CN209126830U - A rear longitudinal beam joint structure and automobile - Google Patents

Abstract

The application provides a rear longitudinal beam joint structure and an automobile. The rear longitudinal beam joint structure includes a front section of a rear longitudinal beam, a front cross member of a rear floor and an inner panel of a rocker. The front section of the rear longitudinal beam forms a first connecting portion, and the first connecting portion forms a A second connecting part; the first connecting part has at least two contact surfaces overlapping with the rocker inner plate, and the first connecting part and the rocker inner plate are connected by mechanical connection, or welding, or a combination of mechanical connection and welding Connecting; the second connecting part has at least two contact surfaces overlapping with the front beam of the rear floor, and the second connecting part and the front beam of the rear floor are connected by mechanical connection, or welding, or a combination of mechanical connection and welding. connect. The automobile includes a rear side member joint structure. The rear longitudinal beam joint structure of the present application can improve the rigidity of the rear longitudinal beam joint and improve the comfort of automobile users.

Description

A rear longitudinal beam joint structure and automobile

technical field

The present application relates to the technical field of vehicles, in particular to a rear longitudinal beam joint structure and an automobile.

Background technique

Most of the components and assemblies of the car are fixed by the frame structure, such as the engine, drive train, suspension, steering system, cab, trunk and related operating mechanisms. The frame structure is generally composed of a plurality of cross beams, a plurality of longitudinal beams and a door sill. The frame structure plays a role of supporting and connecting various parts of the automobile, and bears various loads from inside and outside the vehicle. When the vehicle is running, it is necessary to ensure that the installation and operation of each assembly is reliable, and the occupants are comfortable and safe. Among them, when the car is running on rough roads, the frame may have torsional deformation and bending deformation in the longitudinal plane under the load. These deformations will change the relative positions of the components installed on the frame, thereby affecting the its working fine. Therefore, the frame structure should have sufficient strength and appropriate stiffness, and with the continuous development of automotive technology, the requirements for body performance are getting higher and higher, not only to improve the stiffness of the frame structure to achieve higher NVH performance, but also To achieve the lightweight of the car.

Therefore, the improvement of the rigidity of the frame structure and the lightweight of the vehicle have become technical problems to be solved urgently.

Utility model content

The purpose of the present application is to propose a rear longitudinal beam joint structure and an automobile, so as to improve the rigidity of the frame structure of the automobile and make the automobile lightweight.

In order to achieve the purpose of the present application, an embodiment of the first aspect of the present application provides a rear longitudinal beam joint structure, including a rear longitudinal beam front section, a rear floor front cross beam, and a rocker inner panel; the rear longitudinal beam front section forms a first connecting portion, A second connecting portion is formed on the first connecting portion;

The first connection part has at least two contact surfaces overlapping with the rocker inner plate, and the first connection part and the rocker inner plate are mechanically connected, or welded, or a combination of mechanical connection and welding. connection method to connect;

The second connecting portion has at least two contact surfaces overlapping with the front cross member of the rear floor, and the second connecting portion and the front cross member of the rear floor are mechanically connected, or welded, or mechanically connected and welded. Connect in combination.

Wherein, the first connecting portion and the inner panel of the rocker are connected by a connecting piece and then welded, and the second connecting portion and the front cross beam of the rear floor are connected by a connecting piece and then welded.

Wherein, the first connecting part is formed with a U-shaped first installation groove, and three contact surfaces overlapping with the rocker inner plate are formed in the first installation groove, and the rocker inner plate is embedded in the first installation groove. A mounting slot for fixing.

Wherein, the first connection part includes a first plate, and a second plate and a third plate are formed on one side of the first plate;

a side surface of the first plate, the second plate and the third plate form the first connection part;

The first installation groove is formed between the second plate and the third plate.

Wherein, a first protrusion is provided on one side of the first plate, a first engaging groove is provided on the inner panel of the rocker corresponding to the first protrusion, and the first protrusion is embedded in the in the first engaging groove.

Wherein, the second connecting part is formed with a U-shaped second installation groove, and three contact surfaces are formed in the second installation groove to overlap with the front beam of the rear floor, and the front beam of the rear floor is embedded in the The second installation groove is used for fixing.

Wherein, the second connecting part includes a fourth plate, a fifth plate and a sixth plate formed on the other side of the first plate;

The other side of the first plate, the fourth plate, the fifth plate and the sixth plate form the second connection portion, and the first plate is formed between the fifth plate and the sixth plate. Two installation slots;

The fourth plate is disposed below the fifth plate and the sixth plate, and the fourth plate is used to support the rear floor front cross member.

Wherein, the fourth plate is provided with a second protrusion, the rear floor front beam is provided with a second engaging groove at a position corresponding to the second protrusion, and the second protrusion is embedded in the second protrusion inside the slot.

Wherein, the front section of the rear longitudinal beam, the front cross beam of the rear floor and the inner panel of the door sill are all made of aluminum alloy materials.

As the same inventive concept, the second aspect of the present application provides an automobile, which includes the rear side member joint structure described in the first aspect.

The above-mentioned embodiments at least have the following beneficial effects:

An embodiment of the present application provides a rear side member joint structure, which includes a first connection portion and a second connection portion connected thereto, and the front section of the rear side member is connected to the rocker inner panel through a first connection portion having at least two contact surfaces. It is overlapped and overlapped with the rear floor front cross member through a second connection part having at least two contact surfaces. In this way, the contact area between the joint structure of the rear longitudinal beam and the inner panel of the rocker and the front cross member of the rear floor can be increased. At the same time, the strength of the rear longitudinal beam joint structure of the automobile is also improved, and the rear longitudinal beam joint structure has better force transmission performance. In addition, the front section of the rear longitudinal beam of the rear longitudinal beam joint structure, the front cross member of the rear floor and the inner panel of the door sill are all made of aluminum alloy materials, which can effectively reduce the body weight and improve the fuel economy of the whole vehicle. Other beneficial effects of the present application that are not described in detail here will be further described in the detailed description below.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic three-dimensional structural diagram of a rear longitudinal beam joint structure according to some embodiments of the present application.

FIG. 2 is an exploded view of a rear longitudinal beam joint structure according to some embodiments of the present application.

FIG. 3 is a top view of a rear longitudinal beam joint structure according to some embodiments of the present application.

FIG. 4 is a bottom view of a rear longitudinal beam joint structure according to some embodiments of the present application.

FIG. 5 is a schematic structural diagram of the first connecting portion according to some embodiments of the present application.

FIG. 6 is a schematic structural diagram of the second connecting portion according to some embodiments of the present application.

FIG. 7 is a schematic diagram of the structure of the first protrusion according to some embodiments of the present application.

FIG. 8 is a schematic diagram of a second protrusion structure according to some embodiments of the present application.

Component markings in the figure:

Front section of rear longitudinal beam 1;

The first connecting part 11, the first plate 111, the second plate 112, the third plate 113, and the first protrusion 114;

The second connecting part 12, the fourth plate 121, the fifth plate 122, the sixth plate 123, the second protrusion 124;

door sill inner panel 2;

Rear floor front beam 3;

Connector 4.

Detailed ways

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures denote elements that have the same or similar functions. While various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application may be practiced without certain specific details. In some instances, means, elements and circuits well known to those skilled in the art have not been described in detail so as not to obscure the subject matter of the present application.

As shown in FIGS. 1-4 , an embodiment of the first aspect of the present application provides a rear longitudinal beam joint structure, which includes a rear longitudinal beam front section 1 , a rocker inner panel 2 and a rear floor front cross beam 3 . A first connecting portion 11 is formed on the front section 1 of the rear longitudinal beam, and a second connecting portion 12 is formed on the first connecting portion 11;

Wherein, as shown in FIG. 2 , the front section 1 of the rear longitudinal beam is connected to the rocker inner panel 2 through the first connection portion 11 , and the first connection portion 11 has at least a lap joint with the rocker inner panel 2 . The two contact surfaces can be two contact surfaces, three contact surfaces, or four contact surfaces, etc. The design of the contact surface structure here is mainly to increase the contact area between the first connecting portion 11 and the inner panel 2 of the rocker, make the connection more reliable.

Wherein, the first connection portion 11 and the rocker inner panel 2 may be connected by mechanical connection, or welding, or a combination of mechanical connection and welding. It can be understood that using a combination of mechanical connection and welding to connect the first connection portion 11 and the rocker inner panel 2 has a better connection effect than mechanical connection or welding.

Wherein, as shown in FIG. 2 , the front section 1 of the rear longitudinal member is connected to the front cross member 3 of the rear floor through the second connecting portion 12 , and the second connecting portion 12 has an overlapping connection with the front cross member 3 of the rear floor The at least two contact surfaces can be two contact surfaces, three contact surfaces, or four contact surfaces, etc. The design of the contact surface structure here is mainly to increase the contact between the first connecting portion 11 and the rocker inner plate 2 area, making the connection more reliable.

Wherein, the second connection portion and the front cross beam of the rear floor may be connected by mechanical connection, or welding, or a combination of mechanical connection and welding. It can be understood that using a combination of mechanical connection and welding to connect the second connection portion 12 and the rear floor front cross member 3 has a better connection effect than mechanical connection or welding.

In this embodiment, the front section 1 of the rear longitudinal beam is overlapped with the rocker inner panel 2 through a first connecting portion 11 having at least two contact surfaces, and the front section 1 of the rear longitudinal beam also has at least two contact surfaces. The second connecting portion 12 of the rear floor overlaps with the front cross member 3 of the rear floor. In this way, the contact area between the rear longitudinal beam joint structure and the rocker inner panel 2 and the rear floor front cross member 3 can be increased. The stiffness and strength of the longitudinal beam joint structure are improved, which improves the NVH performance of the vehicle, and the rear longitudinal beam joint structure has better force transmission performance, which can better attenuate the collision energy, thereby avoiding excessive deformation of the rear floor and effectively improving the The deformation of the rear door opening of the vehicle when the vehicle is running on a twisted road can improve the driving safety of the electric vehicle.

In some embodiments, as shown in FIG. 5 , after the first connecting portion 11 and the rocker inner panel 2 are connected through the connecting member 4 , further welding is performed.

Wherein, as shown in FIG. 6 , after the second connecting portion 12 is connected with the rear floor front cross member 3 through the connecting member 4, further welding is performed.

Specifically, in this embodiment, the first connecting portion 11 and the second connecting portion 12 are integrally formed at the end position where the front section 1 of the rear longitudinal beam is connected to the inner panel 2 of the rocker. In this way, the entire rear longitudinal beam joint has superior stiffness and strength.

Wherein, the front section 1 of the rear longitudinal beam and the inner panel 2 of the sill can be connected by the FDS process and welded by the MIG welding process. The full English name of FDS is Flow Drill Screw, and the full Chinese name is rotary tapping and riveting; the full English name of MIG is metal inert-gas welding, the full Chinese name is molten polar inert gas shielded welding; that is, the front section 1 of the rear longitudinal beam and the inner panel 2 of the sill can be riveted by the FDS process and then welded by the MIG welding process. The riveted position of piece 4 and the position of the MIG welding point are shown in Figure 5.

Wherein, the front section 1 of the rear longitudinal beam and the rear front cross beam of the floor can also be connected by FDS and MIG welding processes, that is to say, the front section 1 of the rear longitudinal beam and the front cross beam 3 of the rear floor can be subjected to the FDS process first. After riveting, MIG welding is performed, wherein the riveted position of the connector 4 and the position of the MIG welding point are shown in FIG. 6 .

In one embodiment, the connecting member 4 is preferably a flow drill screw. Correspondingly, a plurality of connecting holes are provided on the front section 1 of the rear longitudinal beam, the front cross member 3 of the rear floor and the inner panel 2 of the rocker for the connecting member 4 Make a locked connection.

In some embodiments, the first connecting portion 11 is formed with a first installation groove, and three contact surfaces overlapped with the rocker inner plate 2 are formed in the first installation groove, and the rocker inner plate 2 Insert into the first installation groove for fixing.

Specifically, in this embodiment, a first installation groove is designed for embedding the rocker inner panel 2 , and the front section 1 of the rear longitudinal beam and the rocker inner panel 2 are connected through the embedded lap joint. It is very convenient, and has three contact surfaces, reliable connection, and good structural strength and force transmission of the joint.

In some embodiments, as shown in FIG. 5 , the first connection part includes a first plate part, and a second plate part 112 and a third plate part 113 are formed on one side of the first plate part 111 .

Wherein, one side surface of the first plate member 111 , the second plate member 112 and the third plate member 113 form the first connecting portion 11 .

The first installation groove is formed between the second plate 112 and the third plate 113 .

Wherein, the second plate 112 and the third plate 113 are vertically arranged on one side of the first plate 111 , and the second plate 112 and the third plate 113 are arranged in parallel.

Specifically, in this embodiment, the first installation groove is a U-shaped structure, the first plate member 111 is the middle portion of the U-shaped structure, and the second plate member 112 and the third plate member 113 are respectively The two side parts of the U-shaped structure; in this embodiment, the three contact surfaces of the first installation groove of the front section 1 of the rear longitudinal beam and the inner panel 2 of the rocker form a U-shaped structure as a whole, so that the rear The connection between the front section 1 of the longitudinal beam and the inner panel 2 of the rocker is more reliable, and the joint structure has superior strength when subjected to lateral force.

In some embodiments, the second plate member 112 and the third plate member 113 are respectively formed to extend outward from the upper edge and the lower edge of one side surface of the first plate member 111 , and the extending direction is perpendicular to the first plate member 111 . A board 111 .

In some embodiments, as shown in FIG. 7 , a first protrusion 114 is provided on one side of the first plate 111 , and a first protrusion 114 is provided on the rocker inner panel 2 at a position corresponding to the first protrusion 114 . An engaging groove, the first protrusion 114 is embedded in the first engaging groove.

Wherein, each of the first protrusions 114 and the first engaging grooves may be provided in several numbers, and the first protrusions 114 and the first engaging grooves are in one-to-one correspondence.

Wherein, the structure of the first protrusion 114 can be designed in any shape, such as a cylindrical shape, or a rectangular shape, and the present application is not limited thereto.

Wherein, the first engaging groove can be designed as a blind hole or a through hole. It can be understood that the shape of the first engaging groove matches the structure of the first protrusion 114, and can also be a cylindrical or rectangular body status, etc.

Specifically, in this embodiment, through the nesting of the first protrusion 114 and the first engaging groove, the number of the connecting pieces 4 can be effectively reduced, and the connecting strength in the axial direction and during rotation can be improved at the same time.

In some embodiments, the second connecting portion 12 is formed with a second installation groove, and three contact surfaces are formed in the second installation groove to overlap with the rear floor front beam 3 . The beam 3 is inserted into the second installation groove for fixing.

In this embodiment, a second installation slot is designed to embed the rear floor front beam 3, and the connection between the rear longitudinal beam front section 1 and the rear floor front beam 3 is very convenient through the embedding method. , and has three contact surfaces, the connection is reliable, and the joint structural strength and force transmission are good.

In some embodiments, as shown in FIG. 6 , the second connection portion includes a fourth plate 121 , a fifth plate 122 and a sixth plate formed on the other side of the first plate 111 123;

The other side of the first plate 111 , the fourth plate 121 , the fifth plate 122 and the sixth plate 123 form the first connecting part 11 , the fifth plate 122 and the sixth plate 123 The second installation groove is formed between 123;

The fourth plate 121 is disposed below the fifth plate 122 and the sixth plate 123 , and the fourth plate 121 is used to support the rear floor front cross member 3 .

Specifically, in this embodiment, the second installation groove is a U-shaped structure, the fourth plate 121 is the middle of the U-shaped structure, and the fifth plate 122 and the sixth plate 123 are respectively On the two sides of the U-shaped structure, the first plate member 111 forms a limit for the end of the front cross beam 3 of the rear floor;

Wherein, the fourth plate 121, the fifth plate 122 and the sixth plate 123 are vertically arranged on the other side of the first plate 111, and the fifth plate 122 and the sixth plate 123 are all perpendicular to the fourth plate 121, and the fifth plate 122 and the sixth plate 123 are arranged in parallel.

In this embodiment, the three contact surfaces of the second installation grooves in which the front section 1 of the rear longitudinal beam and the front cross member 3 of the rear floor are matched form a U-shaped structure as a whole, so that the front section 1 of the rear longitudinal beam and the rear floor The connection between the front cross members 3 is more reliable, and the joint structure has superior strength when subjected to lateral force.

In some embodiments, as shown in FIG. 8 , the fourth plate 121 is provided with a second protrusion 124 , and the rear floor front cross member 3 is provided with a second engaging position corresponding to the second protrusion 124 groove, the second protrusion 124 is embedded in the second engaging groove.

Wherein, each of the second protrusions 124 and the second engaging grooves may be provided in several numbers, and the number of the second protrusions 124 and the number of the second engaging grooves are in one-to-one correspondence.

Wherein, the structure of the second protrusion 124 can be designed in any shape, such as a cylindrical shape, or a rectangular shape, and the present application is not limited thereto.

Wherein, the second engaging groove can be designed as a blind hole or a through hole. It can be understood that the shape of the first engaging groove matches the structure of the first protrusion 114, and can also be a cylindrical or rectangular body status, etc.

Specifically, in this embodiment, through the nesting of the second protrusion 124 and the second engaging groove, the number of the connecting pieces 4 can be effectively reduced, and the connecting strength in the axial direction and during rotation can be improved at the same time.

In some embodiments, the first plate 111 , the second plate 112 , the third plate 113 , the fourth plate 121 , the fifth plate 122 and the sixth plate 123 are integrally formed to strengthen the rear longitudinal direction The strength of the beam joint structure.

In some embodiments, the front section 1 of the rear longitudinal beam, the front cross beam 3 of the rear floor and the inner panel 2 of the door sill are all made of aluminum alloy material, which can effectively reduce the weight of the vehicle body and improve the fuel economy of the vehicle.

Wherein, the front section 1 of the rear longitudinal beam can be made by a high pressure cast aluminum process, and the front cross beam 3 of the rear floor and the inner panel 2 of the rocker can be made by an extrusion molding process.

As the same concept, an embodiment of the second aspect of the present application provides an automobile, which includes the rear side member joint structure described in the embodiment of the first aspect.

It should be noted that in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations There is no such actual relationship or order between them.

In the description of this specification, description with reference to the terms "some embodiments" and the like means that a particular feature 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 do not necessarily refer to the same embodiment or example. Furthermore, the specific features described may be combined in any suitable manner in any one or more embodiments or examples.

Various embodiments of the present application have been described above, and the foregoing descriptions are exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A rear longitudinal beam joint structure, characterized in that it comprises a front section of a rear longitudinal beam, a front cross beam of a rear floor and an inner panel of a rocker; the front section of the rear longitudinal beam forms a first connecting portion, and a first connecting portion is formed on the first connecting portion. a second connecting part; The first connection part has at least two contact surfaces overlapping with the rocker inner plate, and the first connection part and the rocker inner plate are mechanically connected, or welded, or a combination of mechanical connection and welding. connection method to connect; The second connecting portion has at least two contact surfaces overlapping with the front cross member of the rear floor, and the second connecting portion and the front cross member of the rear floor are mechanically connected, or welded, or mechanically connected and welded. Connect in combination. 2 . The rear longitudinal beam joint structure according to claim 1 , wherein the first connecting portion and the inner panel of the rocker are connected by a connecting piece and then welded, and the second connecting portion is connected to the rear floor panel. 3 . The front cross member is welded by connecting pieces. 3 . The rear longitudinal beam joint structure according to claim 1 or 2 , wherein the first connecting portion is formed with a U-shaped first installation groove, and the first installation groove is formed with the door sill. 4 . The three contact surfaces where the inner plates overlap, and the inner plate of the door sill is embedded in the first installation groove for fixing. 4 . The rear side member joint structure of claim 3 , wherein the first connecting portion comprises a first plate, and a second plate and a third plate are formed on one side of the first plate. 5 . The first installation groove is formed between the second plate and the third plate. 5 . The rear longitudinal beam joint structure according to claim 4 , wherein a first protrusion is provided on one side of the first plate member, and the rocker inner plate corresponds to the position of the first protrusion. 6 . A first engaging groove is provided, and the first protrusion is embedded in the first engaging groove. 6 . The rear longitudinal beam joint structure according to claim 4 , wherein a U-shaped second installation groove is formed in the second connection part, and a U-shaped second installation groove is formed in the second installation groove, and the front side of the rear floor is formed in the second installation groove. 7 . The three contact surfaces where the beams overlap, and the front beams of the rear floor are embedded in the second installation grooves for fixing. 7. The rear side member joint structure of claim 6, wherein the second connecting portion comprises a fourth plate, a fifth plate, and a fourth plate formed on the other side of the first plate. the sixth plate; the second installation groove is formed between the fifth plate and the sixth plate; The fourth plate is disposed below the fifth plate and the sixth plate, and the fourth plate is used to support the rear floor front cross member. 8 . The rear longitudinal beam joint structure according to claim 7 , wherein a second protrusion is provided on the fourth plate, and a position corresponding to the second protrusion is provided on the rear floor front cross member. 9 . A second engaging groove, and the second protrusion is embedded in the second engaging groove. 9. The rear longitudinal beam joint structure according to any one of claims 1-2 and 4-8, wherein the front section of the rear longitudinal beam, the front cross beam of the rear floor and the inner panel of the door sill are all made of aluminum alloy materials to make. 10. An automobile, characterized by comprising the rear side member joint structure of any one of claims 1-9.