Vehicle body rear lap joint structure and vehicle

Abstract

The utility model provides a vehicle body rear lap joint structure and a vehicle. The vehicle body rear lap joint structure comprises a lower longitudinal beam extending in the front-back direction of the vehicle; a rear wall outer panel extending in the left-right direction of the vehicle; the C column inner plate extends in the height direction of the vehicle, the C column inner plate is connected with the rear wall outer plate, and the bottom of the C column inner plate is connected with the lower longitudinal beam; the floor is located below the C column inner plate, one side of the floor is connected with the rear wall outer plate, the other side of the floor is connected with the lower longitudinal beam, and the floor comprises a corner part; the first reinforcing plate is connected with the corner portion of the floor in a sealed mode, the first reinforcing plate is connected with the rear wall outer plate and the lower longitudinal beam, and the top of the first reinforcing plate is connected with the bottom of the C column inner plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a rear body lap joint structure and a vehicle. BACKGROUND

[0002] With the development of the automobile industry, people's requirements for the comfort of commercial vehicles are further improved. In the related art, the rear part of the body-in-white has poor sealing performance, which leads to excessive noise in the passenger compartment and poor heat preservation effect, thereby affecting the vehicle experience of the people. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a rear body lap joint structure and a vehicle, aiming to improve the problem of poor sealing performance of the rear part of the body-in-white, thereby improving the vehicle experience of the people.

[0004] In a first aspect, the embodiments of the present application provide a rear body lap joint structure, comprising: a lower longitudinal beam extending in the front-rear direction of the vehicle; a rear wall outer plate extending in the left-right direction of the vehicle; a C-pillar inner plate extending in the height direction of the vehicle, the C-pillar inner plate being connected with the rear wall outer plate, and the bottom of the C-pillar inner plate being connected with the lower longitudinal beam; a floor plate located below the C-pillar inner plate, one side of the floor plate being connected with the rear wall outer plate, and the other side of the floor plate being connected with the lower longitudinal beam, the floor plate comprising a corner portion; and a first reinforcing plate being sealingly connected with the corner portion of the floor plate, the first reinforcing plate being connected with the rear wall outer plate and the lower longitudinal beam respectively, and the top of the first reinforcing plate being connected with the bottom of the C-pillar inner plate.

[0005] The present application is provided with a first reinforcing plate. First, the first reinforcing plate is connected with the rear wall outer plate, the corner portion and the lower longitudinal beam respectively, and at the same time, the top of the first reinforcing plate is also connected with the bottom of the C-pillar inner plate. In this way, the C-pillar inner plate, the first reinforcing plate, the rear wall outer plate, the lower longitudinal beam and the floor plate are connected at multiple points, and the C-pillar inner plate is extended and supported in the height direction of the vehicle through the first reinforcing plate, and external impact can be shared by the above-mentioned components. Therefore, the structural strength and impact resistance of the rear part of the body can be improved. Second, the first reinforcing plate is sealingly connected with the corner portion of the floor plate, that is, the first reinforcing plate has a mounting surface matched with the corner portion, and the first reinforcing plate is connected between the corner portion and the rear wall outer plate and the lower longitudinal beam, so as to block the gap between the corner portion and the rear wall outer plate and the lower longitudinal beam, and improve the sealing performance of the floor plate after assembly. By such arrangement, the sealing performance of the rear part of the body can be improved while ensuring the structural strength and impact resistance of the rear part of the body, thereby being conducive to improving the vehicle experience of the people. In addition, since the bottom of the C-pillar inner plate is extended and supported through the first reinforcing plate, compared with the C-pillar inner plate of the integral structure in the related art, the manufacturing cost of the C-pillar inner plate can be reduced and the processing efficiency can be improved.

[0006] In some embodiments, the floor includes a floor body, a first flange and a second flange connected to the floor body, the floor body is connected to the rear outer panel through the first flange, the floor body is connected to the lower longitudinal beam through the second flange, and the corner part is connected to the floor body and located between the first flange and the second flange.

[0007] The floor body is connected to the rear outer panel and the lower longitudinal beam through the first flange and the second flange respectively, thereby facilitating to improve the structural strength and stability among the three. Further, the corner part is located between the first flange and the second flange, which on one hand can improve the transition strength between the first flange and the second flange, and on the other hand is conducive to improving the connection convenience between the corner part and the first reinforcing plate.

[0008] In some embodiments, the rear part of the vehicle body lap joint structure further includes a second reinforcing plate extending in the left-right direction, the first reinforcing plate and the floor are both connected to the rear outer panel through the second reinforcing plate, and a side outer panel is arranged on a side of the lower longitudinal beam away from the floor, the side outer panel is connected to the rear outer panel, the lower longitudinal beam and the C-pillar inner panel, and part of the second reinforcing plate is located between the side outer panel and the rear outer panel.

[0009] In this way, on the one hand, the connection area between the floor and the rear outer panel, and between the first reinforcing plate and the rear outer panel can be further improved, thereby improving the connection strength and stability. On the other hand, a force transmission path among the side outer panel, the second reinforcing plate and the rear outer panel can be constructed, and the impact force received by the side outer panel can be dispersed to the entire rear part of the vehicle body lap joint structure through the second reinforcing plate, thereby also improving the stress concentration problem. Thus, the strength and impact resistance of the rear part of the vehicle body lap joint structure can be further improved.

[0010] In some embodiments, the second reinforcing plate includes a first body and a third flange connected to the first body, the rear outer panel includes a rear outer panel body and a fourth flange connected to the rear outer panel body, and the side outer panel includes a side outer panel body and a fifth flange connected to the side outer panel body; wherein the first body is connected to the rear outer panel body, part of the fifth flange is directly connected to the fourth flange, and the other part is connected to the fourth flange through the third flange.

[0011] In this way, first, the strength and impact resistance of the rear outer panel can be improved, second, the third flange can increase the connection points between the side outer panel and the rear outer panel, thereby further improving the connection strength and reliability between the side outer panel and the rear outer panel. Third, the width of the third flange will not be too large, thereby facilitating to save the material of the second reinforcing plate and reduce the cost while ensuring the connection strength and reliability.

[0012] In some embodiments, a first cavity is formed between the side outer plate and the lower longitudinal beam. The first cavity can buffer the impact force received by the side outer plate, thereby facilitating further improvement of the impact resistance of the rear portion of the vehicle body.

[0013] In some embodiments, a second cavity is formed between the rear outer plate, the side outer plate and the C-pillar inner plate. The second cavity can buffer the impact force received by the side outer plate and the rear outer plate, thereby facilitating further improvement of the impact resistance of the rear portion of the vehicle body.

[0014] In some embodiments, the lower longitudinal beam comprises a sixth flange and a seventh flange extending in the front-rear direction, the seventh flange being located below the sixth flange; the side outer plate comprises an eighth flange and a ninth flange located below the eighth flange, the eighth flange comprising a first section extending in the height direction of the vehicle and a second section extending in the front-rear direction of the vehicle, the ninth flange extending in the front-rear direction of the vehicle; the C-pillar inner plate is connected to the first section, the sixth flange is connected to the second section, and the seventh flange is connected to the ninth flange. Thereby, the convenience and stability of the connection between the C-pillar inner plate, the lower longitudinal beam and the side outer plate are facilitated.

[0015] In some embodiments, the lower longitudinal beam is recessed towards a side close to the floor, the lower longitudinal beam comprises a bottom wall and a first side wall and a second side wall connected to the bottom wall, the second side wall being located below the first side wall; the rear portion of the vehicle body further comprises a third reinforcing plate, the third reinforcing plate comprising a second body and a first bending portion, a second bending portion and a third bending portion connected to the second body; the second body is connected to the first body, the first bending portion is connected to a side surface of the first side wall close to the second side wall, the second bending portion is connected to a side surface of the bottom wall away from the floor, and the third bending portion is connected to a side surface of the second side wall close to the first side wall.

[0016] In this way, on the one hand, the second reinforcing plate can directly support the recessed structure of the lower longitudinal beam, thereby facilitating improvement of the strength and impact resistance of the lower longitudinal beam, and on the other hand, the connection strength and reliability between the various components of the rear portion of the vehicle body are further improved.

[0017] In some embodiments, the bottom of the C-pillar inner panel is connected to a side surface of the first side wall away from the second side wall, the floor is connected to a side surface of the bottom wall away from the side outer panel, and the first reinforcing plate is connected to both a side surface of the bottom wall away from the side outer panel and a side surface of the second side wall away from the first side wall. In this way, the connection strength and impact resistance between the components of the rear portion of the vehicle body are further improved.

[0018] In a second aspect, the embodiments of the present application provide a vehicle comprising the rear portion of the vehicle body lap joint structure. In this way, the sealing performance of the rear portion of the vehicle body is improved while ensuring the structural strength and impact resistance of the rear portion of the vehicle body, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle body of a vehicle according to an embodiment of the present application;

[0020] Figure 2 FIG. 2 is a structural schematic diagram of the vehicle body of the vehicle according to the embodiment of the present application from another perspective;

[0021] Figure 3 FIG. 3 is an enlarged structural schematic diagram of the position M in FIG. 1; Figure 2

[0022] Figure 4 FIG. 4 is a partial structural schematic diagram of the rear portion of the vehicle body lap joint structure according to an embodiment of the present application;

[0023] Figure 5 FIG. 5 is a structural schematic diagram of the first reinforcing plate and the floor according to an embodiment of the present application;

[0024] Figure 6 FIG. 6 is a partial exploded schematic diagram of the rear portion of the vehicle body lap joint structure according to an embodiment of the present application (without the third reinforcing plate);

[0025] Figure 7 FIG. 7 is a structural schematic diagram of the rear portion of the vehicle body lap joint structure according to an embodiment of the present application (without the side outer panel);

[0026] Figure 8 FIG. 8 is a structural schematic diagram of the first reinforcing plate, the second reinforcing plate, and the third reinforcing plate according to an embodiment of the present application.

[0027] The following is a description of the reference numerals in the drawings:

[0028] 1, vehicle;

[0029] 10, rear portion of the vehicle body lap joint structure;

[0030] ​100. lower longitudinal beam, 110. bottom wall, 120. first side wall, 130. second side wall, 140. sixth flange, 150. seventh flange;

[0031] 200. rear outer panel, 210. rear outer panel body, 220. fourth flange;

[0032] 300. C pillar inner panel;

[0033] 400. floor, 410. corner portion, 420. floor body, 430. first flange, 440. second flange;

[0034] 500. first reinforcement plate;

[0035] 600. second reinforcement plate, 610. first body, 620. third flange;

[0036] 700. side outer panel, 710. side outer panel body, 720. fifth flange, 730. eighth flange, 731. first section, 732. second section, 740. ninth flange;

[0037] 800. third reinforcement plate, 810. second body, 820. first bending portion, 830. second bending portion, 840. third bending portion. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0039] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0040] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the description of the application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0042] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a mediating element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a mediating element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0043] With the development of the automobile industry, people's requirements for the comfort of vehicles are further improved.

[0044] A commercial vehicle in the related art, the rear structure of the vehicle body includes a C-pillar inner panel, a rear wall outer panel, a lower longitudinal beam and a floor, the C-pillar inner panel extends to the bottom of the vehicle body in the height direction of the vehicle, one side of the C-pillar inner panel is connected with the lower longitudinal beam, and the other side is connected with the rear wall outer panel, and the floor is welded with the lower longitudinal beam, the rear wall outer panel and the C-pillar inner panel.

[0045] In the above structure, there is a large gap between the corner of the floor and the C-pillar inner panel, and only by means of glue coating, the gap cannot be completely sealed, so that the sealing performance of this part is poor, thereby causing the comfort of the vehicle to be insufficient, and affecting the use experience of the personnel.

[0046] Based on the above problems, the embodiments of the application provide a rear lap joint structure of a vehicle body, which aims to improve the poor sealing performance of the rear of the vehicle body, thereby improving the comfort of the vehicle and the use experience of the personnel.

[0047] As Figures 1 to 4As shown in the first aspect, the embodiments of the present application provide a rear body lap joint structure 10. The rear body lap joint structure 10 includes a lower longitudinal beam 100, a rear wall outer panel 200, a C-pillar inner panel 300, a floor panel 400, and a first reinforcing plate 500. The lower longitudinal beam 100 extends along the front-rear direction X of the vehicle, the rear wall outer panel 200 extends along the left-right direction Y of the vehicle, the C-pillar inner panel 300 extends along the height direction Z of the vehicle, the C-pillar inner panel 300 is connected to the rear wall outer panel 200, the bottom of the C-pillar inner panel 300 is connected to the lower longitudinal beam 100, the floor panel 400 is located below the C-pillar inner panel 300, one side of the floor panel 400 is connected to the rear wall outer panel 200, and the other side of the floor panel 400 is connected to the lower longitudinal beam 100, the floor panel 400 includes a corner portion 410, the first reinforcing plate 500 is sealingly connected to the corner portion 410 of the floor panel 400, the first reinforcing plate 500 is connected to the rear wall outer panel 200 and the lower longitudinal beam 100 respectively, and the top of the first reinforcing plate 500 is connected to the bottom of the C-pillar inner panel 300.

[0048] The lower longitudinal beam 100 refers to a metal structural member extending along the front-rear direction of the vehicle at the bottom of the vehicle body, the rear wall outer panel 200 refers to an outer covering panel member provided at the tail of the vehicle body, the C-pillar inner panel 300 refers to a panel member provided at the C-pillar position of the vehicle body and close to the side of the interior space of the vehicle, and the floor panel 400 refers to a panel member provided at the bottom of the vehicle body and carrying passengers and objects.

[0049] In the present application, the bottom of the C-pillar inner panel 300 extends to the lower longitudinal beam 100, the floor panel 400 is located below the C-pillar inner panel 300, and the floor panel 400 is not directly connected to the C-pillar inner panel 300. The C-pillar inner panel 300 is connected to the rear wall outer panel 200 and the lower longitudinal beam 100 respectively, and at the same time, the floor panel 400 is connected to the rear wall outer panel 200 and the lower longitudinal beam 100 respectively, thereby forming an overall lap joint structure.

[0050] In the related art, the C-pillar inner panel is an integral structure and directly extends to the bottom of the vehicle body. Due to the influence of assembly errors and machining errors, after the floor panel is installed, there is a large assembly gap between the corner portion and the rear wall outer panel, the C-pillar inner panel, and the lower longitudinal beam, resulting in poor sealing performance of the rear part of the vehicle body.

[0051] Therefore, the present application further provides the first reinforcing plate 500. First, as Figure 4 As shown, the first reinforcing plate 500 is connected to the rear wall outer panel 200, the corner portion 410, and the lower longitudinal beam 100 respectively, and at the same time, the top of the first reinforcing plate 500 is also connected to the bottom of the C-pillar inner panel 300. In this way, the C-pillar inner panel 300, the first reinforcing plate 500, the rear wall outer panel 200, the lower longitudinal beam 100, and the C-pillar inner panel 300 are connected at multiple points, and the C-pillar inner panel 300 is extended and supported in the height direction Z of the vehicle through the first reinforcing plate 500, and external impact can be shared by the above-mentioned components. Therefore, the structural strength and impact resistance of the rear part of the vehicle body can be improved. Second, as Figure 4and Figure 5 As shown in FIG. 4, the first reinforcing plate 500 is sealingly connected with the corner portion 410 of the floor 400, that is, the first reinforcing plate 500 has a mounting surface matched with the corner portion 410, and the first reinforcing plate 500 is connected between the corner portion 410 and the rear outer panel 200 and the lower longitudinal beam 100, so as to block the gap between the corner portion 410 and the rear outer panel 200 and the lower longitudinal beam 100, and improve the sealing performance of the corner portion 410 after the floor 400 is assembled. In this way, the sealing performance of the rear portion of the vehicle body can be improved while the structural strength and impact resistance of the rear portion of the vehicle body are ensured, thereby facilitating the improvement of the driving experience of the user.

[0052] In addition, since the bottom of the C-pillar inner panel 300 is extended and supported by the first reinforcing plate 500, compared with the C-pillar inner panel with an integrated structure in the related art, the manufacturing cost of the C-pillar inner panel 300 can be reduced, and the processing efficiency can be improved.

[0053] In some embodiments, as shown in FIG. 4, the floor 400 includes a floor body 420, and a first flange 430 and a second flange 440 connected with the floor body 420. The floor body 420 is connected with the rear outer panel 200 through the first flange 430, the floor body 420 is connected with the lower longitudinal beam 100 through the second flange 440, and the corner portion 410 is connected with the floor body 420 and located between the first flange 430 and the second flange 440. Figure 5

[0054] The specific structure of the floor 400 is provided in the embodiment. The floor body 420 is used to bear pressure and loads in the longitudinal direction (front and back) and the transverse direction (left and right). The floor body 420 is connected with the rear outer panel 200 and the lower longitudinal beam 100 through the first flange 430 and the second flange 440 respectively, so as to facilitate the improvement of the structural strength and stability among the three. Further, the corner portion 410 is located between the first flange 430 and the second flange 440, which can improve the transition strength between the first flange 430 and the second flange 440, and facilitate the connection convenience between the corner portion 410 and the first reinforcing plate 500.

[0055] It can be understood that the corner portion 410 can also be in the form of a flange. In this way, the connection convenience of the corner portion 410 and the first reinforcing plate 500 can be improved, and the connection strength between the first reinforcing plate 500 and the floor 400 can also be improved.

[0056] Optionally, the corner portion 410 and the first reinforcing plate 500 can be sealingly connected by welding, bonding or other ways, which are not limited in the present application.

[0057] In some embodiments, as shown in FIG. 4, the floor 400 includes a floor body 420, and a first flange 430 and a second flange 440 connected with the floor body 420. The floor body 420 is connected with the rear outer panel 200 through the first flange 430, the floor body 420 is connected with the lower longitudinal beam 100 through the second flange 440, and the corner portion 410 is connected with the floor body 420 and located between the first flange 430 and the second flange 440. Figure 2 , Figure 3 ,​Figure 4 and Figure 6 As shown in FIG. 1, the rear body joint structure 10 further comprises a second reinforcing plate 600 and a side outer plate 700. The second reinforcing plate 600 extends along the left-right direction Y, and the first reinforcing plate 500 and the floor 400 are both connected to the rear outer plate 200 through the second reinforcing plate 600. The side outer plate 700 is arranged on the side of the lower longitudinal beam 100 away from the floor 400, and the side outer plate 700 is connected to the rear outer plate 200, the lower longitudinal beam 100 and the C-pillar inner plate 300. Part of the second reinforcing plate 600 is located between the side outer plate 700 and the rear outer plate 200.

[0058] In the embodiment, the side outer plate 700 refers to an outer covering plate member of the rear side of the body. The side outer plate 700 is connected to the rear outer plate 200, the lower longitudinal beam 100 and the C-pillar inner plate 300, thereby further improving the strength and impact resistance of the rear body joint structure 10.

[0059] The extending direction of the second reinforcing plate 600 is the same as the extending direction of the rear outer plate 200. The first reinforcing plate 500 and the floor 400 are both connected to the rear outer plate 200 through the second reinforcing plate 600, that is, part of the second reinforcing plate 600 is located between the first reinforcing plate 500 and the rear outer plate 200, and part of the second reinforcing plate 600 is located between the floor 400 and the rear outer plate 200. In this way, the connecting area between the floor 400 and the rear outer plate 200 and between the first reinforcing plate 500 and the rear outer plate 200 can be further improved, thereby improving the connecting strength and stability. In addition, part of the second reinforcing plate 600 is located between the side outer plate 700 and the rear outer plate 200, and a force transmission path between the side outer plate 700, the second reinforcing plate 600 and the rear outer plate 200 can be constructed. The impact force received by the side outer plate 700 can be dispersed to the entire rear body joint structure 10 through the second reinforcing plate 600, thereby also improving the stress concentration problem. Therefore, the strength and impact resistance of the rear body joint structure 10 can be further improved.

[0060] In some embodiments, as shown in FIGS. 1-2, Figure 4 , Figure 6 The second reinforcing plate 600 comprises a first body 610 and a third flange 620 connected to the first body 610, the rear outer plate 200 comprises a rear outer plate body 210 and a fourth flange 220 connected to the rear outer plate body 210, and the side outer plate 700 comprises a side outer plate body 710 and a fifth flange 720 connected to the side outer plate body 710. The first body 610 is connected to the rear outer plate body 210, part of the fifth flange 720 is directly connected to the fourth flange 220, and the other part is connected to the fourth flange 220 through the third flange 620.

[0061] The embodiment provides a specific structure of connection of the second reinforcing plate 600 with the rear wall outer plate 200 and the side wall outer plate 700. The first body 610 of the second reinforcing plate 600 is connected with the rear wall outer plate body 210, thereby facilitating improvement of the strength and impact resistance of the rear wall outer plate 200. Further, a part of the fifth flange 720 of the side wall outer plate 700 is directly connected with the fourth flange 220, and another part is connected with the fourth flange 220 through the third flange 620. That is, the second reinforcing plate 600 is located between the side wall outer plate 700 and the rear wall outer plate 200. In this way, on one hand, the third flange 620 can increase the connection point between the side wall outer plate 700 and the rear wall outer plate 200, thereby facilitating further improvement of the connection strength and reliability between the side wall outer plate 700 and the rear wall outer plate 200. On the other hand, the width of the third flange 620 will not be too large, thereby facilitating saving of the material of the second reinforcing plate 600 and reducing the cost under the condition of ensuring the connection strength and reliability.

[0062] In some embodiments, as shown in Figure 4 , a first cavity S1 is formed between the side wall outer plate 700 and the lower longitudinal beam 100. The first cavity S1 can buffer the impact force received by the side wall outer plate 700, thereby facilitating further improvement of the impact resistance of the rear part lap joint structure 10 of the vehicle body.

[0063] In some embodiments, as shown in Figure 4 , a second cavity S2 is formed between the rear wall outer plate 200, the side wall outer plate 700 and the C pillar inner plate 300. The second cavity S2 can buffer the impact force received by the side wall outer plate 700 and the rear wall outer plate 200, thereby facilitating further improvement of the impact resistance of the rear part lap joint structure 10 of the vehicle body.

[0064] In some embodiments, as shown in Figure 1 and Figure 6 , the lower longitudinal beam 100 is recessed towards a side close to the floor 400, the lower longitudinal beam 100 comprises a bottom wall 110 and a first side wall 120 and a second side wall 130 connected with the bottom wall 110, and the second side wall 130 is located below the first side wall 120. In this way, a part of the first cavity S1 can be formed in the lower longitudinal beam 100.

[0065] Further, as shown in Figure 2 , Figure 3 and Figure 6As shown, the lower longitudinal beam 100 includes a sixth flange 140 and a seventh flange 150 extending in the front-rear direction X. The seventh flange 150 is located below the sixth flange 140. The side panel 700 includes an eighth flange 730 and a ninth flange 740 located below the eighth flange 730. The eighth flange 730 includes a first section 731 extending in the height direction Z of the vehicle and a second section 732 extending in the front-rear direction X of the vehicle. The ninth flange 740 extends in the front-rear direction X of the vehicle. The C-pillar inner panel 300 is connected to the first section 731, the sixth flange 140 is connected to the second section 732, and the seventh flange 150 is connected to the ninth flange 740.

[0066] This embodiment presents a specific structure for the connection between the side outer panel 700, the lower longitudinal beam 100, and the C-pillar inner panel 300. For example... Figure 2 and Figure 3 As shown, the side panel 700 includes an eighth flange 730 and a ninth flange 740. The eighth flange 730 is divided into a first section 731 and a second section 732, and the two sections extend in different directions. The C-pillar inner panel 300 is connected to the first section 731, the sixth flange 140 of the lower longitudinal beam 100 is connected to the second section 732, and the seventh flange 150 of the lower longitudinal beam 100 is connected to the ninth flange 740 of the side panel 700. This improves the convenience and stability of the connection between the C-pillar inner panel 300, the lower longitudinal beam 100, and the side panel 700.

[0067] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the rear body overlap structure 10 also includes a third reinforcing plate 800. The third reinforcing plate 800 includes a second body 810 and a first bent portion 820, a second bent portion 830 and a third bent portion 840 connected to the second body 810. The second body 810 is connected to the first body 610. The first bent portion 820 is connected to the side surface of the first side wall 120 near the second side wall 130. The second bent portion 830 is connected to the side surface of the bottom wall 110 away from the floor 400. The third bent portion 840 is connected to the side surface of the second side wall 130 near the first side wall 120.

[0068] In the embodiment, the rear body lap joint structure 10 further comprises a third reinforcing plate 800. The second body 810 of the third reinforcing plate 800 is connected with the first body 610 of the second reinforcing plate 600, and the first bending part 820 of the third reinforcing plate 800 is connected with the first side wall 120, the second bending part 830 is connected with the bottom wall 110, and the third bending part 840 is connected with the second side wall 130, that is, the three bending parts of the third reinforcing plate 800 are connected with the three inner walls of the groove of the lower longitudinal beam 100 respectively. In this way, on the one hand, the second reinforcing plate 800 can directly support the groove structure of the lower longitudinal beam 100, thereby facilitating to improve the strength and impact resistance of the lower longitudinal beam 100, and on the other hand, the connection strength and reliability between the components of the rear body lap joint structure 10 can be further improved.

[0069] In addition, as Figure 4 indicated and referring to Figure 8 , the rear body structure formed by the rear outer panel 200, the side outer panel 700, the lower longitudinal beam 100, the floor 400, the C-pillar inner panel 300, and the first reinforcing plate 500, the second reinforcing plate 600 and the third reinforcing plate 800 connected with each other can also reduce the number of reinforcing plates used alone in the related art, thereby facilitating to realize the lightweight of the whole vehicle while ensuring the structural strength, and reducing the cost of the whole vehicle.

[0070] Further, the first reinforcing plate 500, the second reinforcing plate 600 and the third reinforcing plate 800 are connected with each other, and can be used as a modular reinforcing assembly for connecting the rear outer panel 200, the side outer panel 700, the lower longitudinal beam 100, the floor 400, the C-pillar inner panel 300 and the like. Therefore, the universalization and standardization of the first reinforcing plate 500, the second reinforcing plate 600 and the third reinforcing plate 800 can be realized, so as to meet the use requirements of different height platforms of the cab, and further facilitate to reduce the development cycle of the whole vehicle.

[0071] In some embodiments, as Figure 4 indicated, the bottom of the C-pillar inner panel 300 is connected with the side surface of the first side wall 120 away from the second side wall 130, the floor 400 is connected with the side surface of the bottom wall 110 away from the side outer panel 700, and the first reinforcing plate 500 is connected with the side surface of the bottom wall 110 away from the side outer panel 700 and the side surface of the second side wall 130 away from the first side wall 120. In this way, the connection strength and impact resistance between the components of the rear body lap joint structure 10 can be further improved.

[0072] As Figure 1 and Figure 2As shown in the second aspect, the embodiment of the present application provides a vehicle 1 comprising the rear body lap joint structure 10 of the first aspect. The vehicle can be a commercial new energy heavy truck, a fuel heavy truck, etc., and the present application does not limit this.

[0073] The vehicle 1 of the present application uses the rear body lap joint structure 10 of the first aspect, so that the sealing performance of the rear body can be improved while ensuring the structural strength and impact resistance of the rear body, thereby facilitating the improvement of the vehicle experience of the personnel.

[0074] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vehicle body rear lap joint structure characterized by comprising: The vehicle body rear lap joint structure comprises: a lower longitudinal beam extending in a front-rear direction of the vehicle; a rear outer panel extending in a left-right direction of the vehicle; a C-pillar inner panel extending in a height direction of the vehicle, the C-pillar inner panel being connected with the rear outer panel, a bottom of the C-pillar inner panel being connected with the lower longitudinal beam; a floor panel located below the C-pillar inner panel, one side of the floor panel being connected with the rear outer panel and the other side of the floor panel being connected with the lower longitudinal beam, the floor panel comprising a corner portion; a first reinforcing plate being sealingly connected with the corner portion of the floor panel, the first reinforcing plate being connected with the rear outer panel and the lower longitudinal beam respectively, a top of the first reinforcing plate being connected with the bottom of the C-pillar inner panel. The floor panel comprises a floor panel body, a first flange and a second flange connected with the floor panel body, the floor panel body being connected with the rear outer panel through the first flange, the floor panel body being connected with the lower longitudinal beam through the second flange, the corner portion being connected with the floor panel body and located between the first flange and the second flange.

2. The vehicle body rear lap joint structure according to claim 1, characterized by The vehicle body rear lap joint structure further comprises:

3. The vehicle body rear lap joint structure according to claim 1, characterized by a second reinforcing plate extending in the left-right direction of the vehicle, the first reinforcing plate and the floor panel being connected with the rear outer panel through the second reinforcing plate; a side outer panel provided on a side of the lower longitudinal beam away from the floor panel, the side outer panel being connected with the rear outer panel, the lower longitudinal beam and the C-pillar inner panel, a part of the second reinforcing plate being located between the side outer panel and the rear outer panel. The second reinforcing plate comprises a first body and a third flange connected with the first body, the rear outer panel comprises a rear outer panel body and a fourth flange connected with the rear outer panel body, the side outer panel comprises a side outer panel body and a fifth flange connected with the side outer panel body; 4. The vehicle body rear lap joint structure according to claim 3, characterized by wherein the first body is connected with the rear outer panel body, a part of the fifth flange is directly connected with the fourth flange, and the other part of the fifth flange is connected with the fourth flange through the third flange. A first cavity is formed between the side outer panel and the lower longitudinal beam.

5. The vehicle body rear lap joint structure according to claim 3, characterized by A second cavity is formed between the rear outer panel, the side outer panel and the C-pillar inner panel.

6. The vehicle body rear lap joint structure according to claim 3, characterized by The lower longitudinal beam comprises a sixth flange and a seventh flange extending in the front-rear direction of the vehicle, the seventh flange being located below the sixth flange; 7. The vehicle body rear lap joint structure according to claim 3, characterized by The side outer panel comprises an eighth flange and a ninth flange located below the eighth flange, the eighth flange comprising a first section extending in the height direction of the vehicle and a second section extending in the front-rear direction of the vehicle, the ninth flange extending in the front-rear direction of the vehicle; The C-pillar inner panel is connected with the first section, the sixth flange is connected with the second section, and the seventh flange is connected with the ninth flange. The lower longitudinal beam is recessed towards a side close to the floor panel, the lower longitudinal beam comprises a bottom wall and a first side wall and a second side wall connected with the bottom wall, the second side wall being located below the first side wall; 8. The vehicle body rear lap joint structure according to claim 3, characterized by The vehicle body rear lap joint structure further comprises a third reinforcing plate, the third reinforcing plate comprises a second body and a first bending portion, a second bending portion and a third bending portion connected with the second body; ​ The second body is connected with the second reinforcing plate, the first bending part is connected with the side surface of the second side wall close to the first side wall, the second bending part is connected with the side surface of the bottom wall away from the floor, and the third bending part is connected with the side surface of the second side wall close to the first side wall.

9. The vehicle body rear lap joint structure according to claim 8, characterized by The bottom of the C-pillar inner panel is connected with the side surface of the first side wall away from the second side wall, the floor is connected with the side surface of the bottom wall away from the outer side wall, and the first reinforcing plate is connected with the side surface of the bottom wall away from the outer side wall and the side surface of the second side wall away from the first side wall.

10. A vehicle characterized by comprising: A vehicle body rear lap joint structure comprising the vehicle body rear lap joint structure according to any one of claims 1 to 9.

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