CN220281513U - Integrated rear end boundary beam joint structure and new energy vehicle thereof - Google Patents

Abstract

The utility model relates to the field of fittings for vehicles and discloses an integrated rear end side beam joint structure and a new energy vehicle thereof, wherein the rear end side beam joint structure comprises an integrally formed joint main body, a door sill beam connecting part, a front auxiliary frame reinforcing part and a rear auxiliary frame reinforcing part, wherein the door sill beam connecting part, the front auxiliary frame reinforcing part and the rear auxiliary frame reinforcing part are formed on the outer side part of the rear end side beam joint main body in sequence along a first direction; the joint main body further comprises a battery mounting surface, a front auxiliary frame connecting part and a rear auxiliary frame connecting part which are formed at the bottom of the joint main body and sequentially arranged along the first direction, wherein the battery mounting surface is used for connecting a battery, and the front auxiliary frame connecting part and the rear auxiliary frame connecting part are used for being connected with the chassis auxiliary frame respectively. The rear end boundary beam joint structure integrates the mounting points of the parts related to the vehicle in an integrated forming mode, improves the overall precision and performance of the rear end boundary beam joint structure, realizes modularization and light weight, and is beneficial to improving the rigidity of the vehicle body and guaranteeing the collision safety of the vehicle.

Description

Integrated rear end boundary beam joint structure and new energy vehicle thereof

Technical Field

The embodiment of the application relates to the technical field of accessories for vehicles and vehicles, in particular to an integrated rear end boundary beam joint structure and a new energy vehicle thereof.

Background

The traditional automobile body that has battery system's automobile body is steel automobile body generally, adopts the high strength steel sheet metal welding assembly of back longeron of frock clamp welding formation steel after the stamping of high strength steel sheet. The steel car body is extremely easy to cause the battery system to be extruded and deformed during collision, so that the battery system is damaged.

The rear side member area is a main damaged part when a vehicle is in a back collision or rear collision accident, and the quality of the crashworthiness of the rear side member area directly determines the quality of the safety performance of the vehicle. The rear side member region related members such as a rocker, a chassis subframe, etc. need to be stably connected in order to effectively cope with the collision condition of the vehicle, and the connection structure provided between these members is called a rear side member joint structure.

In the prior art, the rear end boundary beam joint structure is generally of a split structure, the structural strength is weak, and the manufacturing and the installation are complex.

Disclosure of Invention

The utility model aims at solving the problems that the integration degree of the rear end boundary beam joint structure on the existing vehicle is not high, the collision safety performance is not effectively ensured, and the connection rigidity of a battery is insufficient.

In order to solve the problems, the technical scheme of the utility model is as follows:

an integrated rear end boundary beam joint structure, applied to a vehicle, comprising:

the connector body is integrally formed;

the joint body comprises a threshold beam connecting part, a front auxiliary frame reinforcing part and a rear auxiliary frame reinforcing part which are formed on the outer side part of the joint body and are sequentially arranged along a first direction, wherein the threshold beam connecting part is used for installing a threshold beam;

the connector body further comprises a battery mounting surface, a front auxiliary frame connecting part and a rear auxiliary frame connecting part which are formed at the bottom of the connector body and sequentially distributed along a first direction, wherein the battery mounting surface is used for connecting a battery, the front auxiliary frame connecting part corresponds to the front auxiliary frame reinforcing part in position, the rear auxiliary frame connecting part corresponds to the rear auxiliary frame reinforcing part in position, and the front auxiliary frame connecting part and the rear auxiliary frame connecting part are used for being connected with a chassis auxiliary frame respectively.

Further, the joint body further includes a damper reinforcing portion formed at an outer side portion thereof, and a damper connecting portion formed at a bottom portion thereof, the damper connecting portion being positioned corresponding to the damper reinforcing portion and for connecting a damper, the damper reinforcing portion being positioned between the front sub-frame reinforcing portion and the rear sub-frame reinforcing portion.

Still further, through a boundary beam mainboard intercommunication between preceding sub vehicle frame reinforcing part, bumper shock absorber reinforcing part and the back sub vehicle frame reinforcing part, set gradually first curb plate, second curb plate and third curb plate in self width direction on the boundary beam mainboard, first curb plate and third curb plate are located width direction both ends respectively, first curb plate, second curb plate and third curb plate mutual parallel arrangement and with the boundary beam mainboard is perpendicular.

Still further still, be the first curb plate with between the third curb plate follow boundary beam mainboard length extension direction is the interval and sets up the first floor of polylith, first floor with the crossing cross reinforcement structure that forms of second curb plate.

Still further, at least two adjacent first rib plates are provided, wherein the initial end of one first rib plate is connected with the final end of the other first rib plate through a second rib plate, so that a cross reinforcing rib structure is formed.

Still further, in shock absorber reinforcing part department has at least three adjacent first floor, and wherein the top of first floor of first piece and the terminal of third first floor link to each other through the third floor, and the first floor of second piece is located the third floor with the crossing line that the second curb plate intersects, third floor, second curb plate and first floor form the rice font strengthening rib structure.

Still further, the edges of the first rib plate, the second rib plate and the third rib plate are in a concave arc shape.

Further, the joint main body further comprises a rear floor first beam mounting surface, a rear floor second beam mounting surface, a rear floor third beam mounting surface, a rear seat mounting surface, a rear floor fourth beam mounting surface and a rear energy absorption box mounting surface which are formed at the top of the joint main body and are sequentially arranged along the first direction; the rear energy-absorbing box is installed and used for installing the rear energy-absorbing box.

Further, the rear energy-absorbing box mounting surface is connected with the rear energy-absorbing box through FDS.

The utility model also provides a new energy vehicle which is provided with the integrated rear end boundary beam joint structure.

The beneficial effects of the utility model are as follows:

the rear end side beam joint structure integrates the mounting points of the parts related to the vehicle in an integrated forming manner, a mode that a plurality of small parts are welded into a large assembly in the traditional structure is abandoned, on one hand, the overall accuracy and performance of the rear end side beam joint structure are improved, on the other hand, modularization and light weight are realized, the improvement of the rigidity of a vehicle body is facilitated, and particularly, the integrated design of a battery mounting surface enables the battery mounting point to be arranged on a joint structure body, namely, the connection relationship between the battery and the joint structure body is increased, the mounting rigidity of the battery can be remarkably improved, and the collision safety of the battery is improved;

the front auxiliary frame connecting part and the rear auxiliary frame connecting part are respectively and correspondingly provided with the reinforcing parts, so that the structural reinforcement in a large area is facilitated, the rigidity of the rear end boundary beam joint structure is improved, the load is transferred, and the collision performance of the rear end boundary beam joint structure and the NVH performance of the whole vehicle are effectively improved.

Drawings

Fig. 1 is a schematic view of a vehicle body structure provided in embodiment 1 of the present application, in which an integrated rear end side rail joint structure is installed;

fig. 2 is a schematic side view of an integrated rear end boundary beam joint structure according to embodiment 1 of the present application;

fig. 3 is a schematic bottom view of the integrated rear end boundary beam joint structure provided in embodiment 1 of the present application;

fig. 4 is an internal schematic view of the integrated rear end boundary beam joint structure provided in embodiment 1 of the present application (the direction of the illustration is opposite to that of fig. 1, 2 and 3);

fig. 5 is an isometric view of the integrated trailing edge beam joint structure provided in embodiment 1 of the present application.

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present patent.

Reference numerals:

1-a threshold beam connection; 21-front subframe reinforcement; 22-a rear subframe reinforcement; 23-damper reinforcements; 31-a battery mounting surface; 32-a front subframe connection; 33-rear subframe connection; 34-damper connection; 41-a rear floor first beam mounting surface; 42-a rear floor second cross member mounting surface; 43-rear floor third beam mounting surface; 44-rear seat mounting point; 45-a fourth cross beam mounting surface of the rear floor; 46-rear energy-absorbing box mounting surface; 51-edge beam main board; 52-a first side plate; 53-a second side panel; 54-a third side panel; 55-a first rib; 56-second ribs; 57-third rib; 6-a cross-shaped reinforcing rib structure; 7-a crossed reinforcing rib structure; 8-meter-shaped reinforcing rib structure; 9-a mould thimble column platform; 01-a threshold beam; 02-battery; 03-chassis subframe; 04-a rear energy absorption box; 05-a connector body.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and technical features in the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as undue limitation to the present application.

For the purposes, technical solutions and advantages of the embodiments of the present application to be more apparent, the specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are illustrative of the present application, but are not intended to limit the scope of the present application.

In the present embodiments, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, in the embodiments of the present application, the terms "upper," "lower," "left," and "right," etc., are defined with respect to the orientation in which the components in the drawings are schematically disposed, and it should be understood that these directional terms are relative terms, which are used for descriptive and clarity with respect to each other, and which may vary accordingly with respect to the orientation in which the components in the drawings are disposed.

In the embodiments herein, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either a fixed connection, a removable connection, or an integral body; can be directly connected or indirectly connected through an intermediate medium.

In the present embodiments, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The technical scheme of the utility model is described in detail below with reference to the specific drawings.

Example 1

As shown in fig. 1, 2 and 5, an integrated rear end boundary beam joint structure applied to a vehicle comprises an integrally formed joint body 05, wherein the joint body 05 is integrally manufactured by integrated high-pressure casting or low-pressure casting or an integrated machine and aluminum alloy, and comprises the following structures:

a. as shown in fig. 2, a rocker joint portion 1, a front sub-frame reinforcing portion 21, and a rear sub-frame reinforcing portion 22 are formed on the outer side of the joint body and are arranged in this order in the first direction.

b. As shown in fig. 3, a battery mounting surface 31, a front subframe connecting portion 32, and a rear subframe connecting portion 33 are formed at the bottom of the joint main body in this order along the first direction, the front subframe connecting portion 32 corresponds in position to the front subframe reinforcing portion 21, the rear subframe connecting portion 33 corresponds in position to the rear subframe reinforcing portion 22, and the front subframe connecting portion 32 and the rear subframe connecting portion 33 are respectively connected to the chassis subframe 03.

c. As shown in fig. 2 and 3, the damper reinforcing portion 23 formed at the outer side of the joint main body and the damper connecting portion 34 formed at the bottom of the joint main body are positioned corresponding to the damper reinforcing portion 23 and used for connecting the damper, and the damper reinforcing portion 23 is located between the front sub-frame reinforcing portion 21 and the rear sub-frame reinforcing portion 22.

d. As shown in fig. 4, a rear floor first cross member mounting surface 41, a rear floor second cross member mounting surface 42, a rear floor third cross member mounting surface 43, a rear seat mounting surface 44, a rear floor fourth cross member mounting surface 45, and a rear crash box mounting surface 46, which are formed on top of the joint main body and are arranged in this order in the first direction; the term "top" as used herein refers to the "outer side" and "bottom" described above.

The threshold beam connecting part 1 is used for installing a threshold beam 01, and as shown in fig. 1, the threshold beam connecting part 1 is connected with the threshold beam 01 through a transfer screw FDS and a bolt so as to effectively improve the force transmission performance and the collision resistance of the whole vehicle; wherein FDS refers to a spin riveting process.

The battery mounting surface 31 is used to connect the battery 02, and the battery 02 is connected at the battery mounting surface 31 by bolts. In this embodiment, the battery mounting surface 31 is disposed on the rear end side beam joint structural body, that is, a connection relationship is established between the battery 02 and the joint structural body, so that the rigidity of the mounting point of the battery can be effectively improved, and the collision safety of the battery can be improved.

Specifically, as shown in fig. 2, the front sub-frame reinforcement portion 21, the shock absorber reinforcement portion 23, and the rear sub-frame reinforcement portion 22 are communicated by a side sill main plate 51, and a first side plate 52, a second side plate 53, and a third side plate 54 are sequentially provided on the side sill main plate 51 in the width direction thereof, wherein the first side plate 52 and the third side plate 54 are respectively located at both ends in the width direction, and the first side plate 52, the second side plate 53, and the third side plate 54 are arranged parallel to each other and perpendicular to the side sill main plate 51. Here, the side sill main plate 51 may be understood as a web of H-section steel, the first side plate 52 and the third side plate 54 may be understood as wing plates of H-section steel, and the second side plate 53 corresponds to a plate-like structure provided on the web of H-section steel.

The chassis subframe 03 is mounted at the front subframe connecting portion 32 and the rear subframe connecting portion 33 by bolts, in order to practically realize a stable connection value-added effect of the front subframe reinforcing portion 21 and the rear subframe reinforcing portion 22 to the chassis subframe 03, in fig. 2, a plurality of first rib plates 55 are further provided between the first side plate 52 and the third side plate 54 at intervals along the length extension direction of the side Liang Zhuban 51, and the first rib plates 55 and the second side plate 53 intersect to form a cross-shaped reinforcing rib structure 6. At least two adjacent first rib plates 55 are provided, wherein the initial end of one first rib plate is connected with the final end of the other first rib plate through a second rib plate 56 to form the cross reinforcing rib structure 7.

The design of each side plate and the related reinforcing rib structure at the front auxiliary frame reinforcing part and the rear auxiliary frame reinforcing part are beneficial to structural reinforcement in a large area, the rigidity of the mounting point of the auxiliary frame can be effectively improved, the using amount of aluminum alloy materials is reduced, the rigidity of the rear end side beam joint structure can be improved, the load is transferred, and the collision performance of the rear end side beam joint structure and the NVH performance of the whole vehicle are effectively improved. In addition, the reinforcing rib structure can effectively reduce the hot spot effect on the die steel of the die of the formed rear end boundary beam joint structure, is favorable for the structural design of the steel die, avoids the narrow conical die casting die hub, and effectively improves the production qualification rate.

As shown in fig. 2, at the damper reinforcing portion 23, there are at least three adjacent first ribs 55, wherein the start ends of the first ribs and the end ends of the third ribs are connected by a third rib 57, and the second ribs are located on the intersecting line where the third rib 57 and the second side plate 53 intersect, and at this time, the third rib 57, the second side plate 53 and the first ribs 55 form the rib structure 8 in a zigzag shape.

The shock absorber reinforcing part 23 is a key hard point installation area, the design of the rice-shaped reinforcing rib structure 8 can effectively improve the installation point rigidity of the shock absorber, optimize the force transmission path of the shock absorber, improve the installation strength of the shock absorber and provide powerful guarantee for the collision-resistant safety performance of a vehicle.

In fig. 4, the integrated structural design of each beam mounting surface of the rear floor on the rear end boundary beam joint structure realizes the matching relationship with four reinforcing beams (namely, the first, second, third and fourth beams of the rear floor) in the rear floor assembly, realizes the connection relationship through the transfer screw FDS, and effectively improves the bending rigidity of the whole vehicle.

The rear energy-absorbing box mounting surface 46 is used for mounting the rear energy-absorbing box 04, as shown in fig. 1, the design of the rear energy-absorbing box mounting surface realizes the matching relation with the rear energy-absorbing box, and the rear energy-absorbing box mounting surface 46 is connected with the rear energy-absorbing box 04 through the transfer screw FDS, so that impact energy generated by collision can be effectively absorbed, and the force transmission path of the whole vehicle is optimized.

The rear end boundary beam joint structure integrates a plurality of mounting points into a whole, realizes modularization and light weight, and is beneficial to the improvement of the rigidity of the vehicle body; the rear end boundary beam joint structure is internally provided with a larger design space and design freedom, the collision performance of the rear end boundary beam joint structure is improved by the structural design, the trend, the layout and the material thickness of the reinforcing ribs in the structure are adjusted, and the collision safety and the light weight effect of a vehicle can be remarkably improved.

The material of the rear end edge beam joint structure adopts AlSi10MnMg or 6-series heat treatment aluminum alloy or 7-series heat treatment aluminum alloy, and the materials have enough elongation and bending angle after stretching and breaking, so that the rear end edge beam joint structure can be ensured to have good plasticity, thereby improving the integration level and the collision energy absorption performance.

Meanwhile, in order to further improve the plasticity of the rear end boundary beam joint structure, the rear end boundary beam joint structure can be subjected to heat treatment, so that the shape and the size change can be kept within a specified range under the condition of long-term service, and the performance stability of a vehicle is ensured.

The first rib 55, the second rib 56 and the third rib 57 all have draft angles of about 1.5 ° from the root to the edge, and local reinforcement is provided at each rib root to reduce deformation after heat treatment. In addition, considering the lightweight, the edges of all the rib plates are designed to be concave arc shapes so as to reduce unnecessary material use to the maximum extent, ensure the performance of each rib plate and reduce the weight of the rear end boundary beam joint structure.

In order to facilitate smooth ejection of the rear end boundary beam joint structure from the mold after the end of integral forming, the rear end boundary beam joint structure is further provided with a mold thimble column platform 9 at the intersection convergence point of each rib plate and each side plate, and the mold thimble column platform 9 can further promote the self performance of the rear end boundary beam joint structure. The die ejector pin column platform is used for being in contact with the die ejector pin, so that the die ejector pin ejects out the molded rear end boundary beam joint structure.

Compared with the traditional vehicle body structure, the vehicle rear end boundary beam joint structure is reconfigured, through the integrated structural design, various welding fixtures, detection tools and dies required by the traditional sheet metal rear longitudinal beam welding assembly are reduced, the process flow is reduced, and the whole vehicle precision, the collision-resistant safety, the battery reliability, the light-weight effect, the whole vehicle production beat and the like are improved. Through special integrated layout of connection points of related components and structural design of various reinforcing ribs, the force transmission path of the whole vehicle is optimized, the bending and torsional rigidity of the whole vehicle is improved, and excellent collision performance and NVH performance of the whole vehicle are ensured.

Example two

The present embodiment provides a new energy vehicle provided with an integrated rear end side rail joint structure as in embodiment 1.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments. The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims (8)

1. An integrated rear end boundary beam joint structure, is applied to the vehicle, its characterized in that includes:

the connector body is integrally formed;

the joint body comprises a threshold beam connecting part, a front auxiliary frame reinforcing part and a rear auxiliary frame reinforcing part which are formed on the outer side part of the joint body and are sequentially arranged along a first direction, wherein the threshold beam connecting part is used for installing a threshold beam;

the connector main body further comprises a battery mounting surface, a front auxiliary frame connecting part and a rear auxiliary frame connecting part which are formed at the bottom of the connector main body and are sequentially arranged along a first direction, wherein the battery mounting surface is used for connecting a battery, the front auxiliary frame connecting part corresponds to the front auxiliary frame reinforcing part in position, the rear auxiliary frame connecting part corresponds to the rear auxiliary frame reinforcing part in position, and the front auxiliary frame connecting part and the rear auxiliary frame connecting part are respectively connected with a chassis auxiliary frame;

the joint main body further comprises a shock absorber reinforcing part formed on the outer side part of the joint main body and a shock absorber connecting part formed on the bottom of the joint main body, wherein the shock absorber connecting part is positioned corresponding to the shock absorber reinforcing part and used for connecting a shock absorber, and the shock absorber reinforcing part is positioned between the front auxiliary frame reinforcing part and the rear auxiliary frame reinforcing part;

the front auxiliary frame reinforcing part, the shock absorber reinforcing part and the rear auxiliary frame reinforcing part are communicated through a boundary beam main board, a first side board, a second side board and a third side board are sequentially arranged on the boundary beam main board in the width direction of the boundary beam main board, the first side board and the third side board are respectively positioned at two ends in the width direction, and the first side board, the second side board and the third side board are mutually arranged in parallel and are perpendicular to the boundary beam main board.

2. The integrated trailing edge beam joint structure according to claim 1, wherein a plurality of first rib plates are provided between the first side plate and the third side plate at intervals along the length extension direction of the edge beam main plate, and the first rib plates and the second side plate intersect to form a cross-shaped reinforcing rib structure.

3. The integrated trailing edge beam joint structure according to claim 2, wherein at least two adjacent first ribs are provided, wherein the beginning of one first rib and the end of the other first rib are connected by a second rib to form a cross-rib structure.

4. The integrated trailing edge beam joint structure according to claim 3, wherein at least three adjacent first ribs are provided at the damper reinforcing portion, wherein a start end of the first rib and a terminal end of the third rib are connected by the third rib, the second rib is located at an intersecting line where the third rib and the second side plate intersect, and the third rib, the second side plate and the first rib form a rib structure in a shape of a Chinese character 'mi'.

5. The integrated trailing edge beam joint structure according to claim 4, wherein edges of the first, second and third ribs are concave arc-shaped.

6. The integrated trailing edge beam joint structure according to claim 1 wherein the joint body further comprises a rear floor first beam mounting surface, a rear floor second beam mounting surface, a rear floor third beam mounting surface, a rear seat mounting surface, a rear floor fourth beam mounting surface, and a rear energy absorber box mounting surface formed on top of the joint body and arranged in sequence along a first direction; the rear energy-absorbing box is installed and used for installing the rear energy-absorbing box.

7. The integrated trailing edge beam joint structure according to claim 6 wherein the trailing box mounting face is connected to the trailing box using FDS.

8. A new energy vehicle characterized by being provided with an integrated rear end side rail joint structure according to any one of claims 1 to 7.