CN220785367U - Car body tail end structure and car - Google Patents

Abstract

The application relates to the technical field of automobiles, in particular to a tail end structure of an automobile body and an automobile. The application aims to solve the problems that an existing towing hook structure is complex in installation mode and poor in installation reliability. According to the vehicle body tail end structure, the rear anti-collision beam assembly comprises the rear anti-collision beam body, the first stiffening beam and the mounting pipe, and the rear anti-collision beam body is fixedly connected with the rear longitudinal beam assembly through the first stiffening beam, so that the structural strength and stability of the vehicle body tail end structure are improved; the first reinforcement beam is provided with a first mounting hole so that the mounting pipe is fixed in the first mounting hole; the towing hook is in threaded connection with the mounting pipe, so that the towing hook is mounted, the mounting mode is simple, and the operation is convenient; the installation pipe is fixed in on the first stiffening beam, and first stiffening beam and back crashproof roof beam body and back longeron assembly are equal fixed connection, and towing pintle atress can be through installation pipe and first stiffening beam transmission to back crashproof roof beam body and back longeron assembly on, does benefit to stability and the reliability that improves the towing pintle installation.

Description

Car body tail end structure and car

Technical Field

The application relates to the technical field of automobiles, in particular to a tail end structure of an automobile body and an automobile.

Background

Some vehicle tails are provided with towing hook structures to pull other vehicles, the reliability of the towing hook structure installation being off weight.

In the related art, the towing hook structure needs to be mounted at the tail end of the automobile through a plurality of bolts, so that the mounting mode is complex, and the mounting reliability is poor.

Disclosure of Invention

The application provides a tail end structure of vehicle body and car to solve current towing pintle structure mounting means complicacy, the poor technical problem of installation reliability.

In order to solve the technical problems, the application adopts the following technical scheme:

a first aspect of the present application provides a vehicle body tail end structure comprising:

the rear anti-collision beam assembly comprises a rear anti-collision beam body, a first stiffening beam and a mounting pipe, wherein the rear end of the first stiffening beam is fixedly connected with the rear anti-collision beam body, a first mounting hole is formed in the first stiffening beam, and the first mounting hole is located at the bottom of the rear anti-collision beam body; the mounting pipe is fixed in the first mounting hole, and the inner wall of the mounting pipe is provided with threads;

the rear longitudinal beam assembly is fixed at the front end of the first reinforcement beam;

and the towing hook is in threaded connection with the inner wall of the mounting pipe.

Compared with the prior art, the vehicle tail end structure provided by the first aspect of the application has the following advantages:

the vehicle body tail end structure comprises a rear anti-collision beam assembly, a rear longitudinal beam assembly and a towing hook, wherein the rear anti-collision beam assembly comprises a rear anti-collision beam body, a first stiffening beam and an installation tube, the rear anti-collision beam body is fixedly connected with the rear longitudinal beam assembly through the first stiffening beam, and the structural strength and the stability of the vehicle body tail end structure are improved; the first reinforcing beam is provided with a first mounting hole so that the mounting pipe is fixed in the first mounting hole, and the inner wall of the mounting pipe is provided with threads; the towing hook is in threaded connection with the inner wall of the mounting tube, so that the towing hook is mounted, the mounting mode is simple, and the operation is convenient; and the mounting pipe is fixed on the first stiffening beam, and the first stiffening beam is fixedly connected with the rear anti-collision beam body and the rear longitudinal beam assembly, and the stress of the towing pintle can be transferred to the rear anti-collision beam body and the rear longitudinal beam assembly through the mounting pipe and the first stiffening beam, so that the stability and the reliability of towing pintle installation are improved.

As an improvement of the vehicle body tail end structure, the first reinforcement beam is provided with a first cavity and a second cavity, the first cavity and the second cavity are arranged in parallel along the length direction of the rear anti-collision beam body, and the first cavity and the second cavity are provided with a rear cavity wall and a front cavity wall; the rear cavity wall of the first cavity and the rear cavity wall of the second cavity are fixedly connected with the rear anti-collision beam body, the front cavity wall of the second cavity is fixedly connected with the rear longitudinal beam assembly, the front cavity wall of the first cavity and the rear longitudinal beam assembly are provided with intervals, and the rear cavity wall of the first cavity is provided with the first mounting hole.

As an improvement of the vehicle body tail end structure, the front cavity wall of the first cavity is bent and extended forwards away from one end of the second cavity to form a connecting arm, and the connecting arm is bent and extended away from the second cavity to form a mounting plate; the mounting plate is fixedly connected with the rear longitudinal beam assembly.

As an improvement of the vehicle body tail end structure, the rear anti-collision beam assembly further comprises a first fastener; the mounting plate and the front cavity wall of the second cavity are fixedly connected with the rear longitudinal beam assembly through the first fastener; a first via hole is formed in the rear cavity wall of the second cavity at a position corresponding to the first fastening piece; and the rear cavity wall of the first cavity and the rear cavity wall of the second cavity are welded with the rear anti-collision beam body.

As an improvement of the vehicle body tail end structure, the front cavity wall of the second cavity is provided with a positioning hole, and the rear longitudinal beam assembly is provided with a positioning column which is matched with the positioning hole.

As an improvement of the vehicle body tail end structure, the vehicle body tail end structure further comprises a second reinforcing beam positioned below the rear anti-collision beam body, wherein the second reinforcing beam is provided with a third cavity; the second reinforcing beam is provided with a second mounting hole, the second mounting hole penetrates through the front cavity wall and the rear cavity wall of the third cavity, and the second mounting hole and the first mounting hole are coaxially arranged; the mounting tube is secured within the second mounting hole and the first mounting hole.

As an improvement of the vehicle body tail end structure, the mounting pipe is welded in the second mounting hole and the first mounting hole.

As an improvement of the vehicle body tail end structure, the rear longitudinal beam assembly comprises a rear longitudinal beam body, an end plate and a reinforcing member, wherein the end plate is fixedly connected with the front end of the first reinforcing beam, the end plate is fixed at the rear end of the rear longitudinal beam body, one end of the reinforcing member is fixed at the bottom end of the end plate, and the other end of the reinforcing member is fixedly connected with the rear longitudinal beam body.

As an improvement of the vehicle body tail end structure, the reinforcement comprises a first plate body and a second plate body which are connected, wherein the first plate body is welded with the bottom end of the end plate; the rear longitudinal beam assembly further comprises a second fastening piece, and the second plate body is fixedly connected with the rear longitudinal beam body through the second fastening piece.

A second aspect of the present application provides an automobile comprising a frame and the tail end structure of the first aspect, the frame being connected to a rear rail assembly of the tail end structure.

The second aspect of the present application provides an automobile, which also has the same advantages as the vehicle body tail end structure of the first aspect, since it includes the vehicle body tail end structure of the first aspect.

In addition to the technical problems, features constituting the technical solutions, and beneficial effects brought by the technical features of the technical solutions described above, other technical problems that the tail end structure of the vehicle body and the vehicle can solve, other technical features included in the technical solutions, and beneficial effects brought by the technical features provided by the application will be described in further detail in the detailed description of the embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments of the present application or the description of the prior art will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, these drawings and the written description are not intended to limit the scope of the inventive concepts of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by referring to the specific embodiments, and that other drawings may be obtained from these drawings without inventive effort to those skilled in the art.

Fig. 1 is a schematic structural view of a tail end structure of a vehicle body according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a tail end structure of a vehicle body provided in an embodiment of the present application;

FIG. 3 is a partial schematic view of a front view of a tail end structure of a vehicle body provided in an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a rear impact beam body provided in an embodiment of the present application;

FIG. 5 is a partial schematic view of an exploded view of a rear impact beam assembly provided in an embodiment of the present application;

FIG. 6 is a top view of a first reinforcement beam provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a rear rail assembly according to an embodiment of the present disclosure;

fig. 8 is a second schematic structural view of the rear rail assembly according to the embodiment of the present disclosure;

fig. 9 is an exploded view of a rear rail assembly provided in an embodiment of the present application.

Reference numerals illustrate:

100: a rear bumper beam assembly; 110: a rear impact beam body; 111: a second via; 120: a first reinforcing beam; 121: a first mounting hole; 122: a first cavity; 1221: a front cavity wall; 1222: a rear cavity wall; 123: a second cavity; 1231: a front cavity wall; 1232: a rear cavity wall; 1233: a first via; 1234: a third via; 124: a connecting arm; 125: a mounting plate; 130: installing a pipe; 140: a first fastener; 150: a second reinforcing beam; 151: a second mounting hole;

200: a rear rail assembly; 210: a rear side member body; 220: an end plate; 221: positioning columns; 222: a first threaded hole; 223: a first press-riveting nut; 230: a reinforcing member; 231: a first plate body; 232: a second plate body; 233: a connecting plate body; 240: a second fastener; 250: a nutplate; 251: a second press-riveting nut; 252: a third fastener;

300: a towing hook; 310: a connecting column; 320: and a ring body.

Detailed Description

Some vehicle tails are provided with towing hook structures to pull other vehicles, the reliability of the towing hook structure installation being off weight. In the related art, the towing hook structure needs to be mounted at the tail end of the automobile through a plurality of bolts, so that the mounting mode is complex, and the mounting reliability is poor. Because the towing hook is lower in position, the disassembling and assembling operation of the bolt is difficult, and the production efficiency is affected. In addition, the new energy automobile's lightweight design is to closing weight, and current tow hook mounting means is sheet metal construction, and weight is big, is unfavorable for new energy automobile's range promotion.

In view of this, the embodiment of the application provides a vehicle tail end structure, so that the towing hook is directly in threaded installation, the installation mode is simple, and the reliability is high; the tail end structure of the vehicle body adopts an aluminum alloy structural design, is light and is favorable for improving the endurance mileage of the new energy vehicle.

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

Fig. 1 is a schematic structural view of a tail end structure of a vehicle body according to an embodiment of the present disclosure; FIG. 2 is an exploded view of a tail end structure of a vehicle body provided in an embodiment of the present application; FIG. 3 is a partial schematic view of a front view of a tail end structure of a vehicle body provided in an embodiment of the present application; FIG. 4 is a schematic cross-sectional view of a rear impact beam body provided in an embodiment of the present application; fig. 5 is a partial schematic view of an exploded view of a rear impact beam assembly provided in an embodiment of the present application.

Referring to fig. 1, an embodiment of the present application provides a vehicle body tail end structure, which includes: rear bumper beam assembly 100, rear rail assembly 200, and tow hook 300.

Wherein the rear impact beam assembly 100 extends in a lateral direction, the rear side member assembly 200 extends in a longitudinal direction, and the rear side member assembly 200 is located at a front end of the rear impact beam assembly 100. The rear side member assembly 200 is provided with two, two at both ends of the rear impact beam assembly 100, respectively. The term "azimuth" as used herein is defined based on the direction of the vehicle. In connection with fig. 1, the X-axis direction refers to the longitudinal direction of the car, wherein the positive X-axis direction points to the forward direction of the car, the Y-axis direction refers to the transverse direction of the car, and the Z-axis direction refers to the height direction of the car.

Referring to fig. 2 and 3, the rear impact beam assembly 100 of the embodiment of the present application includes a rear impact beam body 110, a first reinforcement beam 120, and a mounting tube 130. The rear anti-collision beam body 110 can be an aluminum alloy extrusion profile, which is beneficial to improving the light weight of the rear end structure of the vehicle body. The rear impact beam body 110 is provided with a cavity to improve structural strength of the rear impact beam body. Referring to fig. 4, the rear impact beam body 110 has a cross section "ri" forming two cavities. The rear bumper beam body 110 is formed by integral extrusion with a thickness of 3mm to 5 mm. The rear anti-collision beam body 110 of the embodiment of the application is good in light-weight effect and good in collision performance.

The rear end of the first reinforcement beam 120 is fixedly connected with the rear anti-collision beam body 110, and illustratively, the rear end of the first reinforcement beam 120 is welded with the rear anti-collision beam body 110, and the connection mode is stable and reliable, and is beneficial to improving the structural strength of the rear anti-collision beam assembly 100. Optionally, the rear end of the first reinforcement beam 120 is welded with the rear impact beam body 110 by MIG welding.

Referring to fig. 5, a first mounting hole 121 is provided on the first reinforcement beam 120, and the first mounting hole 121 may be a circular hole. The mounting tube 130 is fixed in the first mounting hole 121, and in the embodiment of the present application, the mounting tube 130 is welded in the first mounting hole 121. Alternatively, the mounting tube 130 is soldered into the first mounting hole 121 by MIG soldering.

The first stiffening beam 120 is an aluminum alloy extrusion profile, and the mounting tube 130 is an aluminum alloy forging forming piece, so that the arrangement is beneficial to the light weight of the rear end structure of the vehicle body and the improvement of the collision performance of the rear end structure of the vehicle body.

In the embodiment of the present application, the first mounting hole 121 is located at the bottom of the rear impact beam body 110, so that the mounting tube 130 is located at the bottom of the rear impact beam body 110, and the towing hook 300 is prevented from being mounted to interfere with the rear impact beam body 110.

The inner wall of the installation tube 130 has threads, and the tow hook 300 of the present embodiment is threadedly coupled with the inner wall of the installation tube 130. Specifically, referring to fig. 2, the towing hook 300 includes an integrally formed connection cylinder 310 and a ring body 320, the connection cylinder 310 is in threaded connection with the installation tube 130, specifically, the installation tube 130 is provided with an internal thread, the connection cylinder 310 is provided with an external thread, and the installation tube 130 is sleeved on the outer side of the connection cylinder 310 and is in threaded connection with the connection cylinder 310; the ring 320 is adapted to be coupled to a traction device of a traction rope.

Alternatively, in some implementations, the towing hook 300 is provided with an internal thread, and the outer circumference of the installation tube 130 is provided with an external thread, and the towing hook 300 is sleeved on the outer side of the installation tube 130 and is in threaded connection with the installation tube 130.

The rear girder assembly 200 of the present embodiment is fixed at the front end of the first stiffening girder 120, so, the rear anti-collision girder body 110 is connected with the rear girder assembly 200 through the first stiffening girder 120, and the towing pintle 300 is fixed on the first stiffening girder 120 through the mounting tube 130, the stress of the towing pintle 300 can be transferred to the rear girder assembly 200 through the first stiffening girder 120, and the structure is favorable for improving the maintenance of the towing pintle 300 in a stable state as desired.

Therefore, in the vehicle body tail end structure provided by the embodiment of the application, the rear anti-collision beam assembly 100 comprises the rear anti-collision beam body 110, the first stiffening beam 120 and the mounting tube 130, wherein the rear anti-collision beam body 110 is fixedly connected with the rear longitudinal beam assembly 200 through the first stiffening beam 120, so that the structural strength and stability of the vehicle body tail end structure are improved; and, the first reinforcement beam 120 is provided with a first mounting hole 121 such that the mounting pipe 130 is fixed in the first mounting hole 121; the towing hook 300 is in threaded connection with the mounting pipe 130, so that the towing hook 300 is mounted, the mounting mode is simple, and the operation is convenient; and, the installation pipe 130 is fixed on the first stiffening beam 120, and the first stiffening beam 120 is fixedly connected with the rear bumper beam body 110 and the rear longitudinal beam assembly 200, and the stress of the towing hook 300 can be transferred to the rear bumper beam body 110 and the rear longitudinal beam assembly 200 through the installation pipe 130 and the first stiffening beam 120, so that the stability and the reliability of the installation of the towing hook 300 can be improved.

In this embodiment of the present application, the first stiffening beam 120 is provided with the cavity, and for the aluminium alloy plate structure of individual layer, the first stiffening beam 120 structural strength who is provided with the cavity is higher, does benefit to and compromise lightweight and high structural strength simultaneously. The chambers may be arranged in various manners, for example, the first reinforcement beam 120 is vertically provided with one chamber, and for example, the first reinforcement beam 120 is laterally provided with one chamber; of course, the first reinforcement beam 120 may also be provided with a plurality of chambers.

The specific structure of the first reinforcement beam 120 in the embodiment of the present application is described below with reference to fig. 6, where fig. 6 is a top view of the first reinforcement beam provided in the embodiment of the present application.

As shown in fig. 6, the first reinforcement beam 120 of the embodiment of the present application is provided with a first cavity 122 and a second cavity 123, and the first cavity 122 and the second cavity 123 extend in the vertical direction. The first cavity 122 and the second cavity 123 are arranged in parallel along the length direction of the rear anti-collision beam body 110, the first cavity 122 and the second cavity 123 are both provided with a rear cavity wall and a front cavity wall, the first cavity 122 further comprises a left cavity wall positioned at one side deviating from the second cavity 123, the second cavity 123 further comprises a right cavity wall positioned at one side deviating from the first cavity 122, and the first cavity 122 and the second cavity 123 share one cavity wall.

The rear cavity wall 1222 of the first cavity 122 and the rear cavity wall 1232 of the second cavity 123 are in the same plane, and the rear cavity wall 1222 of the first cavity 122 and the rear cavity wall 1232 of the second cavity 123 are fixedly connected with the rear impact beam body 110. Optionally, the rear cavity wall 1222 of the first cavity 122 and the rear cavity wall 1232 of the second cavity 123 are connected with the rear bumper beam body 110 by MIG welding to form an integral structure, which is beneficial to improving the strength of the tail end structure of the vehicle body.

The front cavity wall 1231 of the second cavity 123 is fixedly connected with the rear longitudinal beam assembly 200, and the rear cavity wall 1222 of the first cavity 122 is provided with the first mounting hole 121, so that the position on the first reinforcing beam 120 connected with the rear longitudinal beam assembly 200 and the position connected with the mounting tube 130 are staggered, so as to avoid mutual interference.

In addition, the front cavity wall 1221 of the first cavity 122 is spaced from the rear longitudinal beam assembly 200, so that when the front cavity wall 1221 of the first cavity 122 contacts the rear longitudinal beam assembly 200, processing errors and the like can be avoided from affecting the connection between the front cavity wall 1231 of the second cavity 123 and the rear longitudinal beam assembly 200, and when the front cavity wall 1231 of the second cavity 123 is fixedly connected with the rear longitudinal beam assembly 200, a cavity is formed between the front cavity wall 1221 of the first cavity 122 and the rear longitudinal beam assembly 200, which is beneficial to further improving the rigidity and the structural strength of the tail end structure of the vehicle body.

With continued reference to fig. 6, the front cavity wall 1221 of the first cavity 122 extends with a forward bend away from the end of the second cavity 123 to form the connecting arm 124; alternatively, the left cavity wall of the first cavity 122 extends forward to form the connecting arm 124. Optionally, the connecting arm 124 is perpendicular to the front cavity wall 1221 of the first cavity 122.

The connecting arm 124 is bent and extended away from the second cavity 123 to form a mounting plate 125; the mounting plate 125 is fixedly coupled to the rear side rail assembly 200 to improve the stability of the connection of the first reinforcement beam 120 to the rear side rail assembly 200.

Optionally, the mounting plate 125 is located in the same plane as the front cavity wall 1231 of the second cavity 123, and is conveniently and simultaneously fixedly connected to the rear rail assembly 200. Optionally, the front cavity wall 1231 of the mounting plate 125 and the second cavity 123 are connected to the rear rail assembly 200 in the same manner, which is beneficial to improving the convenience of assembling the tail end structure of the vehicle body.

In some of these possible implementations, in conjunction with fig. 2, 3, and 5, the rear impact beam assembly 100 further includes a first fastener 140, which first fastener 140 may be a screw or bolt, or the like. The front cavity wall 1231 of the second cavity 123 and the mounting plate 125 are fixedly coupled to the rear rail assembly 200 by the first fastener 140.

Specifically, the mounting plate 125 is provided with a first connecting hole, the rear rail assembly 200 is provided with a first threaded hole, and the first fastener 140 passes through the first connecting hole and is in threaded connection with the first threaded hole. In the embodiment of the present application, at least a portion of the mounting plate 125 is opposite to the rear impact beam body 110, and when the first connection hole is opposite to the rear impact beam body 110, the rear impact beam body 110 is provided with the second via hole 111, so that the first fastener 140 passes through the second via hole 111 to connect the mounting plate 125 and the rear longitudinal beam assembly 200. The second via 111 may be a circular hole or other shaped hole as long as the second via 111 is sized to receive an operating tool to couple the first fastener 140 to the mounting plate 125 and the rear rail assembly 200.

As shown in fig. 2, the mounting plate 125 is provided with two first connection holes in the height direction, the upper first connection holes being opposite to the rear impact beam body 110, and the rear impact beam body 110 is provided with second through holes 111; the lower first connection hole is located below the rear impact beam body 110. So set up, do benefit to the stability that improves mounting panel 125 and rear rail assembly 200 are connected.

The front cavity wall 1231 of the second cavity 123 is provided with a second connecting hole, and the first fastener 140 is threaded through the second connecting hole to a first threaded hole provided in the rear rail assembly 200. The rear cavity wall 1232 of the second cavity 123 is provided with a first via 1233 corresponding to the position of the first fastener 140, and the first fastener 140 passes through the first via 1233 to connect the mounting plate 125 and the rear side member assembly 200. The first via 1233 may be a circular hole or other shaped hole as long as the first via 1233 is sized to receive an operating tool to couple the first fastener 140 to the front cavity wall 1231 of the second cavity 123 and the rear rail assembly 200.

Thus, the first reinforcement beam 120 in the embodiment of the present application is fixedly connected with the rear longitudinal beam assembly 200 through two positions of the mounting plate 125 and the front cavity wall 1231 of the second cavity 123, and the connection is stable and reliable; and, the location of the first fasteners 140 on the mounting plate 125 and the location of the first fasteners 140 on the front cavity wall 1231 of the second cavity 123 are arranged in a triangle, which ensures the stability of the connection of the first reinforcement beam 120 with the rear side rail assembly 200 while using fewer first fasteners 140.

The front cavity wall 1231 of the second cavity 123 is provided with a positioning hole, and the rear side member assembly 200 is provided with a positioning post 221, and the positioning post 221 is matched with the positioning hole, so that initial positioning is provided for mounting the first fastener 140, and convenience in connection of the first reinforcement beam 120 and the rear side member assembly 200 is improved. Wherein, a third via hole 1234 opposite to the positioning hole is disposed on the rear cavity wall 1232 of the second cavity 123, so as to facilitate the observation of the corresponding situation between the positioning post 221 and the positioning hole.

With continued reference to fig. 2, 3 and 5, the tail end structure of the vehicle body in the embodiment of the present application further includes a second reinforcement beam 150 located below the rear bumper beam body 110, where the second reinforcement beam 150 has a third cavity, and optionally, the second reinforcement beam 150 is an extruded aluminum profile, the cross section of the second reinforcement beam 150 is shaped like a "mouth", the thickness of the second reinforcement beam 150 is 4 mm-6 mm, and the second reinforcement beam 150 is integrally extruded; by the arrangement, the weight reduction and the collision performance of the tail end structure of the vehicle body are facilitated, and the structural strength of the second reinforcing beam 150 is also facilitated to be ensured.

Optionally, the second reinforcement beam 150 is welded with the first reinforcement beam 120, which is beneficial to improving the reliability of the installation of the second reinforcement beam 150.

The second reinforcement beam 150 is provided with a second mounting hole 151, the second mounting hole 151 penetrates through the front cavity wall and the rear cavity wall of the third cavity, and the second mounting hole 151 is coaxially arranged with the first mounting hole 121; the mounting tube 130 is fixed in the second mounting hole 151 and the first mounting hole 121, and the mounting tube 130 is welded in the second mounting hole 151 and the first mounting hole 121 by MIG welding.

According to the embodiment of the application, the second reinforcement beam 150 is added at the rear end of the first reinforcement beam 120 so as to fixedly install the pipe 130, thereby being beneficial to further improving the reliability and stability of the installation pipe 130 and further improving the reliability and stability of the installation of the towing hook 300.

With continued reference to fig. 1 and 2, the rear impact beam assembly 100 of the present embodiment further includes a third reinforcement beam that is fixed to the other end of the rear impact beam body 110, for example, the left end of the rear impact beam body 110 when the first reinforcement beam 120 is fixed to the right end of the rear impact beam body 110. The third reinforcement beam has the same structure as the first reinforcement beam 120, except that the third reinforcement beam is not provided with the first mounting hole. So set up, the both ends of back crashproof roof beam body 110 all pass through stiffening beam and back longeron assembly 200 fixed connection, do benefit to further improvement automobile body tail end structure's structural strength and anticollision performance.

The structure and function of the rear rail assembly according to the embodiment of the present application will be described in detail with reference to fig. 7 to 9, where fig. 7 is a schematic structural diagram of the rear rail assembly provided in the embodiment of the present application; fig. 8 is a second schematic structural view of the rear rail assembly according to the embodiment of the present disclosure; fig. 9 is an exploded view of a rear rail assembly provided in an embodiment of the present application.

Referring to fig. 7 and 8, the rear rail assembly 200 includes a rear rail body 210, an end plate 220, and a reinforcement 230, wherein the rear rail body 210 extends longitudinally, and a cross section of the rear rail body 210 may be in a "ri" shape, which is beneficial to the lightweight arrangement of the tail end structure of the vehicle body.

The end plate 220 may be an aluminum alloy plate having a thickness of 5mm to 7mm. The end plate 220 is fixed to the rear end of the rear rail body 210, and optionally, the end plate 220 and the rear rail body 210 are integrally fixed by MIG welding of aluminum alloy, which is advantageous for improving the structural strength of the rear rail assembly 200. The end plate 220 is fixedly coupled to the front end of the first reinforcement beam 120, thereby achieving a fixed connection of the first reinforcement beam 120 to the rear side member assembly 200.

The end plate 220 has opposite first and second surfaces, the first surface of the end plate 220 facing the first reinforcement beam 120 and the second surface of the end plate 220 facing the rear rail body 210. The first surface of the end plate 220 is provided with positioning posts 221 for mating with positioning holes provided on the first reinforcement beam 120. The edge of the end plate 220 protrudes out of the rear girder body 210, a through hole is formed in the edge of the end plate 220 protruding out of the rear girder body 210, a first press-riveting nut 223 is arranged on the second surface of the edge of the end plate 220 protruding out of the rear girder body 210, a first threaded hole 222 of the first press-riveting nut 223 is opposite to the through hole, and the first threaded hole 222 is used for being in threaded connection with the first fastening piece 140, so that the first reinforcement girder 120 and the end plate 220 are fixedly connected through the first fastening piece 140. The first clinch nut 223 is located at an edge of the end plate 220 and is offset from the rear side member body 210, so that the first fastener 140 and the rear side member body 210 do not interfere with each other.

One end of the reinforcement 230 is fixed to the bottom end of the end plate 220, and the other end of the reinforcement 230 is fixedly coupled to the rear rail body 210, thereby improving the coupling strength of the end plate 220 and the rear rail body 210. Optionally, the reinforcement 230 is a thermoformed sheet with good strength properties.

Referring to fig. 8 and 9, the reinforcement 230 of the embodiment of the present application includes a first plate body 231 and a second plate body 232 connected to each other, the first plate body 231 is welded to the bottom end of the end plate 220, and illustratively, the first plate body 231 is integrally fixed to the bottom end of the end plate 220 by MIG welding; the rear rail assembly 200 further includes a second fastener 240, and the second plate 232 is fixedly coupled to the rear rail body 210 by the second fastener 240.

Wherein the end plate 220 is disposed perpendicular to the rear rail body 210, and thus, the first plate 231 and the second plate 232 are perpendicular to each other. In some embodiments, the first plate 231 and the second plate 232 are directly connected to form an L-shaped reinforcement 230. In other embodiments, the reinforcement member 230 further includes a connection plate 233, where the first plate 231 and the second plate 232 are connected by the connection plate 233, so that the reinforcement member 230 is not only beneficial to improving the structural strength of the reinforcement member 230, but also avoiding interference between the reinforcement member 230 and the vertical connection points of the end plate 220 and the rear rail body 210.

The rear rail assembly 200 of the present embodiment further includes a nutplate 250, the nutplate 250 being secured to the rear rail body 210 by a third fastener 252, and the nutplate 250 being located within the cavity of the rear rail body 210. Alternatively, the third fastener 252 may be a blind rivet. The nut plate 250 is provided with a second rivet nut 251, and the bottom walls of the second plate body 232 and the rear rail body 210 are respectively provided with a second connecting hole, and the second fastener 240 passes through the second connecting hole to be in threaded connection with the second rivet nut 251, thereby realizing the fixed connection between the end plate 220 and the rear rail body 210.

The embodiment of the application also provides an automobile, which comprises a frame and the automobile body tail end structure, wherein the frame is connected with the rear longitudinal beam assembly of the automobile body tail end structure. The structure, function and effect of the tail end structure of the vehicle body provided in this embodiment are the same as those of the above embodiment, and specific reference may be made to the above embodiment, and details thereof will not be repeated here.

The automobile provided in the embodiment of the present application also has the same advantages as those of the automobile body tail end structure of the above embodiment, since it includes the automobile body tail end structure of the above embodiment.

In the above description, descriptions of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A vehicle body tail end structure, characterized by comprising:

the rear anti-collision beam assembly comprises a rear anti-collision beam body, a first stiffening beam and a mounting pipe, wherein the rear end of the first stiffening beam is fixedly connected with the rear anti-collision beam body, a first mounting hole is formed in the first stiffening beam, and the first mounting hole is located at the bottom of the rear anti-collision beam body; the mounting pipe is fixed in the first mounting hole, and the inner wall of the mounting pipe is provided with threads;

the rear longitudinal beam assembly is fixed at the front end of the first reinforcement beam;

and the towing hook is in threaded connection with the inner wall of the mounting pipe.

2. The vehicle body tail end structure according to claim 1, wherein the first reinforcement beam is provided with a first cavity and a second cavity, the first cavity and the second cavity being juxtaposed along a length direction of the rear impact beam body, the first cavity and the second cavity each having a rear cavity wall and a front cavity wall;

the rear cavity wall of the first cavity and the rear cavity wall of the second cavity are fixedly connected with the rear anti-collision beam body, the front cavity wall of the second cavity is fixedly connected with the rear longitudinal beam assembly, the front cavity wall of the first cavity and the rear longitudinal beam assembly are provided with intervals, and the rear cavity wall of the first cavity is provided with the first mounting hole.

3. The tail end structure of claim 2, wherein a front cavity wall of the first cavity extends in a forward bend away from an end of the second cavity to form a connecting arm extending in a bend away from the second cavity to form a mounting plate; the mounting plate is fixedly connected with the rear longitudinal beam assembly.

4. The tail end structure of claim 3, wherein the rear impact beam assembly further comprises a first fastener; the mounting plate and the front cavity wall of the second cavity are fixedly connected with the rear longitudinal beam assembly through the first fastener; a first via hole is formed in the rear cavity wall of the second cavity at a position corresponding to the first fastening piece;

and the rear cavity wall of the first cavity and the rear cavity wall of the second cavity are welded with the rear anti-collision beam body.

5. The tail end structure of claim 2, wherein a front cavity wall of the second cavity is provided with a locating hole, and the rear rail assembly is provided with a locating post, the locating post being mated with the locating hole.

6. The vehicle body tail end structure of any of claims 1-5, further comprising a second reinforcement beam located below the rear impact beam body, the second reinforcement beam having a third cavity; the second reinforcing beam is provided with a second mounting hole, the second mounting hole penetrates through the front cavity wall and the rear cavity wall of the third cavity, and the second mounting hole and the first mounting hole are coaxially arranged; the mounting tube is secured within the second mounting hole and the first mounting hole.

7. The vehicle body tail end structure according to claim 6, wherein said mounting tube is welded within said second mounting hole and said first mounting hole.

8. The vehicle body tail end structure according to any one of claims 1 to 5, wherein the rear side member assembly includes a rear side member body, an end plate fixedly connected to a front end of the first reinforcement member, the end plate fixed to a rear end of the rear side member body, one end of the reinforcement member fixed to a bottom end of the end plate, and the other end of the reinforcement member fixedly connected to the rear side member body.

9. The tail end structure of claim 8, wherein the reinforcement includes first and second joined plates, the first plate being welded to the bottom end of the end plate;

the rear longitudinal beam assembly further comprises a second fastening piece, and the second plate body is fixedly connected with the rear longitudinal beam body through the second fastening piece.

10. An automobile comprising a frame and the tail end structure of any one of claims 1-9, said frame being connected to a rear rail assembly of said tail end structure.