structure, including rear side wall upper reinforcement and rear floor side beam;The first upper and lower force transmission channel is provided between the front end of the rear side wall upper reinforcement and the front end of the rear floor side beam;Second upper and lower force transmission channel is provided between the rear end of the rear side wall upper reinforcement and chassis connecting point of the rear floor side beam;Third upper and lower force transmission channel is provided between the rear end of the rear side wall upper reinforcement and the rear end of the rear floor side beam;The first upper and lower force transmission channel, the second upper and lower force transmission channel and the third upper and lower force transmission channel are sequentially spaced along the rear floor side beam.
[0005] Optionally, the vehicle body rear frame structure further includes a transverse force transmission channel spaced between the rear side wall upper reinforcement and the rear floor side beam, the transverse force transmission channel connects the first upper and lower force transmission channel, the second upper and lower force transmission channel and the third upper and lower force transmission channel.
[0006] Optionally, the vehicle body rear frame structure further includes a C-pillar, a rear wheel cover reinforcement beam, a D-pillar and a rear wall reinforcement plate.
[0007] The first upper and lower force transmission channel is connected to the C-pillar between the front end of the rear side wall upper reinforcement and the front end of the rear floor side beam.
[0008] The second up-and-down force transmission channel comprises the rear wheel cover reinforcing beam connected between the rear end of the rear side wall upper reinforcing plate and the chassis connecting point of the rear floor side beam;
[0009] The third up-and-down force transmission channel comprises the D pillar and the rear wall reinforcing plate, the upper end of the D pillar being connected to the rear end of the rear side wall upper reinforcing plate and the upper end of the rear wheel cover reinforcing beam, and the rear wall reinforcing plate being connected between the lower end of the D pillar and the rear end of the rear floor side beam.
[0010] Optionally, the transverse force transmission channel comprises a rear side wall cross beam arranged between the rear side wall upper reinforcing plate and the rear floor side beam, the rear side wall cross beam being sequentially connected to the C pillar, the rear wheel cover reinforcing beam and the rear wall reinforcing plate from front to back.
[0011] The rear body frame structure further comprises a rear side wall inner plate, the rear side wall inner plate being connected to the rear side wall upper reinforcing plate, the C pillar, the rear wheel cover reinforcing beam, the rear side wall cross beam and the D pillar.
[0012] Optionally, the C pillar comprises a C pillar lower inner plate, a rear wall reinforcing middle plate and a rear side wall reinforcing plate, the C pillar lower inner plate being connected between the front end of the rear side wall upper reinforcing plate and the front end of the rear floor side beam, the upper end of the rear wall reinforcing middle plate being connected to the lower end of the rear side wall reinforcing plate, the upper end of the rear side wall reinforcing plate being connected to the front end of the rear side wall upper reinforcing plate, and the lower end of the rear wall reinforcing middle plate being connected to the front end of the rear floor side beam, the rear wall reinforcing middle plate and the rear side wall reinforcing plate being mounted on the C pillar lower inner plate, a first cavity being formed between the C pillar lower inner plate, the rear wall reinforcing middle plate and the rear side wall reinforcing plate, and / or
[0013] The rear wheel cover reinforcing beam comprises a rear wheel cover inner reinforcing middle plate, a rear wheel cover middle plate, a rear wheel cover support and a rear suspension mounting plate, the rear wheel cover inner reinforcing middle plate being connected between the rear end of the rear side wall upper reinforcing plate and the upper end of the rear wheel cover middle plate, the lower end of the rear wheel cover middle plate being connected to the chassis connecting point of the rear floor side beam, the upper end of the rear wheel cover support being connected to the rear end of the rear side wall upper reinforcing plate, the upper end of the rear suspension mounting plate being connected to the lower end of the rear wheel cover support, and the lower end of the rear suspension mounting plate being connected to the chassis connecting point of the rear floor side beam, a second cavity being formed between the rear wheel cover inner reinforcing middle plate, the rear wheel cover middle plate, the rear wheel cover support and the rear suspension mounting plate.
[0014] Optionally, the rear wall reinforcing plate comprises a rear wall outer plate and a rear wall connecting plate connected to the upper end of the rear wall outer plate, the lower end of the rear wall outer plate being connected to the rear end of the rear floor side beam.
[0015] The rear wall outer plate is connected to the D pillar through the rear wall connecting plate.
[0016] Optionally, the D-pillar comprises a D-pillar upper inner plate, a D-pillar lower inner plate, a D-pillar upper reinforcing plate and a D-pillar lower reinforcing plate;
[0017] The lower end of the D-pillar upper inner plate is connected to the upper end of the D-pillar lower inner plate; the D-pillar upper reinforcing plate is mounted on the D-pillar upper inner plate, and the D-pillar lower reinforcing plate is mounted on the D-pillar lower inner plate;
[0018] The upper end of the D-pillar upper reinforcing plate and the upper end of the D-pillar upper inner plate are both connected to the rear end of the rear quarter upper reinforcing plate and the upper end of the rear wheelhouse reinforcing beam; the lower end of the D-pillar lower reinforcing plate and the lower end of the D-pillar lower inner plate are both connected to the upper end of the rear quarter connecting plate;
[0019] The rear quarter outer plate is provided with a first accommodating cavity; the D-pillar upper inner plate, the D-pillar lower inner plate, the D-pillar upper reinforcing plate and the D-pillar lower reinforcing plate surround a second accommodating cavity which is in communication with the first accommodating cavity; the second accommodating cavity and the first accommodating cavity form a third cavity.
[0020] Optionally, the rear body frame structure further comprises a rear wheelhouse body and a rear wheelhouse outer plate;
[0021] The rear wheelhouse body is connected to the C-pillar, the rear wheelhouse reinforcing beam and the rear floor side beam; the rear wheelhouse outer plate is connected to the C-pillar, the rear wheelhouse reinforcing beam, the rear quarter cross beam and the rear wheelhouse body; the rear wheelhouse outer plate is located on the side of the rear quarter cross beam away from the rear quarter upper reinforcing plate.
[0022] Optionally, the rear floor side beam comprises a rear floor front side beam connected to the lower end of the C-pillar, and a rear floor rear side beam connected to the rear end of the rear floor front side beam; the chassis connecting point is arranged on the rear floor front side beam; the rear floor rear side beam is connected to the lower end of the rear quarter reinforcing plate;
[0023] The rear floor side beam further comprises a rear floor front side sealing plate mounted between the rear floor front side beam and the rear wheelhouse body.
[0024] The utility model also provides a vehicle comprising the rear body frame structure.
[0025] In the utility model, the rear body frame structure comprises a rear quarter upper reinforcing plate and a rear floor side beam; a first up-down force transmission channel is arranged between the front end of the rear quarter upper reinforcing plate and the front end of the rear floor side beam; a second up-down force transmission channel is arranged between the rear end of the rear quarter upper reinforcing plate and the chassis connecting point of the rear floor side beam; a third up-down force transmission channel is arranged between the rear end of the rear quarter upper reinforcing plate and the rear end of the rear floor side beam; the first up-down force transmission channel, the second up-down force transmission channel and the third up-down force transmission channel are sequentially and spacedly arranged along the rear floor side beam.
[0026] In the utility model, through setting first up and down force transmission channel, second up and down force transmission channel, third up and down force transmission channel, three force transmission channels connecting vehicle roof frame and vehicle chassis are formed in the up and down direction of vehicle, and then the above three force transmission channels and rear side wall upper reinforcing plate and rear floor side beam constitute frame structure, the layout improves the connection matching degree of vehicle body rear frame structure and vehicle body, optimizes up and down force transmission performance, further enhances the overall rigidity of vehicle body and the torsional performance of vehicle body rear, improves the NVH performance of vehicle, and further improves the passenger ride comfort. Meanwhile, the vehicle length, vehicle width and vehicle height three directions of the vehicle are comprehensively considered, and the load from the roof and the bottom can be effectively transmitted and dispersed, so that the energy can be more effectively dispersed when the vehicle is impacted, and the passenger safety is protected. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the description of the embodiment of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.
[0028] Figure 1 It is the structure schematic view of the vehicle body rear frame structure in an embodiment of the utility model;
[0029] Figure 2 It is the structure schematic view of the vehicle body rear frame structure in another embodiment of the utility model;
[0030] Figure 3 It is the explosion view of the vehicle body rear frame structure in an embodiment of the utility model;
[0031] Figure 4 It is the partial structure schematic view of the vehicle body rear frame structure in an embodiment of the utility model;
[0032] Figure 5 It is the partial structure schematic view of the vehicle body rear frame structure in another embodiment of the utility model;
[0033] Figure 6 It is the partial structure schematic view of the vehicle body rear frame structure in another embodiment of the utility model.
[0034] The reference signs in the specification are as follows:
[0035] 1 - rear side wall upper reinforcement plate, 2 - C pillar, 21 - C pillar lower inner plate, 22 - rear wall reinforcement middle plate, 23 - rear side wall reinforcement plate, 3 - rear wheel cover reinforcement beam, 31 - rear wheel cover inner reinforcement middle plate, 32 - rear wheel cover middle plate, 33 - rear wheel cover support, 34 - rear suspension mounting plate, 4 - rear floor side beam, 41 - rear floor front side beam, 42 - rear floor rear side beam, 43 - rear floor front side sealing plate, 44 - chassis connecting point, 5 - rear side wall cross beam, 6 - rear wall reinforcement plate, 61 - rear wall outer plate, 62 - rear wall connecting plate, 7 - D pillar, 71 - D pillar upper inner plate, 72 - D pillar lower inner plate, 73 - D pillar upper reinforcement plate, 74 - D pillar lower reinforcement plate, 8 - rear side wall inner plate, 9 - rear wheel cover body, 10 - rear wheel cover outer plate. DETAILED DESCRIPTION
[0036] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.
[0037] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only used for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0038] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0039] In the utility model, in order to better show the structure of the auxiliary frame assembly and its connection relationship, "front" in the utility model means the front of the vehicle (i.e. Figure 1 the left side of the rear frame structure of the vehicle body shown in the figure); "rear" in the utility model means the rear of the vehicle (i.e. Figure 1The right of the rear frame structure of the vehicle body shown in the figure); The "upper" of the utility model refers to the upper of the vehicle (that is Figure 1 The upper of the rear frame structure of the vehicle body shown in the figure); The "lower" of the utility model refers to the lower of the vehicle (that is Figure 1 The lower of the rear frame structure of the vehicle body shown in the figure).
[0040] As Figure 1 The utility model provides a rear frame structure of vehicle body, including rear side wall upper reinforcing plate 1 and rear floor side beam 4;The first upper and lower force transmission channel is equipped between the front end of rear side wall upper reinforcing plate 1 and the front end of rear floor side beam 4;Second upper and lower force transmission channel is equipped between the rear end of rear side wall upper reinforcing plate 1 and chassis connecting point 44 of rear floor side beam 4;The third upper and lower force transmission channel is equipped between the rear end of rear side wall upper reinforcing plate 1 and the rear end of rear floor side beam 4;First upper and lower force transmission channel, second upper and lower force transmission channel and third upper and lower force transmission channel are sequentially spaced along rear floor side beam 4. Wherein, three upper and lower force transmission channels are arranged between rear side wall upper reinforcing plate 1 and rear floor side beam 4, and first upper and lower force transmission channel, second upper and lower force transmission channel and third upper and lower force transmission channel are sequentially distributed in the front end rear end direction of rear floor side beam 4;Further, first upper and lower force transmission channel, second upper and lower force transmission channel and third upper and lower force transmission channel are all cavity type force transmission channels, that is, a cavity is arranged in each force transmission channel, so that the rear frame structure of the vehicle body can not only reduce the weight, but also form a stable frame structure between the vehicle roof frame and the vehicle chassis, improve the overall stiffness and torsional performance of the vehicle body.
[0041] Further, as Figure 1 The chassis connecting point 44 opposite the vehicle chassis hard point is arranged on the rear floor side beam 4, so that the rear frame structure of the vehicle body is installed on the vehicle chassis through the above-mentioned chassis connecting point 44, and the overall stiffness and torsional performance of the vehicle body are improved.
[0042] In the rear frame structure of the vehicle body of the above-embodiment of the utility model, by arranging first upper and lower force transmission channel, second upper and lower force transmission channel and third upper and lower force transmission channel, three force transmission channels connecting the vehicle roof frame and the vehicle chassis are formed in the up-down direction of the vehicle, and then the frame structure is formed by the above-mentioned three force transmission channels, rear side wall upper reinforcing plate 1 and rear floor side beam 4. This layout not only improves the connection matching degree of the rear frame structure of the vehicle body and the vehicle body, optimizes the upper and lower force transmission performance, but also further enhances the overall stiffness of the vehicle body and the torsional performance of the rear of the vehicle body, improves the NVH performance of the vehicle, and further improves the passenger riding comfort. At the same time, the vehicle length, vehicle width and vehicle height are comprehensively considered, and the load from the roof and the bottom can be effectively transmitted and dispersed, so that the energy can be effectively dispersed when the vehicle is impacted, and the passenger safety is protected.
[0043] In some embodiments, the rear frame structure of the vehicle body further includes lateral force transmission channels spaced between the rear side panel reinforcement plate 1 and the rear floor side beam 4. These lateral force transmission channels connect the first, second, and third upper and lower force transmission channels. That is, the lateral force transmission channels are spaced laterally (in the vehicle's longitudinal direction) between the rear side panel reinforcement plate 1 and the rear floor side beam 4. Thus, the first, second, and third upper and lower force transmission channels, the lateral force transmission channels, the rear side panel reinforcement plate 1, and the rear floor side beam 4 form a grid-like frame structure, further improving the overall rigidity and torsional resistance of the vehicle body.
[0044] In one embodiment, such as Figure 1 As shown, the rear frame structure of the vehicle body also includes a C-pillar 2, a rear wheel arch reinforcement beam 3, a D-pillar 7, and a rear bulkhead reinforcement plate 6; the first vertical force transmission channel includes the C-pillar 2 connecting the front end of the rear bulkhead reinforcement plate 1 and the front end of the rear floor side beam 4; the second vertical force transmission channel includes the rear wheel arch reinforcement beam 3 connecting the rear end of the rear bulkhead reinforcement plate 1 and the chassis system connection point 44 of the rear floor side beam 4; the third vertical force transmission channel includes the rear bulkhead reinforcement plate 6 and the D-pillar 7; the upper end of the D-pillar 7 connects the rear end of the rear bulkhead reinforcement plate 1 and the upper end of the rear wheel arch reinforcement beam 3; the rear bulkhead reinforcement plate 6 connects the lower end of the D-pillar 7 and the rear end of the rear floor side beam 4. Understandably, a C-pillar 2 is provided between the front end of the rear side panel reinforcement plate 1 and the front end of the rear floor side beam 4. The C-pillar 2 is a cavity structure to form a first vertical force transmission channel. A rear wheel arch reinforcement beam 3 is provided between the rear end of the rear side panel reinforcement plate 1 and the chassis connection point 44 of the rear floor side beam 4. The rear wheel arch reinforcement beam 3 is a cavity structure to form a second vertical force transmission channel. The upper end of the D-pillar 7 connects the rear end of the rear side panel reinforcement plate 1 and the upper end of the rear wheel arch reinforcement beam 3, and the lower end of the D-pillar 7 connects the upper end of the rear panel reinforcement plate 6. The lower end of plate 6 is connected to the rear end of the rear floor side beam 4. The D-pillar 7 and the rear bulkhead reinforcing plate 6 are both cavity structures to form the third upper and lower force transmission channel. The first, second, and third upper and lower force transmission channels are arranged sequentially along the front-rear direction of the vehicle, and all three channels are connected between the rear side bulkhead reinforcing plate 1 and the rear floor side beam 4. Thus, the first, second, and third upper and lower force transmission channels, the rear side bulkhead reinforcing plate 1, and the rear floor side beam 4 form a frame structure. Furthermore, the first, second, and third upper and lower force transmission channels are all cavity-type force transmission channels; that is, each force transmission channel has a cavity. This allows the rear frame structure to reduce weight while forming a stable frame structure with the vehicle roof frame and vehicle chassis, improving the overall rigidity and torsional resistance of the vehicle body.
[0045] In one embodiment, such as Figure 1 As shown, the lateral force transmission channel includes a rear side wall crossbeam 5 spaced between the rear side wall upper reinforcing plate 1 and the rear floor side beam 4. The rear side wall crossbeam 5 connects the C-pillar, the rear wheel arch reinforcing beam 3, and the rear side wall reinforcing plate 6 sequentially from front to rear. Understandably, the first, second, and third upper and lower force transmission channels, the rear side wall upper reinforcing plate 1, the rear side wall crossbeam 5, and the rear floor side beam 4 form a grid-like frame structure, further improving the overall rigidity and torsional resistance of the vehicle body.
[0046] In one embodiment, such as Figures 1 to 3 As shown, the rear frame structure of the vehicle body also includes a rear side panel 8; the rear side panel 8 connects the rear side upper reinforcing plate 1, the C-pillar 2, the rear wheel arch reinforcing beam 3, the rear side crossbeam 5, and the D-pillar 7. Understandably, the rear side crossbeam 5 connects the C-pillar 2 and the rear side crossbeam 5, making the grid-shaped rear frame structure of the vehicle body more robust and stable; on the side of the rear side crossbeam 5 away from the rear floor side beam 4, the connection structure between the rear side panel 8 and the rear side upper reinforcing plate 1, C-pillar 2, rear wheel arch reinforcing beam 3, rear side crossbeam 5, and D-pillar 7 makes the entire rear frame structure more tightly connected to the roof, reducing noise and vibration caused by structural mismatch, and further improving the vehicle's NVH performance.
[0047] In one embodiment, such as Figures 1 to 3As shown, the C pillar 2 comprises a C pillar lower inner panel 21, a rear quarter reinforcement middle panel 22 and a rear quarter reinforcement panel 23; the C pillar lower inner panel 21 is connected between the front end of the rear quarter upper reinforcement panel 1 and the front end of the rear floor side beam 4; the upper end of the rear quarter reinforcement middle panel 22 is connected to the lower end of the rear quarter reinforcement panel 23, the upper end of the rear quarter reinforcement panel 23 is connected to the front end of the rear quarter upper reinforcement panel 1, and the lower end of the rear quarter reinforcement middle panel 22 is connected to the front end of the rear floor side beam 4; the rear quarter reinforcement middle panel 22 and the rear quarter reinforcement panel 23 are installed on the C pillar lower inner panel 21, and a first cavity is formed between the C pillar lower inner panel 21, the rear quarter reinforcement middle panel 22 and the rear quarter reinforcement panel 23. Understandably, the C pillar lower inner panel 21 is connected between the front end of the rear quarter upper reinforcement panel 1 and the front end of the rear floor side beam 4, the rear quarter reinforcement middle panel 22 is connected to the rear quarter reinforcement panel 23, the rear quarter reinforcement panel 23 is connected to the front end of the rear quarter upper reinforcement panel, the rear quarter reinforcement middle panel 22 is connected to the front end of the rear floor side beam 4, and the rear quarter reinforcement middle panel 22 and the rear quarter reinforcement panel 23 are installed on the C pillar lower inner panel 21 and form a first up-down force transmission path (arranged in the vehicle height direction and transmitting force in the up-down direction) having a first cavity. The provision of the first cavity not only enhances the rigidity of the C pillar 2, but also reduces the weight of the C pillar 2; the first up-down force transmission path can effectively disperse the load from the vehicle roof and the vehicle bottom, thereby reducing the stress concentration on a single component, improving the durability and anti-deformation ability of the entire rear frame structure of the vehicle body, and improving the connectivity of the up-down path, making the overall structural rigidity and stability of the vehicle stronger.
[0048] Further, as Figures 1 to 3 、 Figures 5 to 6As shown, the rear wheel housing reinforcing beam 3 comprises a rear wheel housing inner reinforcing middle plate 31, a rear wheel housing middle plate 32, a rear wheel housing support 33 and a rear suspension mounting plate 34; the rear wheel housing inner reinforcing middle plate 31 is connected between the rear end of the rear side wall upper reinforcing plate 1 and the upper end of the rear wheel housing middle plate 32, the lower end of the rear wheel housing middle plate 32 is connected to the chassis connecting point 44 of the rear floor side beam 4; the upper end of the rear wheel housing support 33 is connected to the rear end of the rear side wall upper reinforcing plate 1, the upper end of the rear suspension mounting plate 34 is connected to the lower end of the rear wheel housing support 33, and the lower end of the rear suspension mounting plate 34 is connected to the chassis connecting point 44 of the rear floor side beam 4; the rear wheel housing inner reinforcing middle plate 31, the rear wheel housing middle plate 32, the rear wheel housing support 33 and the rear suspension mounting plate 34 form a second cavity. Understandably, the rear wheel housing inner reinforcing middle plate 31 is connected to the rear wheel housing middle plate 32, and the rear wheel housing inner reinforcing middle plate 31 is connected to the rear end of the rear side wall upper reinforcing plate 1, and the rear wheel housing middle plate 32 is connected to the chassis connecting point 44 of the rear floor side beam 4; the rear wheel housing support 33 is connected to the rear suspension mounting plate 34, the rear suspension mounting plate 34 is connected to the rear end of the rear side wall upper reinforcing plate 1, and the rear suspension mounting plate 34 is connected to the chassis connecting point 44 of the rear floor side beam 4, and the rear wheel housing support 33 is covered and mounted on the rear wheel housing inner reinforcing middle plate 31, and the rear suspension mounting plate 34 is covered and mounted on the rear wheel housing middle plate 32, to form a second up-down force transmission path (arranged in the vehicle height direction and transmitting force in the up-down direction) with the second cavity. The provision of the second cavity not only enhances the rigidity of the rear wheel housing reinforcing beam 3, but also reduces the weight of the rear wheel housing reinforcing beam 3; the second up-down force transmission path can effectively disperse the load from the vehicle roof and the vehicle bottom, thereby reducing the stress concentration on a single component, thereby improving the durability and anti-deformation capability of the entire rear frame structure of the vehicle body, and also improving the connectivity of the up-down path, so that the overall structural rigidity and stability of the vehicle is stronger.
[0049] In an embodiment, as shown in Figures 1 to 3 The rear wall reinforcing plate 6 comprises a rear wall outer plate 61 and a rear wall connecting plate 62 connected to the upper end of the rear wall outer plate 61, and the lower end of the rear wall outer plate 61 is connected to the rear end of the rear floor side beam 4; the rear wall outer plate 61 is connected to the D-pillar 7 through the rear wall connecting plate 62. Understandably, the rear wall connecting plate 62 is connected to the rear wall outer plate 61, the rear wall outer plate 61 is connected to the rear end of the rear floor side beam 4, the rear wall connecting plate 62 is connected to the D-pillar 7, and the D-pillar 7, the rear wall outer plate 61 and the rear wall connecting plate 62 form a third force transmission path, which provides a stable force transmission path for the vehicle body and enhances the rigidity and stability of the vehicle body.
[0050] In an embodiment, as shown in Figure 1As shown, the D pillar 7 includes a D pillar 7 upper inner plate, a D pillar 7 lower inner plate, a D pillar 7 upper reinforcing plate and a D pillar 7 lower reinforcing plate; the lower end of the D pillar 7 upper inner plate is connected to the upper end of the D pillar 7 lower inner plate; the D pillar 7 upper reinforcing plate is mounted on the D pillar 7 upper inner plate, and the D pillar 7 lower reinforcing plate is mounted on the D pillar 7 lower inner plate; the upper end of the D pillar 7 upper reinforcing plate and the upper end of the D pillar 7 upper inner plate are both connected to the rear end of the rear quarter upper reinforcing plate 1 and the upper end of the rear wheel cover reinforcing beam 3; the lower end of the D pillar 7 lower reinforcing plate and the lower end of the D pillar 7 lower inner plate are both connected to the upper end of the rear wall connecting plate 62; the rear wall outer plate 61 is provided with a first accommodating cavity; the D pillar 7 upper inner plate, the D pillar 7 lower inner plate, the D pillar 7 upper reinforcing plate and the D pillar 7 lower reinforcing plate form a second accommodating cavity which communicates with the first accommodating cavity; the second accommodating cavity and the first accommodating cavity form a third cavity. Understandably, the D pillar 7 upper inner plate connects the D pillar 7 lower inner plate, and the D pillar 7 upper reinforcing plate connects the D pillar 7 lower reinforcing plate; the D pillar 7 upper reinforcing plate is mounted on the D pillar 7 upper inner plate, and the D pillar 7 lower reinforcing plate is mounted on the D pillar 7 lower inner plate, so that the D pillar 7 upper inner plate, the D pillar 7 lower inner plate, the D pillar 7 upper reinforcing plate and the D pillar 7 lower reinforcing plate form a third upper and lower force transmission channel (arranged along the height direction of the vehicle and transmitting force in the up and down direction) having a second accommodating cavity, and the second accommodating cavity and the first accommodating cavity provided on the rear wall outer plate 61 form a third cavity on the third upper and lower force transmission channel, the setting of the third cavity not only can enhance the rigidity of the rear wall reinforcing plate 6 and the D pillar 7, but also can reduce the weight of the rear wall reinforcing plate 6 and the D pillar 7; the third upper and lower force transmission channel can effectively disperse the load from the roof and the bottom of the vehicle, thereby reducing the stress concentration on a single component, thereby improving the durability and anti-deformation ability of the entire rear frame structure of the vehicle body, also improving the connectivity of the upper and lower paths, making the overall structure of the vehicle more rigid and stable.
[0051] Understandably, the first upper and lower force transmission channel, the second upper and lower force transmission channel and the third upper and lower force transmission channel are all force transmission channels connected between the rear quarter upper reinforcing plate 1 and the rear floor side beam 4, and the three force transmission channels cover the upper side beam of the roof and the rear cross beam of the roof, forming a stable stress structure, improving the connectivity of the upper and lower paths, and improving the anti-deformation ability and load-bearing capacity of the rear frame structure of the vehicle body, which helps to reduce the transmission of noise and vibration, and improves the NVH performance of the vehicle. In addition, the above three force transmission channels not only meet the demand of panoramic size sunroof and rear door function improvement, but also successfully solve the problem of weak roof frame, providing a strong guarantee for the overall performance and safety of the vehicle.
[0052] Understandably, as Figure 1As shown, when the vehicle chassis is impacted, the load of the chassis is dispersed along the first, second and third up-and-down force transmission channels from bottom to top (from the bottom of the vehicle to the top of the vehicle) respectively, so that the impact energy is gradually absorbed and dispersed in multiple force transmission channels, thereby improving the rigidity and force transmission performance of the rear frame structure of the vehicle body. Figure 2 As shown, when the vehicle roof (panoramic sunroof glass) is impacted, the load of the roof is dispersed along the first, second and third up-and-down force transmission channels from top to bottom (from the top of the vehicle to the bottom of the vehicle) respectively, so that the impact energy is gradually absorbed and dispersed in multiple paths, which can also improve the rigidity and force transmission performance of the rear frame structure of the vehicle body.
[0053] In an embodiment, as shown, Figures 1 to 4 The rear frame structure of the vehicle body further comprises a rear wheel house 9 and a rear wheel house outer panel 10; the rear wheel house 9 is connected to the C-pillar 2, the rear wheel house reinforcement beam 3 and the rear floor side beam 4; the rear wheel house outer panel 10 is connected to the C-pillar 2, the rear wheel house reinforcement beam 3, the rear side wall cross beam 5 and the rear wheel house 9; the rear wheel house outer panel 10 is located on the side of the rear side wall cross beam 5 away from the rear side wall upper reinforcement plate 1. Understandably, on the side of the rear side wall cross beam 5 away from the rear side wall upper reinforcement plate 1, the rear wheel house outer panel 10 is connected to the rear wheel house 9, and the rear wheel house outer panel 10, the rear wheel house 9, the C-pillar 2, the rear wheel house reinforcement beam 3 and the rear floor side beam 4 form a second rear frame structure, so that the entire rear frame structure of the vehicle body is more closely connected to the vehicle chassis, which can reduce noise and vibration caused by structural mismatch and improve the NVH performance of the vehicle.
[0054] In an embodiment, as shown, Figure 1 and Figure 2As shown, the rear floor side beam 4 includes a rear floor front side beam 41 connecting the lower end of the C pillar 2, and a rear floor rear side beam 42 connecting the rear end of the rear floor front side beam 41; the chassis connecting point 44 is arranged on the rear floor front side beam 41; the rear floor rear side beam 42 connects the lower end of the rear wall reinforcement plate 6. Understandably, the rear floor front side beam 41 and the rear floor rear side beam 42 constitute the rear floor side beam 4, which is connected between the lower end of the C pillar 2 and the rear wall reinforcement plate 6, and a plurality of chassis connecting points 44 are arranged on the rear floor front side beam 41, and the rear part of the vehicle body frame structure is mounted to the vehicle body chassis hard point through the chassis connecting point 44; the rear floor side beam 4 adopts a cast structure to improve the carrying capacity, and supports the beam path through the arrangement of three up-down force transmission channels, greatly improves the torsional rigidity of the rear part of the vehicle, and meets the demand for increasing the whole preparation of the long-range battery pack, and realizes the upgrading of the flagship vehicle in technology and performance. Further, the rear floor front side beam 41 and the rear floor rear side beam 42, the rear floor front side beam 41 and the C pillar 2, and the rear floor rear side beam 42 and the rear wall reinforcement plate 6 can be fixedly connected by riveting or the like; and the rigidity and durability of the connection between the above-mentioned components can be further enhanced by arranging a structural adhesive layer.
[0055] In another embodiment, as shown in Figure 3 and Figure 4 As shown, the rear floor side beam 4 further includes a rear floor front side sealing plate 43 arranged between the rear floor front side beam 41 and the rear wheel cover body 9. Understandably, the rear floor front side sealing plate 43 is arranged between the rear floor front side beam 41 and the rear wheel cover body 9, which improves the mounting stability of the rear wheel cover body 9.
[0056] As shown in Figures 1 to 3 The utility model further provides a vehicle, including above -mentioned vehicle rear part frame structure. In the vehicle in above -mentioned embodiment of the utility model, the vehicle rear part frame structure includes rear side wall upper reinforcement plate 1 and rear floor side beam 4, first up-down force transmission channel is equipped between the front end of rear side wall upper reinforcement plate 1 and the front end of rear floor side beam 4, second up-down force transmission channel is equipped between the rear end of rear side wall upper reinforcement plate 1 and chassis connecting point 44 of rear floor side beam 4, third up-down force transmission channel is equipped between the rear end of rear side wall upper reinforcement plate 1 and rear end of rear floor side beam 4, first up-down force transmission channel, second up-down force transmission channel and third up-down force transmission channel are sequentially spaced along rear floor side beam 4.
[0057] In the vehicle in the above-mentioned embodiments of the utility model, through setting first up and down force transmission channel, second up and down force transmission channel, third up and down force transmission channel, three force transmission channels connecting vehicle roof frame and vehicle chassis are formed in the up and down direction of the vehicle, and then the frame structure is formed by the above-mentioned three force transmission channels and rear side wall upper reinforcing plate 1 and rear floor side beam 4, the layout not only improves the connection matching degree of the rear frame structure of the vehicle body and the vehicle body, optimizes the up and down force transmission performance, but also further enhances the overall stiffness of the vehicle body and the torsional performance of the rear of the vehicle body, improves the NVH performance of the vehicle, and then improves the passenger riding comfort. At the same time, the vehicle length, vehicle width and vehicle height in three directions are also fully considered, and the load from the roof and the bottom can be effectively transmitted and dispersed, so that the energy can be more effectively dispersed when the vehicle is impacted, and the passenger safety is protected.
[0058] The above-mentioned embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model, and should be included in the protection scope of the utility model.
Claims
1. A vehicle body rear frame structure characterized by comprising: The rear body frame structure comprises a rear side wall upper reinforcing plate (1) and a rear floor side beam (4); a first upper and lower force transmission channel is arranged between the front end of the rear side wall upper reinforcing plate (1) and the front end of the rear floor side beam (4); a second upper and lower force transmission channel is arranged between the rear end of the rear side wall upper reinforcing plate (1) and a chassis connecting point (44) of the rear floor side beam (4); and a third upper and lower force transmission channel is arranged between the rear end of the rear side wall upper reinforcing plate (1) and the rear end of the rear floor side beam (4); the first, second and third upper and lower force transmission channels are sequentially and spacedly arranged along the rear floor side beam (4).
2. The vehicle body rear frame structure according to claim 1, characterized by, The rear body frame structure further comprises a transverse force transmission channel arranged between the rear side wall upper reinforcing plate (1) and the rear floor side beam (4), and the transverse force transmission channel connects the first, second and third upper and lower force transmission channels.
3. The vehicle body rear frame structure according to claim 2, characterized by The rear body frame structure further comprises a C pillar (2), a rear wheel cover reinforcing beam (3), a D pillar (7) and a rear wall reinforcing plate (6); The first upper and lower force transmission channel is connected to the C pillar (2) between the front end of the rear side wall upper reinforcing plate (1) and the front end of the rear floor side beam (4); The second upper and lower force transmission channel comprises the rear wheel cover reinforcing beam (3) connected between the rear end of the rear side wall upper reinforcing plate (1) and the chassis connecting point (44) of the rear floor side beam (4); The third upper and lower force transmission channel comprises the D pillar (7) and the rear wall reinforcing plate (6), the upper end of the D pillar (7) is connected to the rear end of the rear side wall upper reinforcing plate (1) and the upper end of the rear wheel cover reinforcing beam (3), and the rear wall reinforcing plate (6) is connected between the lower end of the D pillar (7) and the rear end of the rear floor side beam (4).
4. The vehicle body rear frame structure according to claim 3, characterized by The transverse force transmission channel comprises a rear side wall cross beam (5) arranged between the rear side wall upper reinforcing plate (1) and the rear floor side beam (4), and the rear side wall cross beam (5) sequentially connects the C pillar (2), the rear wheel cover reinforcing beam (3) and the rear wall reinforcing plate (6) from front to back; The rear body frame structure further comprises a rear side wall inner plate (8), and the rear side wall inner plate (8) connects the rear side wall upper reinforcing plate (1), the C pillar (2), the rear wheel cover reinforcing beam (3), the rear side wall cross beam (5) and the D pillar (7).
5. The vehicle body rear frame structure according to claim 3, characterized by The C column (2) comprises a C column lower inner plate (21), a rear wall reinforcement middle plate (22) and a rear side wall reinforcement plate (23); the C column lower inner plate (21) is connected between the front end of the rear side wall upper reinforcement plate (1) and the front end of the rear floor side beam (4); the upper end of the rear wall reinforcement middle plate (22) is connected to the lower end of the rear side wall reinforcement plate (23), the upper end of the rear side wall reinforcement plate (23) is connected to the front end of the rear side wall upper reinforcement plate (1), and the lower end of the rear wall reinforcement middle plate (22) is connected to the front end of the rear floor side beam (4); the rear wall reinforcement middle plate (22) and the rear side wall reinforcement plate (23) are installed on the C column lower inner plate (21), and a first cavity is formed between the C column lower inner plate (21), the rear wall reinforcement middle plate (22) and the rear side wall reinforcement plate (23); and / or The rear wheel cover reinforcement beam (3) comprises a rear wheel cover inner reinforcement middle plate (31), a rear wheel cover middle plate (32), a rear wheel cover support (33) and a rear suspension mounting plate (34); the rear wheel cover inner reinforcement middle plate (31) is connected between the rear end of the rear side wall upper reinforcement plate (1) and the upper end of the rear wheel cover middle plate (32), and the lower end of the rear wheel cover middle plate (32) is connected to the chassis connecting point (44) of the rear floor side beam (4); the upper end of the rear wheel cover support (33) is connected to the rear end of the rear side wall upper reinforcement plate (1), the upper end of the rear suspension mounting plate (34) is connected to the lower end of the rear wheel cover support (33), and the lower end of the rear suspension mounting plate (34) is connected to the chassis connecting point (44) of the rear floor side beam (4); a second cavity is formed between the rear wheel cover inner reinforcement middle plate (31), the rear wheel cover middle plate (32), the rear wheel cover support (33) and the rear suspension mounting plate (34).
6. The vehicle body rear frame structure according to claim 3, characterized by The rear wall reinforcement plate (6) comprises a rear wall outer plate (61) and a rear wall connecting plate (62) connected to the upper end of the rear wall outer plate (61), and the lower end of the rear wall outer plate (61) is connected to the rear end of the rear floor side beam (4); the rear wall outer plate (61) is connected to the D column (7) through the rear wall connecting plate (62).
7. The vehicle body rear frame structure according to claim 6, characterized by The D column (7) comprises a D column upper inner plate, a D column lower inner plate, a D column upper reinforcement plate and a D column lower reinforcement plate; The lower end of the D column upper inner plate is connected to the upper end of the D column lower inner plate; the D column upper reinforcement plate is installed on the D column upper inner plate, and the D column lower reinforcement plate is installed on the D column lower inner plate; The upper end of the D column upper reinforcement plate and the upper end of the D column upper inner plate are both connected to the rear end of the rear side wall upper reinforcement plate (1) and the upper end of the rear wheel cover reinforcement beam (3); the lower end of the D column lower reinforcement plate and the lower end of the D column lower inner plate are both connected to the upper end of the rear wall connecting plate (62); The rear wall outer plate (61) is provided with a first accommodating cavity; the D column (7) upper inner plate, the D column (7) lower inner plate, the D column (7) upper reinforcing plate and the D column (7) lower reinforcing plate form a second accommodating cavity in communication with the first accommodating cavity; the second accommodating cavity and the first accommodating cavity form a third cavity.
8. The vehicle body rear frame structure according to claim 4, characterized by The rear body frame structure further comprises a rear wheel cover body (9) and a rear wheel cover outer plate (10); The rear wheel cover body (9) is connected with the C column (2), the rear wheel cover reinforcing beam (3) and the rear floor side beam (4); the rear wheel cover outer plate (10) is connected with the C column (2), the rear wheel cover reinforcing beam (3), the rear side wall cross beam (5) and the rear wheel cover body (9); The rear wheel cover outer plate (10) is located on the side of the rear side wall cross beam (5) away from the rear side wall upper reinforcing plate (1).
9. The vehicle body rear frame structure according to claim 8, characterized by The rear floor side beam (4) comprises a rear floor front side beam (41) connected with the lower end of the C column (2), and a rear floor rear side beam (42) connected with the rear end of the rear floor front side beam (41); the chassis connecting point (44) is arranged on the rear floor front side beam (41); the rear floor rear side beam (42) is connected with the lower end of the rear wall reinforcing plate (6); The rear floor side beam (4) further comprises a rear floor front side sealing plate (43) installed between the rear floor front side beam (41) and the rear wheel cover body (9).
10. A vehicle characterized by comprising: The rear body frame structure comprises the rear body frame structure according to any one of claims 1-9. The rear body frame structure comprises the rear body frame structure according to any one of claims 1-9.