Vehicle body rear structure and vehicle

Abstract

The application relates to the technical field of vehicle body structures, and provides a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises a D column with a cavity, a side wall tail lamp mounting plate surrounding the D column to form a containing cavity, and a back door hinge mounting plate arranged in the containing cavity; a support is arranged in the containing cavity corresponding to the mounting position of the back door hinge, and a reinforcing piece is arranged in the cavity; the back door hinge mounting plate is attached to the front side of the side wall tail lamp mounting plate, the back door hinge is connected with the support through first fasteners penetrating through the side wall tail lamp mounting plate and the back door hinge mounting plate, and the support and the reinforcing piece are connected through second fasteners penetrating through the side wall of the containing cavity. The vehicle body rear structure improves the load bearing capacity of the vehicle body rear structure for the back door, the side wall tail lamp mounting plate can stably support the back door hinge without being specially thickened to increase the strength, and the lightweight design of the vehicle is facilitated.

Description

Technical Field

[0001] This application relates to the field of vehicle body structure technology, and in particular to a rear vehicle body structure and vehicle. Background Technology

[0002] Side-opening tailgate designs are common in off-road vehicles, commercial vehicles, and logistics vehicles. Side-opening tailgates make it easier to retrieve items from the vehicle and offer flexible loading options.

[0003] Traditional side-opening tailgates typically use single or double-layer sheet metal structures for the parts of the vehicle body they are installed in. To ensure that these parts have sufficient strength to support the tailgate, the material thickness is usually increased in these parts to improve structural strength. This results in a larger vehicle weight, which is not conducive to the lightweight design of the vehicle. Utility Model Content

[0004] In view of this, this application aims to propose a rear structure for vehicle body to facilitate lightweight vehicle design.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A rear structure of a vehicle body includes a D-pillar with a cavity, a side taillight mounting plate that forms a receiving cavity with the D-pillar, and a tailgate hinge mounting plate disposed within the receiving cavity. Corresponding to the mounting position of the tailgate hinge, a support member is provided in the receiving cavity, and a reinforcing member is provided in the cavity; the reinforcing member and the support member are arranged front and rear along the front-rear direction of the vehicle. The tailgate hinge mounting plate is attached to the front side of the side taillight mounting plate. The tailgate hinge is connected to the support member by a first fastener passing through the side taillight mounting plate and the tailgate hinge mounting plate. The support member and the reinforcement member are connected by a second fastener passing through the side wall of the receiving cavity.

[0006] Furthermore, the D-pillar includes an inner D-pillar panel and an outer D-pillar panel that forms the cavity with the inner D-pillar panel, the cavity extending along the vertical direction of the entire vehicle; The side taillight mounting plate and the outer D-pillar panel enclose the receiving cavity, which extends along the vertical direction of the vehicle.

[0007] Furthermore, the tailgate hinge includes an upper tailgate hinge and a lower tailgate hinge, which are arranged vertically along the vehicle's vertical direction. The support includes an upper support corresponding to the upper hinge of the tailgate and a lower support corresponding to the lower hinge of the tailgate. The reinforcing member includes an upper reinforcing member arranged corresponding to the upper support member, and a lower reinforcing member arranged corresponding to the lower support member.

[0008] Furthermore, both the upper support member and the lower support member are fitted with sleeves, and both the upper support member and the lower support member are connected to the first fastener through the sleeves; The upper support member is mounted on the rear door hinge mounting plate by a third fastener, and the lower support member is mounted on the rear door hinge mounting plate by a fourth fastener.

[0009] Furthermore, the upper support member includes an upper support plate and a first support column integrally formed with the upper support plate; The rear end of the first support column abuts against the rear door hinge mounting plate and is used to connect with the first fastener. The front end of the first support column abuts against the outer plate of the D-pillar and is used to connect with the second fastener.

[0010] Furthermore, the upper reinforcing member includes an upper reinforcing plate that is fitted and connected to the outer panel of the D-pillar, and a plurality of first support legs disposed on the upper reinforcing plate; the upper reinforcing plate covers the upper and lower mounting positions of the upper hinge of the tailgate. Multiple first legs are arranged circumferentially around the upper reinforcing plate, and the upper reinforcing member is welded to the inner plate of the D-pillar through the multiple first legs.

[0011] Furthermore, the lower support member includes a lower support plate, and a front support column and a rear support column integrally formed with the lower support plate; The front support column and the rear support column are respectively placed on the front and rear sides of the lower support plate, and the front support column and the rear support column are staggered. The rear end of the rear support column abuts against the rear door hinge mounting plate and is used to connect with the first fastener; the front end of the front support column abuts against the outer plate of the D-pillar and is used to connect with the second fastener.

[0012] Furthermore, the lower reinforcing member includes a lower reinforcing plate that is fitted and connected to the outer panel of the D-pillar, and a plurality of second legs disposed on the lower reinforcing plate; the lower reinforcing plate covers the upper mounting position of the lower hinge of the tailgate. Multiple second legs are arranged circumferentially around the lower reinforcing plate, and the lower reinforcing member is welded to the inner plate of the D-pillar through the multiple second legs.

[0013] Furthermore, along the longitudinal direction of the vehicle, at least one of the front and rear sides of the support member is provided with a reinforcing rib.

[0014] Compared with related technologies, this application has the following advantages: (1) The rear structure of the vehicle body described in this application forms a box-shaped frame structure with a cavity by connecting the D-pillar and the side taillight mounting plate, and arranging the reinforcing members, supporting members and the tailgate hinge mounting plate. This enables an effective force transmission path between the D-pillar and the tailgate hinge, making it less likely for excessive local stress concentration to occur at the position where the rear structure of the vehicle body connects to the tailgate hinge. This improves the load-bearing capacity of the rear structure of the vehicle body for the tailgate. The side taillight mounting plate does not need to be specially thickened to increase strength to stably support the tailgate hinge, which is beneficial to the lightweight design of the vehicle.

[0015] (2) The columnar structure formed by the inner and outer panels of the D-pillar has high structural strength. The cavity and the body are both set to extend along the vertical direction of the whole vehicle, which enables the tailgate hinge mounting plate to play a synergistic role in reinforcing the D-pillar and effectively improve the overall anti-deformation ability of the rear of the vehicle.

[0016] (3) The upper hinge and lower hinge of the tailgate are set separately, and the corresponding upper support and upper reinforcement, lower support and lower reinforcement are set so that there are two connection points between the tailgate and the vehicle body, which has a better connection firmness and can form two opposite force transmission paths, thereby improving the load-bearing capacity of the tailgate.

[0017] (4) A sleeve is installed in the upper support member. The support member is made of lightweight material and the sleeve is made of high-strength material. The sleeve is responsible for connecting with the first fastener, which is beneficial to the lightweight design of the vehicle body.

[0018] (5) Set the first support column and make the upper support member abut against the rear door hinge mounting plate and the outer plate of the D-pillar, so as to form a through force transmission channel in the front and rear directions of the whole vehicle, improve the force transmission effect, and reduce stress concentration.

[0019] (6) Set an upper reinforcing plate that fits against the outer panel of the D-pillar and a first leg that is welded to the inner panel of the D-pillar. Align the upper reinforcing plate with the upper and lower mounting positions that cover the upper hinge of the tailgate. This will enable the inner panel of the D-pillar to work together with the outer panel of the D-pillar to bear the force when the outer panel of the D-pillar is subjected to the force transmitted from the upper hinge of the tailgate. This will help improve the load-bearing effect of the D-pillar on the tailgate of the vehicle.

[0020] (7) The front support column and the rear support column are integrated with the lower support plate, which has high structural strength. The staggered arrangement of the front support column and the rear support column can make the arrangement of the lower support component more flexible and easy to adapt to the vehicle body structure.

[0021] (8) A lower reinforcing plate is provided that fits against the outer panel of the D-pillar, and a second leg is welded to the inner panel of the D-pillar. The lower reinforcing plate is aligned with the upper installation position covering the lower hinge of the tailgate. This allows the inner panel of the D-pillar to work together with the outer panel of the D-pillar to bear the force when the outer panel of the D-pillar is subjected to the force transmitted from the lower hinge of the tailgate. This is beneficial to improving the load-bearing effect of the D-pillar on the tailgate of the vehicle.

[0022] (9) Reinforcing ribs are provided on at least one side of the support in the front-rear direction, which can enhance the structural strength of the support, disperse the stress on the support, and enable the support to achieve higher load-bearing capacity with less material, which is beneficial to the lightweight design of the vehicle body.

[0023] Another object of this application is to provide a vehicle that includes the aforementioned rear body structure.

[0024] The vehicle described in this application, by utilizing the aforementioned rear body structure, can effectively transfer the force at the connection between the tailgate hinge and the body to the forward D-pillar, making it less prone to excessive local stress concentration at the location where the rear body connects to the tailgate hinge. The support components, reinforcement components, and tailgate hinge mounting plate can accurately distribute the load, and the overall volume is small, so that the side taillight mounting plate does not need to be specially thickened to increase strength, which is conducive to the lightweight design of the vehicle and improves the vehicle's range performance. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of the rear structure of the vehicle body as described in the embodiments of this application; Figure 2 This is an overall schematic diagram of the rear structure of the vehicle body described in the embodiments of this application from another perspective; Figure 3 This is a schematic diagram of the rear of the vehicle body structure as described in the embodiments of this application; Figure 4 for Figure 3 Cross-sectional view at point AA; Figure 5 for Figure 3 Cross-sectional view at point BB; Figure 6 for Figure 3 Cross-sectional view at point C; Figure 7 for Figure 3 Cross-sectional view at point DD; Figure 8 for Figure 3 Cross-sectional view at EE; Figure 9 This is an exploded view of the rear structure of the vehicle body as described in the embodiments of this application; Figure 10 This is a schematic diagram of the upper support member described in an embodiment of this application; Figure 11 This is a structural schematic diagram of the upper support member described in an embodiment of this application from another perspective; Figure 12 This is a schematic diagram of the lower support member described in an embodiment of this application; Figure 13 This is a structural schematic diagram of the lower support member described in an embodiment of this application from another perspective; Figure 14 This is a schematic diagram showing the connection between the upper support member, the lower support member, and the rear door hinge mounting plate as described in the embodiments of this application. Figure 15 This is a schematic diagram showing the connection between the upper support member, the lower support member, and the outer plate of the D-pillar as described in the embodiments of this application; Figure 16 This is a schematic diagram of the upper reinforcing member described in an embodiment of this application; Figure 17 This is a schematic diagram of the lower reinforcing member described in an embodiment of this application; Explanation of reference numerals in the attached figures: 1. Column D; 101. Inner panel of D-pillar; 102. Outer panel of D-pillar; 2. Side taillight mounting plate; 3. Rear door hinge mounting plate; 4. Support components; 401. Upper support component; 4011. Upper support plate; 4012. First support column; 4013. Second support column; 402. Lower support component; 4021. Lower support plate; 4022. Front support column; 4023. Rear support column; 403. First reinforcing rib; 404. Second reinforcing rib; 5. Reinforcing components; 501. Upper reinforcing member; 5011. Upper reinforcing plate; 5012. First leg; 502. Lower reinforcing member; 5021. Lower reinforcing plate; 5022. Second leg; 6. First fastener; 7. Second fastener; 8. Sleeve; 9. Third fastener; 10. Fourth fastener; 11. Fifth fastener; a. Cavity; b. Receiving cavity; c. Taillight mounting area. Detailed Implementation

[0026] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0030] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0032] An embodiment of the first aspect of this application provides a rear structure for vehicle body to facilitate lightweight vehicle design.

[0033] In related technologies, the side-opening tailgate design is more common in off-road vehicles, commercial vehicles, and logistics vehicles. The side-opening tailgate makes it easier to retrieve items from the vehicle and allows for flexible loading.

[0034] Especially for off-road vehicles, the side-opening tailgate allows for flexible opening on mountain trails or in wilderness campsites, avoiding the problem of insufficient top space preventing the full opening of a lift-up tailgate, thus improving outdoor convenience. Furthermore, many off-road vehicles mount a full-size spare tire on the outside of the tailgate. With a lift-up tailgate, the spare tire significantly increases the weight of the tailgate, making opening difficult and potentially damaging the hydraulic struts. A side-opening tailgate, however, allows the spare tire to open sideways, providing greater structural stability and easier opening.

[0035] Traditional side-opening tailgates typically use single or double-layer sheet metal structures for the parts of the vehicle body they are installed in. To ensure that these parts have sufficient strength to support the tailgate, the material thickness is usually increased in these parts to improve structural strength. This results in a larger vehicle weight, which is not conducive to the lightweight design of the vehicle.

[0036] In view of this, in order to overcome the shortcomings of the related technology, the rear structure of the vehicle body in this embodiment combines... Figures 1 to 9 In terms of overall design, it includes a D-pillar 1 with cavity a, a side taillight mounting plate 2 that surrounds the D-pillar 1 to form a receiving cavity b, and a rear door hinge mounting plate 3 located in the receiving cavity b.

[0037] Corresponding to the mounting position of the tailgate hinge, a support member 4 is provided in the receiving cavity b, and a reinforcing member 5 is provided in the cavity a. The reinforcing member 5 and the support member 4 are arranged front to back along the vehicle's longitudinal direction. The tailgate hinge mounting plate 3 is attached to the front side of the side taillight mounting plate 2. The tailgate hinge is connected to the support member 4 via a first fastener 6 passing through both the side taillight mounting plate 2 and the tailgate hinge mounting plate 3. The support member 4 and the reinforcing member 5 are connected via a second fastener 7 passing through the side wall of the receiving cavity b.

[0038] Therefore, by connecting the D-pillar 1 with the side taillight mounting plate 2 to form a box-shaped frame structure with a receiving cavity b, and arranging the reinforcing member 5 in the D-pillar 1 and the supporting member 4 in the receiving cavity b, the tailgate hinge, the side taillight mounting plate 2, the tailgate hinge mounting plate 3 and the supporting member 4 are connected together using the first fastener 6, and the supporting member 4 and the reinforcing member 5 are connected together using the second fastener 7, an effective force transmission path can be created between the D-pillar 1 and the tailgate hinge. After the tailgate hinge is subjected to the force applied by the tailgate, it can transmit the stress forward to the D-pillar 1, and the force is distributed from the D-pillar 1 to the vehicle body.

[0039] In this way, the location where the rear structure of the vehicle connects to the tailgate hinge is less prone to excessive local stress concentration, which helps to improve the support capacity of the rear structure for the tailgate. The support component 4, the reinforcement component 5, and the tailgate hinge mounting plate 3 can reliably distribute the load, and their overall size is small. They can stably support the tailgate without the need to specially thicken the side taillight mounting plate 2 to increase strength, which is conducive to the lightweight design of the vehicle.

[0040] Based on the above overview, specifically, the rear vehicle structure of this embodiment is used for vehicles with side-opening tailgates. Regarding the installation position of the tailgate hinge, the support member 4 and the reinforcing member 5 are positioned at the lower section of the D-pillar 1, adapting to the tailgate hinge position. Furthermore, the rear vehicle structure of this embodiment can be used at either the left or right D-pillar position, corresponding to right-side and left-side opening tailgates, respectively. Of course, the rear vehicle structure of this embodiment can also be used on both D-pillars simultaneously, resulting in a double-door tailgate.

[0041] Among them, the tailgate hinge mounting plate 3 is not only attached to the side taillight mounting plate 2, but also welded to the side taillight mounting plate 2, so that the tailgate hinge mounting plate 3 has a reinforcing effect on the side taillight mounting plate 2. The tailgate hinge mounting plate 3 extends along the vertical direction of the whole vehicle, which is conducive to transferring the stress at the tailgate hinge in both the vertical and horizontal directions.

[0042] Secondly, the first fastener 6 needs to pass through the side taillight mounting plate 2 and the rear door hinge mounting plate 3. Therefore, both the side taillight mounting plate 2 and the rear door hinge mounting plate 3 are provided with clearance holes to allow the first fastener 6 to pass through. Both the first fastener 6 and the second fastener 7 can be fasteners in the form of bolts, rivets, etc. Preferably, both the first fastener 6 and the second fastener 7 are bolts, which facilitates installation and ensures a firm and reliable connection.

[0043] Continue to combine Figures 1 to 9 As shown, in some exemplary embodiments, the D-pillar 1 includes an inner D-pillar panel 101 and an outer D-pillar panel 102 that, together with the inner D-pillar panel 101, forms a cavity a, which extends along the vertical direction of the vehicle. The side taillight mounting plate 2 and the outer D-pillar panel 102 form the aforementioned receiving cavity b, which extends along the vertical direction of the vehicle.

[0044] With this design, the D-pillar 1, formed by the inner D-pillar panel 101 and the outer D-pillar panel 102, has strong resistance to bending and torsion, while also facilitating the placement of reinforcing members 5 into cavity a. Both cavity a and the receiving cavity b extend vertically, forming a synergistically reinforced longitudinal through-structure. This allows the load at the tailgate hinge to be distributed across the vehicle body vertically rather than concentrated in a localized area, effectively improving the overall deformation resistance of the rear of the vehicle. Especially under complex conditions such as off-road driving and heavy loads, this reduces the risk of body torsion and cracking.

[0045] Among them, see Figures 4 to 7 The outer panel 102 and the inner panel 101 of the D-pillar are welded together, providing good connection strength and overall integrity. Along the left-right direction of the vehicle, the side of the tailgate hinge mounting plate 3 closest to the vehicle interior is welded together with the inner panel 101 and the outer panel 102 of the D-pillar. This creates a direct force transmission channel between the side taillight mounting plate 2 and the D-pillar 1, which helps to enhance the overall integrity of the rear structure of the vehicle body and improve the force transmission effect.

[0046] For the specific arrangement of the second fastener 7, please refer to... Figures 4 to 6 The second fastener 7 needs to pass through the side wall of the receiving cavity b to connect the support 4 and the reinforcing member 5. The corresponding side wall of the receiving cavity b is the outer plate 102 of the D-pillar. The outer plate 102 of the D-pillar is provided with a clearance hole for the second fastener 7 to pass through.

[0047] Reference Figures 4 to 9 Based on the D-pillar 1, which includes an inner D-pillar panel 101 and an outer D-pillar panel 102, in some exemplary embodiments, the tailgate hinge includes an upper tailgate hinge and a lower tailgate hinge, which are arranged vertically along the vehicle's vertical direction. The support member 4 includes an upper support member 401 corresponding to the upper tailgate hinge and a lower support member 402 corresponding to the lower tailgate hinge. The reinforcement member 5 includes an upper reinforcement member 501 corresponding to the upper support member 401 and a lower reinforcement member 502 corresponding to the lower support member 402.

[0048] This arrangement divides the tailgate hinge into an upper tailgate hinge and a lower tailgate hinge, with corresponding upper support member 401, lower support member 402, upper reinforcement member 501, and lower reinforcement member 502. This arrangement can distribute the load of the tailgate to the two tailgate hinges. The upper support member 401 and the upper reinforcement member 501 bear the load transmitted by the upper tailgate hinge, while the lower support member 402 and the lower reinforcement member 502 bear the load transmitted by the lower tailgate hinge. This allows the weight of the tailgate and the impact force of opening and closing to be transmitted to the vehicle body through two independent paths, providing better support for the tailgate, further reducing stress concentration on the vehicle body, and improving the structural fatigue resistance.

[0049] Based on the support member 4, which includes the upper support member 401 and the lower support member 402, and referring to Figures 10 to 15 In some exemplary embodiments, sleeves 8 are embedded in both the upper support member 401 and the lower support member 402, and both the upper support member 401 and the lower support member 402 are connected to the first fastener 6 via the sleeves 8. The upper support member 401 is mounted on the rear door hinge mounting plate 3 via the third fastener 9, and the lower support member 402 is mounted on the rear door hinge mounting plate 3 via the fourth fastener 10.

[0050] As described above, sleeves 8 are embedded in the upper support 401 and the lower support 402. Sleeves 8 can enhance the connection strength between the support 4 and the first fastener 6. Even if the support 4 is made of lightweight material and its strength is limited, the connection between the first fastener 6 and the support 4 can be ensured by using sleeves 8 made of higher strength material. Sleeves 8 are responsible for connecting with the first fastener 6 to prevent damage to the support 4, which is beneficial to the lightweight design of the vehicle body.

[0051] Regarding the material selection for the support member 4 and the sleeve 8, for example, the upper support member 401 and the lower support member 402 can both be made of aluminum alloy casting into an integral structure, and the sleeve 8 can be made of steel. Aluminum alloy has a low density, which helps to reduce the weight of the support member 4, while the steel sleeve 8 can reinforce the connection position between the support member 4 and the first fastener 6, so as to achieve the purpose of lightweight design without excessively reducing the structural strength of the support member 4.

[0052] Of course, if the support component 4 is made of aluminum alloy, and the support component 4 is connected to other components using fasteners, a sleeve 8 can be installed at the connection point. That is, a sleeve 8 can be installed at the connection points between the support component 4 and the first fastener 6 and the second fastener 7 to ensure the connection strength between the support component 4 and the first fastener 6 and the second fastener 7. When the first fastener 6 and the second fastener 7 are bolts, the sleeve 8 adopts a cylindrical structure with internal threads, which can be used in good cooperation with the first fastener 6 and the second fastener 7.

[0053] Secondly, regarding the connection between the upper support 401 and the rear door hinge mounting plate 3, refer to... Figure 14 The third fastener 9 can be in the form of a bolt pair or a rivet. Preferably, the third fastener 9 is in the form of a bolt pair. A bolt hole can be provided on the upper support 401 along the vertical direction. After the bolt passes through the rear door hinge mounting plate 3 from the rear side, it passes through the bolt hole and connects to the nut. After the bolt and nut are tightened in place, the upper support 401 can be fixedly installed on the rear door hinge mounting plate 3.

[0054] Similarly, for the connection between the lower support 402 and the rear door hinge mounting plate 3, refer to... Figure 14The fourth fastener 10 can be in the form of a bolt pair or a rivet. Preferably, the fourth fastener 10 is in the form of a bolt pair. A bolt hole can be provided on the lower support member 402 along the vertical direction. After the bolt passes through the rear door hinge mounting plate 3 from the rear side, it passes through the bolt hole and connects to the nut. After the bolt and nut are tightened in place, the lower support member 402 can be fixedly installed on the rear door hinge mounting plate 3.

[0055] For the specific structure of the upper support member 401, please refer to... Figure 4 , Figure 5 , Figure 10 and Figure 11 In some exemplary embodiments, the upper support member 401 includes an upper support plate 4011 and a first support column 4012 integrally formed with the upper support plate 4011. The rear end of the first support column 4012 abuts against the rear door hinge mounting plate 3 and is used to connect with the first fastener 6, and the front end of the first support column 4012 abuts against the D-pillar outer plate 102 and is used to connect with the second fastener 7.

[0056] This arrangement, with the first support column 4012 set up and the upper support member 401 pressed against the rear door hinge mounting plate 3 and the outer panel 102 of the D-pillar, can form a through force transmission channel in the front-rear direction of the whole vehicle, improve the force transmission effect, and reduce stress concentration.

[0057] Specifically, a through hole structure can be provided on the first support column 4012, and a sleeve 8 can be provided at each end of the hole structure. The first fastener 6 and the second fastener 7 are respectively connected to the two sleeves 8. In this way, the structure of the upper support member 401 can be more compact, and the force transmission path between the side taillight mounting plate 2 and the outer plate of the D-pillar 102 can be shorter.

[0058] Preferably, two first support columns 4012 can be provided on the upper support member 401. The two first support columns 4012 are arranged at intervals in the vertical direction, and each support column is provided with two of the above-mentioned hole structures, and sleeves 8 are arranged at both ends of the hole structures. In this way, the upper support member 401 can be connected to the upper hinge of the rear door through four first fasteners 6, and the upper support member 401 can be connected to the upper reinforcing member 501 through four second fasteners 7, which has a high connection strength.

[0059] Furthermore, the connection between the upper support member 401 and the outer panel 102 of the D-pillar is relatively high. To reinforce this connection, a second support column 4013 can be installed on the upper support member 401. The second support column 4013 extends forward of the vehicle and abuts against the outer panel 102 of the D-pillar. The second support column 4013 and the outer panel 102 of the D-pillar are connected by a fifth fastener 11, achieving targeted reinforcement between the upper support member 401 and the outer panel 102 of the D-pillar. The fifth fastener 11 can be in the form of a bolt or a rivet. Preferably, the fifth fastener 11 is a bolt, which passes through the front side of the outer panel 102 of the D-pillar and is screwed onto the upper support member 401. A sleeve 8 is embedded in the upper support member 401 at a corresponding position and is threadedly connected to the bolt. The outer panel 102 of the D-pillar is provided with a clearance hole to avoid the bolt.

[0060] Furthermore, refer to Figure 10 and Figure 11 To enhance the structural strength of the upper support member 401, in some exemplary embodiments, at least one of the front and rear sides of the upper support member 401 is provided with a reinforcing rib along the longitudinal direction of the vehicle. Providing a reinforcing rib on at least one side of the upper support member 401 in the longitudinal direction can enhance the structural strength of the upper support member 401, disperse stress on the upper support member 401, and enable the upper support member 401 to achieve higher load-bearing capacity with less material, which is beneficial for lightweight vehicle body design.

[0061] Specifically, reinforcing ribs can be provided on both the front and rear sides of the upper support member 401. These reinforcing ribs include a first reinforcing rib 403 extending along the left-right direction of the vehicle and a second reinforcing rib 404 extending along the up-down direction of the vehicle. On both sides of the upper support member 401, the first reinforcing ribs 403 and the second reinforcing ribs 404 can form a mesh-like reinforcing structure, connecting each of the first support columns 4012 and the second support columns 4013, thereby enhancing the structural strength of the upper support member 401. Columnar reinforcing structures can also be arranged on the first reinforcing ribs 403 and the second reinforcing ribs 404, extending along the front-back direction to further enhance the reinforcing effect of the ribs.

[0062] For the specific structure of the lower support member 402, please refer to... Figure 6 , Figure 7 , Figure 8 , Figure 12 and Figure 13In some exemplary embodiments, the lower support member 402 includes a lower support plate 4021, and a front support column 4022 and a rear support column 4023 integrally formed with the lower support plate 4021. The front support column 4022 and the rear support column 4023 are respectively located on the front and rear sides of the lower support plate 4021, and the front support column 4022 and the rear support column 4023 are staggered. The rear end of the rear support column 4023 abuts against the rear door hinge mounting plate 3 and is used to connect with the first fastener 6, and the front end of the front support column 4022 abuts against the D-pillar outer plate 102 and is used to connect with the second fastener 7.

[0063] With this design, the front support pillar 4022 and the rear support pillar 4023 are integrated with the lower support plate 4021, resulting in high structural strength. The staggered arrangement of the front support pillar 4022 and the rear support pillar 4023 allows for more flexible placement of the lower support component 402, making it easier to adapt to the shape of the vehicle body structure.

[0064] Preferably, two front support pillars 4022 and two rear support pillars 4023 can be provided on the lower support plate 4021. Each front support pillar 4022 has two sleeves 8, allowing the lower support plate 4021 to be connected to the lower reinforcing member 502 via four second fasteners 7. Each rear support pillar 4023 has two sleeves 8, allowing the lower support plate 4021 to be connected to the lower hinge of the tailgate via four first fasteners 6. This ensures a more stable connection of the lower support plate 4021 to the rear structure of the vehicle body, improving force transmission.

[0065] Furthermore, refer to Figure 12 and Figure 13 To enhance the structural strength of the lower support member 402, in some exemplary embodiments, a reinforcing rib is provided on at least one side of the front and rear sides of the lower support member 402 along the longitudinal direction of the vehicle. Providing a reinforcing rib on at least one side of the lower support member 402 in the longitudinal direction can enhance the structural strength of the lower support member 402, disperse stress on the lower support member 402, and enable the lower support member 402 to achieve higher load-bearing capacity with less material, which is beneficial for lightweight vehicle body design.

[0066] Specifically, first reinforcing ribs 403 and second reinforcing ribs 404 can be provided on both the front and rear sides of the lower support member 402. Similarly, on both sides of the upper support member 401, the first reinforcing ribs 403 and second reinforcing ribs 404 can form a mesh-like reinforcing structure and connect each front support column 4022 and rear support column 4023. This allows the stress at the front support column 4022 and rear support column 4023 to be dispersed through the reinforcing ribs, which helps to enhance the structural strength of the lower support member 402. Columnar reinforcing structures can also be arranged on the first reinforcing ribs 403 and second reinforcing ribs 404. The columnar reinforcing structures extend along the front-rear direction, which can further enhance the reinforcing effect of the reinforcing ribs.

[0067] Regarding the structure of the upper reinforcing member 501, refer to... Figure 4 , Figure 5 , Figure 9 and Figure 16 As shown, in some exemplary embodiments, the upper reinforcing member 501 includes an upper reinforcing plate 5011 that is fitted and connected to the outer panel 102 of the D-pillar, and a plurality of first legs 5012 disposed on the upper reinforcing plate 5011. The upper reinforcing plate 5011 covers the upper and lower mounting positions of the upper hinge of the tailgate. The plurality of first legs 5012 are arranged circumferentially around the upper reinforcing plate 5011, and the upper reinforcing member 501 is welded to the inner panel 101 of the D-pillar through the plurality of first legs 5012.

[0068] In this way, by setting an upper reinforcing plate 5011 that fits against the outer panel 102 of the D-pillar and a first leg 5012 that is welded to the inner panel 101 of the D-pillar, and aligning the upper reinforcing plate 5011 with the upper and lower mounting positions covering the upper hinge of the tailgate, the inner panel 101 of the D-pillar can cooperate with the outer panel 102 of the D-pillar to bear the force when the outer panel 102 of the D-pillar is subjected to the force transmitted from the upper hinge of the tailgate. This is beneficial to improving the load-bearing effect of the D-pillar 1 on the tailgate of the vehicle.

[0069] For example, the first support leg 5012 can be positioned on the side of the upper reinforcing plate 5011 facing the front of the vehicle, with four legs spaced apart. The sidewall of each first support leg 5012 that contacts the inner D-pillar panel 101 conforms to the shape of the inner D-pillar panel 101. This increases the effective force transmission area between the first support leg 5012 and the inner D-pillar panel 101, improving the force transmission effect, and also facilitating welding operations between the first support leg 5012 and the inner D-pillar panel 101. The upper reinforcing plate 5011 is provided with clearance holes to avoid the second fastener 7.

[0070] Regarding the structure of the lower reinforcing member 502, refer to... Figure 6 , Figure 9 and Figure 17 As shown, in some exemplary embodiments, the lower reinforcement 502 includes a lower reinforcement plate 5021 that is fitted and connected to the outer panel 102 of the D-pillar, and a plurality of second legs 5022 disposed on the lower reinforcement plate 5021. The lower reinforcement plate 5021 covers the upper mounting position of the lower hinge of the tailgate. The plurality of second legs 5022 are arranged circumferentially around the lower reinforcement plate 5021, and the lower reinforcement 502 is welded to the inner panel 101 of the D-pillar via the plurality of second legs 5022.

[0071] With the above arrangement, a lower reinforcing plate 5021 is installed that fits against the outer panel 102 of the D-pillar, and a second leg 5022 is welded to the inner panel 101 of the D-pillar. The lower reinforcing plate 5021 is aligned with the upper mounting position covering the lower hinge of the tailgate. This allows the inner panel 101 of the D-pillar to work together with the outer panel 102 of the D-pillar to bear the force when the outer panel 102 of the D-pillar is subjected to the force transmitted from the lower hinge of the tailgate. This helps to improve the load-bearing effect of the D-pillar on the tailgate of the vehicle.

[0072] For example, the second support leg 5022 can be positioned on the side of the lower reinforcing plate 5021 facing the front of the vehicle, with four legs spaced apart. The sidewall of each second support leg 5022 that contacts the inner D-pillar panel 101 conforms to the shape of the inner D-pillar panel 101. This increases the effective force transmission area between the second support leg 5022 and the inner D-pillar panel 101, improving the force transmission effect, and also facilitating welding operations between the second support leg 5022 and the inner D-pillar panel 101. The lower reinforcing plate 5021 is provided with clearance holes to avoid the second fastener 7.

[0073] Additionally, the taillight mounting area c on the side taillight mounting plate 2 is as follows: Figure 1 As shown, there are two locations on the right side of the side taillight mounting plate 2, spaced vertically. In practice, the arrangement point of the taillight hinge can be flexibly selected according to the installation position of the taillight.

[0074] It is worth noting that, regarding the rear structure of the vehicle body in this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 17 As shown, it may include, for example, a side taillight mounting plate 2, a tailgate hinge mounting plate 3, a support member 4, an outer D-pillar panel 102, a reinforcing member 5, and an inner D-pillar panel 101 arranged sequentially along the vehicle from rear to front.

[0075] The outer panel 102 and the inner panel 101 of the D-pillar are welded together. The cavity a between the two is provided with an upper reinforcing member 501 and a lower reinforcing member 502, both of which are welded to the inner panel 101 of the D-pillar.

[0076] Among them, the side taillight mounting plate 2 and the outer D-pillar plate 102 are welded together, and the cavity b between them is provided with an upper support 401, a lower support 402 and a rear door hinge mounting plate 3.

[0077] The rear door hinge is connected to the support member 4 by bolts passing through the side taillight mounting plate 2 and the rear door hinge mounting plate 3. The support member 4 and the reinforcing member 5 are connected by bolts passing through the outer panel 102 of the D pillar.

[0078] The upper support 401 and the lower support 402 are both mounted on the rear door hinge mounting plate 3 by bolts.

[0079] In the preferred embodiment of the above-described rear structure of the vehicle body, the specific configuration and arrangement of the side taillight mounting plate 2, the tailgate hinge mounting plate 3, the support member 4, the outer D-pillar panel 102, the reinforcing member 5, and the inner D-pillar panel 101, etc., can still be referred to in the descriptions of the above-described exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the side taillight mounting plate 2, the tailgate hinge mounting plate 3, the support member 4, the outer D-pillar panel 102, the reinforcing member 5, and the inner D-pillar panel 101, etc., can also be referred to in the descriptions of the above-described exemplary embodiments.

[0080] The rear structure of the vehicle body in this embodiment adopts the above design. By connecting the D-pillar 1 with the side taillight mounting plate 2, a box-shaped frame structure with a receiving cavity b can be formed. The reinforcing member 5, the supporting member 4 and the tailgate hinge mounting plate 3 are arranged to create an effective force transmission path between the D-pillar 1 and the tailgate hinge. The position where the rear structure of the vehicle body connects to the tailgate hinge is less likely to experience excessive local stress concentration, which is beneficial to improving the support capacity of the rear structure of the vehicle body for the tailgate.

[0081] Meanwhile, the support component 4, the reinforcing component 5, and the tailgate hinge mounting plate 3 can reliably distribute the load, and the overall volume is small. The side taillight mounting plate 2 does not need to be specially thickened to increase strength to stably support the tailgate, which is conducive to the lightweight design of the vehicle.

[0082] An embodiment of the second aspect of this application provides a vehicle that includes the rear body structure of the embodiment of the first aspect of this application.

[0083] In this embodiment, the vehicle utilizes the aforementioned rear body structure to effectively transfer the force at the connection between the tailgate hinge and the vehicle body to the forward D-pillar 1. This prevents excessive local stress concentration at the location where the tailgate hinge connects to the rear of the vehicle body. The support member 4, the reinforcement member 5, and the tailgate hinge mounting plate 3 can accurately distribute the load, and their overall volume is small. This eliminates the need for the side taillight mounting plate 2 to be specially thickened to increase strength, which is beneficial for the vehicle's lightweight design and improves the vehicle's range performance.

[0084] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A rear structure of a vehicle body, characterized in that: It includes a D-pillar with a cavity (a), a side taillight mounting plate (2) that surrounds the D-pillar (1) to form a receiving cavity (b), and a rear door hinge mounting plate (3) disposed in the receiving cavity (b). Corresponding to the installation position of the rear door hinge, the receiving cavity (b) is provided with a support member (4), and the cavity (a) is provided with a reinforcing member (5); along the front-rear direction of the whole vehicle, the reinforcing member (5) and the support member (4) are arranged front and rear; The rear door hinge mounting plate (3) is attached to the front side of the side taillight mounting plate (2). The rear door hinge is connected to the support member (4) by a first fastener (6) passing through the side taillight mounting plate (2) and the rear door hinge mounting plate (3). The support member (4) and the reinforcing member (5) are connected by a second fastener (7) passing through the side wall of the receiving cavity (b).

2. The rear structure of the vehicle body according to claim 1, characterized in that: The D-pillar (1) includes an inner panel (101) and an outer panel (102) that forms the cavity (a) together with the inner panel (101), the cavity (a) extending along the vertical direction of the vehicle. The side taillight mounting plate (2) and the outer D-pillar plate (102) enclose the receiving cavity (b), which extends along the vertical direction of the vehicle.

3. The rear structure of the vehicle body according to claim 2, characterized in that: The tailgate hinge includes an upper tailgate hinge and a lower tailgate hinge, which are arranged vertically along the vehicle's vertical direction. The support member (4) includes an upper support member (401) arranged corresponding to the upper hinge of the rear door, and a lower support member (402) arranged corresponding to the lower hinge of the rear door. The reinforcing member (5) includes an upper reinforcing member (501) arranged corresponding to the upper support member (401) and a lower reinforcing member (502) arranged corresponding to the lower support member (402).

4. The rear structure of the vehicle body according to claim 3, characterized in that: Both the upper support member (401) and the lower support member (402) are fitted with sleeves (8), and both the upper support member (401) and the lower support member (402) are connected to the first fastener (6) through the sleeves (8); The upper support member (401) is installed on the rear door hinge mounting plate (3) by the third fastener (9), and the lower support member (402) is installed on the rear door hinge mounting plate (3) by the fourth fastener (10).

5. The rear structure of the vehicle body according to claim 3, characterized in that: The upper support member (401) includes an upper support plate (4011) and a first support column (4012) integrally formed with the upper support plate (4011). The rear end of the first support column (4012) abuts against the rear door hinge mounting plate (3) and is used to connect with the first fastener (6). The front end of the first support column (4012) abuts against the outer plate of the D-pillar (102) and is used to connect with the second fastener (7).

6. The rear structure of the vehicle body according to claim 3, characterized in that: The upper reinforcing member (501) includes an upper reinforcing plate (5011) that is attached to and connected to the outer panel (102) of the D-pillar, and a plurality of first legs (5012) provided on the upper reinforcing plate (5011); the upper reinforcing plate (5011) covers the upper and lower mounting positions of the upper hinge of the rear door. Multiple first legs (5012) are arranged circumferentially around the upper reinforcing plate (5011), and the upper reinforcing member (501) is welded to the inner plate of the D-pillar (101) through the multiple first legs (5012).

7. The rear structure of the vehicle body according to claim 3, characterized in that: The lower support member (402) includes a lower support plate (4021), and a front support column (4022) and a rear support column (4023) integrally formed with the lower support plate (4021). The front support column (4022) and the rear support column (4023) are respectively placed on the front and rear sides of the lower support plate (4021), and the front support column (4022) and the rear support column (4023) are staggered. The rear end of the rear support column (4023) abuts against the rear door hinge mounting plate (3) and is used to connect with the first fastener (6). The front end of the front support column (4022) abuts against the outer plate of the D-pillar (102) and is used to connect with the second fastener (7).

8. The rear structure of the vehicle body according to claim 3, characterized in that: The lower reinforcing member (502) includes a lower reinforcing plate (5021) that is attached to and connected to the outer panel (102) of the D-pillar, and a plurality of second legs (5022) provided on the lower reinforcing plate (5021); the lower reinforcing plate (5021) covers the upper mounting position of the lower hinge of the rear door. Multiple second legs (5022) are arranged circumferentially around the lower reinforcing plate (5021), and the lower reinforcing member (502) is welded to the inner plate of the D-pillar (101) through the multiple second legs (5022).

9. The rear structure of the vehicle body according to any one of claims 1-8, characterized in that: Along the front-rear direction of the vehicle, at least one of the front and rear sides of the support member (4) is provided with a reinforcing rib.

10. A vehicle, characterized in that: The vehicle includes the rear body structure as described in any one of claims 1-9.

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