阅读说明：本技术 一种整体式尾梁总成 (Integral tail beam assembly ) 是由 刘振华 杨书丛 汪进 陈辉 张龙 马宇 花鑫 程大双 姜雪峰 牟雪婷 郝丽娜 于 2021-09-13 设计创作，主要内容包括：本发明涉及侧围纵梁领域,具体来说是一种整体式尾梁总成,包括尾梁本体,所述尾梁本体包括尾梁板,所述尾梁板连接有后围板；所述尾梁板与后围板为一体化结构；所述尾梁本体周边设有装配连接部。本发明公开了一种整体式尾梁总成,本发明把尾梁板与后围板做成整体式结构；也就是本发明公开的尾梁总成相当于整合了传统的汽车尾梁和上围板,可以减少模具的投入,极大的降低汽车生产成本。(The invention relates to the field of side wall longitudinal beams, in particular to an integral tail beam assembly, which comprises a tail beam body, wherein the tail beam body comprises a tail beam plate, and the tail beam plate is connected with a back panel; the tail beam plate and the back panel are of an integrated structure; the periphery of the tail beam body is provided with an assembling connection part. The invention discloses an integral type tail beam assembly, which is characterized in that a tail beam plate and a back panel are made into an integral structure; namely, the tail beam assembly disclosed by the invention is equivalent to the integration of the traditional automobile tail beam and the upper coaming, so that the investment of a mould can be reduced, and the production cost of the automobile is greatly reduced.)

1. An integral tail beam assembly is characterized by comprising a tail beam body, wherein the tail beam body comprises a tail beam plate, and the tail beam plate is connected with a rear coaming; the tail beam plate and the back panel are of an integrated structure; the periphery of the tail beam body is provided with an assembling connection part.

2. The integrated tail beam assembly according to claim 1, wherein a mounting bracket is arranged on the inner side of the tail beam plate, the mounting bracket comprises a frame body, and a connecting buckle is arranged on the frame body; the frame body comprises an installation flitch, and a convex strip is arranged on the installation flitch; the mounting flitch is provided with a material reducing sink groove, and the material reducing sink groove extends from the mounting flitch to the inside of the protruding strip; the connecting buckle is arranged on the protruding strip.

3. The integral tail beam assembly as claimed in claim 2, wherein a positioning portion is provided at an edge of the mounting attachment plate, the positioning portion includes a clamping block provided on the tail beam plate and a clamping groove provided on the mounting attachment plate, the clamping block is connected with the clamping groove; the mounting flitch is connected with the tail beam plate in a welding mode.

4. The integrated tail beam assembly of claim 1, wherein the tail beam body further comprises a transition plate, the transition plate is connected with the tail beam plate and the back panel respectively, and the transition plate, the tail beam plate and the back panel are of an integrated structure.

5. The integrated tail beam assembly of claim 4, wherein the lower end of the tail beam plate is connected with the upper end of the back panel, and the rear ends of the tail beam plate and the back panel are connected with the transition plate; and the tail beam plate and the back panel enclose a rear side frame structure of the automobile triangular window.

6. The integrated tail boom assembly of claim 4, wherein a wrapping flange is provided at an edge of the tail boom body.

7. The integral tail boom assembly of claim 4, wherein a launder shield is attached to the tail of the tail boom body; the tail beam body is connected with the launder guard plate through the guard plate transition plate.

8. The integral tail boom assembly of claim 7, wherein the launder shield comprises a longitudinal plate and a transverse plate, the longitudinal plate is connected to the tail boom body, and the transverse plate is arranged at one end of the longitudinal plate away from the tail boom body; the launder guard plate is connected with the car body metal plate through the transverse plate.

9. The integral tail boom assembly of claim 1, wherein a positioning sink is provided at an end of the longitudinal plate remote from the transverse plate; the positioning sink groove is connected with the wrapping flanging on the tail beam body; the depth of the positioning sink groove is the same as the thickness of the wrapping flanging.

10. The integral tail boom assembly of claim 7, wherein the tail boom body is connected to the launder shield by a welded inner panel; the welding inner plate comprises a welding plate, and the welding plate is connected with the launder guard plate through a screw.

Technical Field

The invention relates to the field of side wall longitudinal beams, in particular to an integral tail beam assembly.

Background

With the transitional use of the current energy and the reduction of the oil storage, the current electric vehicle is the trend of the current development, and the electric vehicle gradually becomes a transportation tool for consumers in urban areas.

The electric automobile body structure comprises a side wall assembly, wherein the side wall assembly is mainly an automobile body side surface exterior trim part structure, and the tail part of the traditional side wall assembly is formed by sequentially connecting and assembling a plurality of single plates; although the rear tail beam structure in the traditional side wall can be normally used, the assembly process is inevitably increased because the plate is large in type, and meanwhile, a die is needed during the production of one plate, so that the production cost of the die is greatly increased; in addition, although the tail beam assembly formed by splicing a plurality of plates can be normally used, the assembly clearance is large, wind is easy to exist in the clearance, and the running resistance of the automobile is increased; meanwhile, the increase of assembly gaps enables the automobile production calibration process to be large, the remaining efficiency of the whole automobile is greatly influenced, and meanwhile, the increase of the assembly gaps inevitably increases the risk of water liquid leakage of the automobile.

Meanwhile, for the launder guard plate in the traditional side wall assembly, the traditional launder guard plate is single in structure and generally has a single-plate structure, so that the difficulty is high during actual assembly, and meanwhile, the assembly and the positioning between the launder guard plate and adjacent parts are inconvenient.

Therefore, in order to solve the above technical problems, the structure of the existing side wall assembly needs to be optimally designed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an integral tail beam assembly.

In order to achieve the purpose, the invention adopts the technical scheme that:

an integral tail beam assembly comprises a tail beam body, wherein the tail beam body comprises a tail beam plate, and the tail beam plate is connected with a rear coaming; the tail beam plate and the back panel are of an integrated structure; the periphery of the tail beam body is provided with an assembling connection part.

The mounting bracket is arranged on the inner side of the tail beam plate and comprises a bracket body, and a connecting buckle is arranged on the bracket body; the frame body comprises an installation flitch, and a convex strip is arranged on the installation flitch; the mounting flitch is provided with a material reducing sink groove, and the material reducing sink groove extends from the mounting flitch to the inside of the protruding strip; the connecting buckle is arranged on the protruding strip.

A positioning part is arranged at the edge of the mounting flitch and comprises a clamping block arranged on the tail beam plate and a clamping groove arranged on the mounting flitch, and the clamping block is connected with the clamping groove; the mounting flitch is connected with the tail beam plate in a welding mode.

The tail beam body further comprises a transition plate, the transition plate is connected with the tail beam plate and the back panel respectively, and the transition plate, the tail beam plate and the back panel are of an integrated structure.

The lower end of the tail beam plate is connected with the upper end of the back panel, and the rear ends of the tail beam plate and the back panel are connected with the transition plate; and the tail beam plate and the back panel enclose a rear side frame structure of the automobile triangular window.

And a wrapping flange is arranged at the edge of the tail beam body.

The tail part of the tail beam body is connected with a launder guard plate; the tail beam body is connected with the launder guard plate through the guard plate transition plate.

The launder guard plate comprises a longitudinal plate and a transverse plate, the longitudinal plate is connected with the tail beam body, and the transverse plate is arranged at one end, far away from the tail beam body, of the longitudinal plate; the launder guard plate is connected with the car body metal plate through the transverse plate.

One end of the longitudinal plate, which is far away from the transverse plate, is provided with a positioning sink groove; the positioning sink groove is connected with the wrapping flanging on the tail beam body; the depth of the positioning sink groove is the same as the thickness of the wrapping flanging.

The tail beam body is connected with the launder guard plate through a welded inner plate; the welding inner plate comprises a welding plate, and the welding plate is connected with the launder guard plate through a screw.

The invention has the advantages that:

the invention discloses an integral type tail beam assembly, which is characterized in that a tail beam plate and a back panel are made into an integral structure; namely, the tail beam assembly disclosed by the invention is equivalent to the integration of the traditional automobile tail beam and the upper coaming, so that the investment of a mould can be reduced, and the production cost of the automobile is greatly reduced.

Drawings

The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:

fig. 1 is a front view of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a perspective view of the present invention.

Fig. 4 is a schematic structural view of the present invention when the launder shield is removed.

Fig. 5 is a rear view of the mounting bracket of the present invention.

Fig. 6 is a schematic structural view of the launder shield according to the present invention.

Fig. 7 is a perspective view of the gutter apron of the present invention.

Fig. 8 is a bottom view of the gutter apron and the welded inner panel of the present invention when they are connected. .

Fig. 9 is a schematic structural view of the welded inner panel in the present invention.

Fig. 10 is a bottom view of the welded inner panel of the present invention.

Fig. 11 is a schematic structural view of the welded inner plate and the launder cover in the present invention.

The labels in the above figures are:

1. launder backplate, 2, welding inner panel, 3, tail-boom body.

Detailed Description

The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.

An integral tail beam assembly comprises a tail beam body 3, wherein the tail beam body 3 comprises a tail beam plate 31, and the tail beam plate 31 is connected with a back panel 32; the tail beam plate 31 and the back panel 32 are of an integrated structure; the periphery of the tail beam body 3 is provided with an assembling connection part; the invention discloses an integral tail beam assembly, which is mainly arranged at the tail part of a vehicle body, namely the C column area of an automobile; meanwhile, the tail beam assembly disclosed by the invention is mainly distributed at the tail part of the top edge beam; on the whole vehicle, the tail beam body 3 is equivalent to a peripheral plate structure of a rear triangular window of the automobile, specifically, the tail beam plate 31 is equivalent to a roof side beam tail structure above the traditional rear triangular window, and the rear coaming plate 32 is equivalent to a plate structure behind the rear triangular window, and the plate is connected with the rear coaming plate and can be generally called as an upper coaming plate; the tail beam plate 31 and the back plate 32 are made into an integral structure; namely, the tail beam assembly disclosed by the invention is equivalent to the integration of the traditional automobile tail beam and the upper coaming, so that the investment of a mould can be reduced, and the production cost of the automobile is greatly reduced; in addition, the tail beam plate 31 and the back panel 32 are of an integrated structure, and based on the arrangement, the connection between the tail beam plate 31 and the back panel 32 is avoided, and meanwhile, a tail beam assembly structure consisting of the tail beam plate 31 and the back panel 32 can move the connection part downwards when being connected with the back panel, so that the situation that the connection part between the tail beam plate 31 and the back panel 32 has a gap to cause leakage from the gap after the triangular window is assembled subsequently is avoided; in addition, the tail beam assembly disclosed by the invention is mainly suitable for miniature electric vehicles, such as Chery small ants or Mitsubishi macro mini and the like; the rear coaming 32 and the tail beam plate 31 are made into an integral structure, so that the connecting positions of the C column area of the automobile are reduced, and the assembling procedures are reduced; in addition, the back panel 32 and the tail beam panel 31 are made into an integral structure, and can be formed at one time through a die, so that the die input cost is reduced, and in addition, the tail beam panel 31 and the back panel 32 are integrally connected, so that the problem of assembly clearance at the joint of a tail beam body and a back side plate is avoided; the back panel 32 is actually a conventional top panel structure, and is referred to herein as a back panel structure for convenience of presentation, since there are some differences in structure.

In addition, the periphery of the tail beam body 3 is provided with an assembly connecting part; the tail beam assembly is connected with the adjacent component through the clamping blocks or the clamping grooves in the adjacent component, so that the tail beam assembly is connected with the adjacent component.

In addition, the tail beam assembly disclosed by the invention is equivalent to the structure integrating the traditional tail beam plate 31 and the back panel 32; the reason for adopting the design is because of the structural particularity of the micro electric vehicle; the micro electric vehicle is generally of a two-seat or four-seat structure, the axle distance of the vehicle body is short, so the tail plate structure of the triangular window of the traditional vehicle body is small, if the plate structures such as the tail beam plate 31 or the back panel 32 are manufactured step by step, the investment of a mould is greatly increased, the production process is increased at the same time, and the production cost is greatly increased, but the invention integrates the tail beam plate 31, the back panel 32 and the transition plate 33 which is arranged in the following to form an integrated structure, can produce three conventional plates at one time through one mould, simultaneously, because the same mould is produced, the relative positions of the tail beam plate 31 and the back panel 32 are stable, can well ensure the stability of the rear triangular window frame structure formed by splicing the tail beam plate 31 and the back panel 32, avoids the difference of the assembly clearance when the tail beam plate 31 and the back panel 32 are spliced traditionally, so that the rear triangular window frame structures are different, the consistency of the subsequent assembly of the rear triangular window cannot be ensured.

Further, in the present invention, the mounting bracket 4 is disposed on the inner side of the tail beam plate 31, the mounting bracket 4 includes a frame body, and the frame body is provided with a connecting buckle 44; according to the invention, through the arrangement of the mounting bracket 4, the connection between the connecting buckle 44 and the tail beam plate 31 is facilitated, and the subsequent connection and assembly between the tail beam plate 31 and the vehicle body are further facilitated, in addition, the frame body comprises a mounting attachment plate 41, and the mounting attachment plate 41 is provided with the protruding strip 42; the protruding strips 42 protrude the mounting attachment plate 41, the collecting mounting attachment plate 41 is of a flat plate structure, the protruding strips 42 are of a protruding rib structure, the protruding strips 42 are convenient for connection of the connecting buckles 44 and serve as rib structures, the structural strength of the mounting support 4 is greatly improved, and then the structural strength of the tail beam plate 31 is improved, so that the structural strength of the tail beam body is well guaranteed.

Furthermore, in the present invention, the mounting attachment plate 41 is provided with a material reducing sinking groove 43, and the material reducing sinking groove 43 extends from the mounting attachment plate 41 to the inside of the protruding strip 42; the connecting buckle 44 is arranged on the protruding strip 42; according to the invention, the material reducing sinking groove 43 is arranged, so that the interior of the convex strip 42 is hollow, the material reducing sinking groove 43 has a good avoiding effect except for the material reducing and weight reducing based on the foundation, the connection between the connecting buckle 44 and the convex strip 42 is facilitated, and the problem that the convex strip 42 is inconvenient to be connected with the connecting buckle 44 when being made into a solid structure is solved.

Furthermore, in the present invention, a positioning portion is disposed at an edge of the mounting attachment plate 41, the positioning portion includes a clamping block 35 disposed on the tail beam plate 31 and a clamping groove 45 disposed on the mounting attachment plate 41, and the clamping block 35 is connected to the clamping groove 45; the mounting flitch plate 41 is connected with the tail beam plate 31 in a welding mode; the mounting attachment plate 41 mainly plays a role in basic connection, when in actual connection, the mounting attachment plate 41 is connected with the interior of the tail beam plate 31 through a welding process, the welding process is a fixed connection mode, so that the mounting attachment plate 41 is required to be placed stably, and deviation does not occur during welding, a positioning part is arranged in the mounting attachment plate, the positioning part mainly comprises a clamping block 35 and a clamping groove 45, the clamping groove 45 in the mounting attachment plate 41 is sleeved on the clamping block 35 on the tail beam plate 31, two positioning parts are arranged on the tail beam plate 31 and are distributed at intervals, and based on the structural design, the accuracy of the relative position of the mounting bracket 4 and the tail beam plate 31 is ensured, and meanwhile, the mounting bracket 4 is prevented from shaking during subsequent welding.

Furthermore, the end part of the tail beam body is provided with a lap joint gasket 3-1; according to the invention, the end part of the tail beam body is lapped with the top edge beam, gaps are inevitably formed in lapping among components, rainwater can enter the vehicle body from the gaps, so that in order to avoid leakage at the lapping position, the end part of the tail beam body is provided with the lapping gasket 3-1, and the lapping gasket 3-1 can well play a role in protection and blocking, so that the leakage problem is avoided; in addition, the end part of the tail beam body is provided with two overlapping gaskets 3-1, and the thickness of the overlapping gasket 3-1 at the outer side of the end part of the tail beam body is smaller than that of the overlapping gasket 3-1 at the inner side of the end part of the tail beam body, so that the arrangement is that a clamping body block which is clamped is arranged at the end part of the tail beam body, and the thin overlapping gasket 3-1 can be used for avoiding the blocking when the clamping body block is clamped.

Further, in the invention, the tail beam body 3 further comprises a transition plate 33, the transition plate 33 is respectively connected with the tail beam plate 31 and the back panel 32, and the transition plate 33, the tail beam plate 31 and the back panel 32 are of an integrated structure; the transition plate 33 is also a part of a side wall assembly, and the transition plate 33 disclosed by the invention is equivalent to a plate structure at the upper part of a rear tail lamp of a traditional miniature electric vehicle and is mainly used for bridging the tail beam plate 31, the rear coaming 32, the rear tail lamp and the launder guard plate 1; the transition plate 33, the tail beam plate 31 and the rear tail plate are made into an integral structure, so that the existence of assembly gaps can be reduced, the investment cost of a die is reduced, and the subsequent connection with the launder guard plate 1 is facilitated; meanwhile, the transition plate 33, the tail beam plate 31 and the back panel 32 are of an integrated structure, so that the tail beam body 3 basically has no longitudinal assembly gap when being connected with adjacent components, the common connecting positions are all transverse gaps, and even if the longitudinal assembly gap (the gap formed by assembling the transition plate 33 and the launder guard plate 1) exists, the longitudinal assembly gap belongs to the assembly inner side.

Further, in the invention, the lower end of the tail beam plate 31 is connected with the upper end of the back panel 32, and the rear ends of the tail beam plate 31 and the back panel 32 are connected with the transition plate 33; the rear side frame structure of the automobile triangular window is enclosed by the tail beam plate 31 and the back plate 32; it should be noted that, since the tail boom assembly disclosed by the present invention is disposed on the vehicle body, the position of the tail boom assembly is determined, and for the convenience of the description, the terms such as the lower end and the rear end are used; in actual connection, the transition plate 33 disclosed by the invention needs to be connected with the tail beam plate 31 and the back panel 32 at the same time, the lower end of the left side face of the transition plate 33 is connected with the back panel 32, the lower end of the left side face of the transition plate 33 is connected with an automobile tail lamp, the upper end of the left side face of the transition plate 33 needs to be connected with the tail part of the tail beam plate 31, meanwhile, the end parts of the tail beam plate 31 and the back panel 32 are arranged in a butt joint mode, and the left side faces of the tail beam plate 31 and the back panel 32 form a back frame structure of a triangular window; meanwhile, because of the particularity of the structure of the automobile body and the difference of automobiles, the tail beam plate 31, the back panel 32 and the transition plate 33 are not simple flat plate structures and are generally arc-shaped plate structures with certain radian, and the specific structure and shape need to be improved or produced according to the appearance design requirements.

Further, a wrapping flange 34 is arranged at the edge of the tail beam body 3; the wrapping flanging 34 arranged in the invention has a good protection effect, because the wrapping flanging 34 is generally of an inner buckling structure, the structural strength at the edge of the tail beam body 3 can be well increased, and meanwhile, the wrapping flanging can also be used for clamping with adjacent components, and meanwhile, the wrapping flanging has a protection and flow guide effect, so that rainwater is prevented from entering the interior of a vehicle body through the assembly gap between the tail beam body 3 and the adjacent components; in addition, in the invention, besides the basic function, the wrapping flanging 34 on the transition plate 33 has a positioning function, and the wrapping flanging 34 on the transition plate 33 can be matched with the positioning sink 15 on the launder guard plate 1, so that the accuracy of the position of the launder guard plate 1 is ensured, and the tightness of the lap joint of the launder guard plate 1 and the tail beam body 3 can be ensured.

Further, the tail part of the tail beam body 3 is connected with a launder guard plate 1; the tail beam body 3 is connected with the launder protecting plate 1 through a protecting plate transition plate 33; the arrangement of the launder guard plate 1 mainly plays a good role in guiding flow, so that rainwater cannot leak from the joint of the tail beam assembly and the rear door when the rear back door of the automobile is opened; the launder guard plate 1 disclosed by the invention plays a role in plugging and bridging, and aims to enable the tail beam body 3 and the automobile rear door to have a connection relation, so that the problem of water leakage caused by pores between the tail beam body 3 and the automobile rear door is avoided; in actual connection, the launder shield 1 is not only connected with the transition plate 33, but also connected with the tail of the tail beam plate 31 at the upper end of the launder shield 1, as shown in the attached drawings.

Further, the launder guard plate 1 comprises a longitudinal plate 11 and a transverse plate 12, the longitudinal plate 11 is connected with the tail beam body 3, and the transverse plate 12 is arranged at one end, far away from the tail beam body 3, of the longitudinal plate 11; the launder guard plate 1 is connected with a vehicle body metal plate through a transverse plate 12; the longitudinal plate 11 plays a role in side surface plugging protection, and the transverse plate 12 plays a role in basic connection, so that the tail beam assembly is conveniently connected with the automobile tail body; specifically, the longitudinal plate 11 is required to be arranged perpendicular to the transverse plate 12, the longitudinal plate 11 is required to be arranged perpendicular to avoid interference, the movement interference with the longitudinal plate 11 when the back door is opened and closed is avoided, the lower end face of the transverse plate 12 is required to be identical to the appearance of the automobile body attaching area on the attaching side of the transverse plate 12 and the automobile body, the attaching degree of the transverse plate 12 and the tail portion of the automobile body can be well guaranteed through the arrangement, and the problem of water storage due to the fact that a gap exists between the transverse plate 12 and the automobile body is avoided.

Furthermore, in the invention, one end of the longitudinal plate 11, which is far away from the transverse plate 12, is provided with a positioning sinking groove 15; the positioning sinking groove 15 is connected with a wrapping flanging 34 on the tail beam body 3; the depth of the positioning sinking groove 15 is the same as the thickness of the wrapping flanging 34; the arrangement of the positioning sink groove 15 is equivalent to the reduction of the thickness of the end part of the longitudinal plate 11, and the arrangement of the positioning sink groove 15 enables the longitudinal plate 11 to have a step platform structure, so that the positioning sink groove can be well matched with the transition plate 33 and the wrapping flange 34 on the tail beam plate 31, the accuracy and the stability of the mounting positions of the launder guard plate 1 and the tail beam body 3 can be well realized, and meanwhile, the depth of the positioning sink groove 15 is required to be the same as the thickness of the wrapping flange 34; due to the arrangement, the flatness of the longitudinal plate 11 and the wrapping flanging 34 connected with the longitudinal plate can be guaranteed, the wrapping flanging 34 is prevented from protruding out of the longitudinal plate 11, and finally the influence of the arrangement of the wrapping flanging 34 on opening or closing of the rear door is avoided.

In addition, one end of the longitudinal plate, which is far away from the transverse plate, is provided with an inserting groove 11-1, the inserting groove 11-1 is perpendicular to the longitudinal plate, and the welding inner plate is provided with a welding bulge 2-1; the insertion groove 11-1 is matched with the welding bulge 2-1 on the welding inner plate, namely the end part of the welding bulge 2-1 is inserted in the insertion groove; due to the arrangement, the connection stability between the welding inner plate and the launder guard plate can be well ensured.

Further, in the invention, the transverse plate 12 is provided with a clamping sinking block 13, the transverse plate 12 is provided with an assembly hole, and the assembly hole simultaneously penetrates through the transverse plate 12 and the clamping sinking block 13; a fastening bolt is arranged in the assembling hole; the fastening bolt penetrates through the assembly hole to be connected with the vehicle body; according to the invention, through the arrangement of the clamping sinking block 13, the transverse plate 12 is provided with a downward convex structure, a sinking groove can be formed at the corresponding position of the vehicle body, and the clamping sinking block 13 is matched with the sinking groove, so that the basic positioning of the transverse plate 12 can be well realized, and the accuracy of the assembly position of the tail beam assembly is ensured.

Further, the edges of the transverse plates 12 are provided with lap-joint flanges; the lap-joint turnups comprise upper turnups 1-3 arranged at the upper ends of the transverse plates 12, lower turnups 1-1 arranged at the lower ends of the transverse plates 12 and side turnups 1-2 arranged on the side surfaces of the transverse plates 12; in addition, the side turned edges 1-2 play a clamping limiting role, and a clamping mode can be realized by arranging groove bodies on the rear door frame, so that the positioning of the transverse plate 12 can be facilitated based on the structural design; in addition, the lower flanging 1-1 is of a step platform structure, so that the lap joint positioning of the launder protecting plate 1 and the lower end plate structure is facilitated.

Further, in the invention, the tail beam body 3 is connected with the launder guard plate 1 by welding the inner plate 2; the welding inner plate 2 comprises a welding plate 21, and the welding plate 21 is connected with the launder guard plate 1 through a screw; during specific connection, the welding plate 21 is connected with the tail beam body 3, and the arrangement of the welding plate 21 has the functions of increasing the structural strength of the tail beam body 3 and facilitating the connection between the launder protective plate 1 and the tail beam body 3; plays a good role in bridging connection.

Furthermore, a bridging part is arranged on the longitudinal plate 11 of the launder protecting plate 1, the bridging part comprises a bridging plate 14 arranged on the longitudinal plate 11, and the welding plate 21 is connected with the bridging plate 14 through a screw; the arrangement of the bridging plate 14 facilitates the connection between the launder protecting plate 1 and the welded plate 21, and particularly, the bridging handle is arranged vertically to the longitudinal plate 11, and the size of the bridging plate 14 is equivalent to that of the transversely extending longitudinal plate 11, so that the connection between the launder protecting plate 1 and the welded plate 21 is facilitated.

Furthermore, the support columns 22 are arranged on the welding plate 21, the height of the welding inner plate 2 is increased longitudinally through the arrangement of the support columns 22, the connection between the welding inner plate 2 and the launder protection plate 1 is facilitated, and meanwhile, the support columns 22 are of a cylindrical structure, so that an internal support effect can be achieved during subsequent assembly, the support force of the launder protection plate 1 is increased, and the connection stability of the launder protection plate 1 can be better ensured; meanwhile, in the invention, the welding plate 21 is provided with a reducing groove 26, and the reducing groove 26 extends from the welding plate 21 to the inside of the supporting column 22; the bridging plate 14 is connected with the end part of the supporting column 22 through a screw; due to the arrangement of the material reducing groove 26, the basic function is that a good weight reducing effect is achieved, and the other effect is that an avoiding effect is achieved, so that the connection between the screw and the supporting column 22 is facilitated.

Further, in the invention, a bridging column 23 is arranged at the upper end of the supporting column 22, a screw locking hole 25 is arranged on the bridging column 23, and the bridging plate 14 is connected with the screw locking hole 25 on the bridging column 23 through a screw; bridging post 23 plays a basic connection effect, and bridging post 23 can peg graft on bridging board 14 when in actual use for welded inner panel 2 has one when being connected with bridging board 14 and fixes in advance, makes things convenient for subsequent screw spiro union.

Furthermore, in the present invention, a positioning block 24 is disposed on the periphery of the bridging column 23; the periphery of the bridging column 23 is provided with a plurality of positioning blocks 24, the upper ends of the positioning blocks 24 protrude out of the bridging column 23, the bridging plate 14 is provided with a connecting groove, the positioning blocks 24 are inserted into the connecting groove, good pre-positioning is achieved, and positioning operation of the bridging plate 14 and the bridging column 23 is avoided.

Further, in the present invention, a positioning ring plate 16 is disposed on the bridging plate 14, and a positioning inclined plane 161 is disposed on a side of the positioning ring plate 16 away from the bridging plate 14; one side of the positioning ring plate 16, which is far away from the bridge plate 14, is attached to a corresponding vehicle body; the positioning ring plate has the advantages that one function is a supporting function, the other function is a protecting function, the protecting function is that a sunk groove structure is formed in the bridging plate 14, screws can be conveniently placed, the influence of the leakage of the screws on subsequent assembly is avoided, the supporting function is that the inner portion of the tail beam assembly needs to be attached to the corresponding area of the tail portion of the vehicle body during the subsequent assembly of the tail beam assembly, the positioning ring plate 16 on the bridging handle is required to be attached to the corresponding area of the tail portion of the vehicle body during actual attachment of the tail beam assembly, and due to the arrangement, the use of materials is reduced while good supporting strength of the tail beam assembly is guaranteed.

During actual assembly, the welded inner plate 2 is required to be connected with the launder guard plate 1; when the welding inner plate is connected with the launder guard plate, the end part of the welding bulge of the welding inner plate is required to be inserted into the insertion groove of the launder guard plate; the end part of a positioning block on the welded inner plate is required to be attached to the end face of the bridging plate, and based on the arrangement, the accuracy of the relative position of the welded inner plate and the launder can be ensured; meanwhile, the mounting bracket 4 is connected with the tail beam plate 31 and then is welded and fixed, after the operation is finished, the welded inner plate 2 and the launder which are connected are inserted in the corresponding area of the tail beam body 3, and then the welded inner plate 2 and the tail beam body 3 are connected by using a welding process; after the operation is finished, the connecting buckle 44 is arranged at the corresponding position of the tail beam body 3 to form the tail beam assembly.

It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.