CN214823604U - Front longitudinal beam assembly and vehicle - Google Patents

Abstract

The application discloses front longitudinal assembly and vehicle belongs to vehicle front longitudinal assembly manufacturing and designing field. The front longitudinal beam assembly comprises: the front longitudinal beam body is a beam body with a cavity; connect in the front end plate assembly of this tip of front longitudinal, the front end plate assembly includes: the front longitudinal beam comprises a front end plate and a positioning plate integrally formed on the front end plate, wherein the positioning plate is inserted in the cavity and used for limiting the connecting position between the front longitudinal beam body and the front end plate. The application provides a front longitudinal assembly's manufacturing cost is lower and connect the reliability higher.

Description

Front longitudinal beam assembly and vehicle

Technical Field

The application relates to the field of vehicle supporting components, in particular to a front longitudinal beam assembly.

Background

The front structure of the front longitudinal beam assembly of the passenger vehicle comprises a longitudinal beam outer plate and a longitudinal beam inner plate which form a longitudinal beam body and a front end plate positioned at the end part, wherein the three parts are connected in a welding connection or spot welding connection mode. Both of these approaches have their own technical problems.

The welding method is adopted, and the specific welding process is as shown in fig. 1, wherein firstly, the longitudinal beam inner plate 012 and the longitudinal beam outer plate 011 are welded and formed, and then are connected with the front end plate 020 in a welding mode, so as to form the front longitudinal beam assembly 01. This approach has the following problems: 1) the problem of front end plate welding deformation, the front end plate deformation reduces the installation accuracy of automobile front installation parts, influences the clearance matching of automobile body front face appearance pieces such as a bonnet, a front protective skin and a headlamp, and shows as the problem of uneven parting size clearance. 2) The welding seam connection strength is weak and the welding quality is difficult to ensure. The welding seam connection strength is weak, and the welding quality is difficult to ensure. In the collision process of the vehicle body, the welding seam is easy to crack to cause connection failure, the collision deformation mode is unstable, and the safety of the whole vehicle is reduced. 3) The welding is not friendly to the environment and is not good for the health of workers on site. Light, gas and the like generated by the welding process are not friendly to the environment, are not healthy to workers operating on site, and have poor working environment. 4) The welding requires a separate design station and operating beat length. The welding needs to be operated on an independent design station, which is not beneficial to factory automation and flexibility. The length of the welding time is longer than that of the spot welding time, and a longer production beat is needed, so that the cost of the whole vehicle is increased. In a spot welding connection mode, as shown in fig. 2, in a specific welding process, firstly, a longitudinal beam inner plate 031 and a longitudinal beam outer plate 32 are respectively connected with a separately designed connecting support 040 in a spot welding mode, connecting supports 040 with different sizes are developed according to the sizes of different front longitudinal beams, the connecting supports 040 are realized by connecting 2 independent supports in a spot welding mode, and the connecting supports 040 are used as the middle parts of a front longitudinal beam sub-assembly connected with a front end plate 050 and are connected through spot welding. And spot welding the front end plate 050 with the connecting bracket 40 to form a front longitudinal beam assembly 02. This approach has the following problems: the separately designed connecting supports are connected through spot welding, so that the precision of the front end plate can be improved, but the weight and the cost of the whole vehicle are increased.

Content of application

Based on the above technical problem of prior art, this application provides a front longitudinal assembly and vehicle that cost is lower and connection reliability is higher.

In view of the above technical problems, the present application provides the following technical solutions:

a front rail assembly, comprising: the front longitudinal beam body is a beam body with a cavity; connect in the front end plate assembly of this tip of front longitudinal, the front end plate assembly includes: the front longitudinal beam comprises a front end plate and a positioning plate integrally formed on the front end plate, wherein the positioning plate is inserted in the cavity and used for limiting the connecting position between the front longitudinal beam body and the front end plate.

In some embodiments of the present application, the positioning plate abuts against an inner wall of the front longitudinal beam body.

In some embodiments of the present application, the positioning plate includes a first support plate and a second support plate, the first support plate abuts against the top surface of the inner wall of the front longitudinal beam body, and the second support plate abuts against the side surface of the inner wall of the front longitudinal beam body.

In some embodiments of the present application, the positioning plate includes a third support plate, and the third support plate abuts against the bottom surface of the inner wall of the front side member body.

In some embodiments of the present application, the front side member body includes a side member outer plate and a side member inner plate, and the side member outer plate and the side member inner plate are welded and connected to each other and enclose a beam body having a cavity.

In some embodiments of the present application, the inner stringer plate is formed as a U-shaped plate, and the outer stringer plate is formed as a flat plate.

In some embodiments of the application, the locating plate further comprises an L-shaped support plate arranged on the front end plate, one side of the L-shaped support plate is welded on the front end plate, and the other side of the L-shaped support plate abuts against the inner side wall of the outer plate of the longitudinal beam.

In some embodiments of the present application, the L-shaped support plate has a stiffener at a corner between the two side plate surfaces.

In some embodiments of the present application, the first, second, and third struts are formed as trapezoidal plates.

The present application simultaneously provides a vehicle, and it includes above-mentioned front longitudinal assembly.

Compared with the prior art, the technical scheme of the application has the following technical effects:

in the front longitudinal assembly and the vehicle that this application provided, because integrated into one piece has the locating plate on the front end plate in the front longitudinal assembly, the locating plate is pegged graft in the cavity of front longitudinal body, has realized the reliable location of front end plate with the front longitudinal body, and then makes to carry out spot welding between front end plate and the front longitudinal body and is connected and can realize reliable connection between them. Meanwhile, the forming process can be simplified by the mode that the front end plate and the positioning plate are integrally formed, and compared with the existing mode that a connecting piece is arranged between the front end plate and the longitudinal beam body, the whole vehicle weight is reduced, and the production efficiency of the front longitudinal beam assembly is improved.

Drawings

The objects and advantages of this application will be appreciated by the following detailed description of the preferred embodiments thereof, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a prior art welding process for a front rail assembly joined by welding;

FIG. 2 is a prior art welding process for a front rail assembly joined by spot welding;

FIG. 3 is a flow chart illustrating welding of one embodiment of a front rail assembly of the present application;

FIG. 4 is a schematic structural view of one embodiment of a front rail assembly of the present application;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is another structural schematic view of an embodiment of a front rail assembly of the present application;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 is a schematic view of one embodiment of a front end panel assembly of the front rail assembly of the present application;

FIG. 10 is a schematic structural view of an L-shaped strut in a front rail assembly of the present application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

The following is an embodiment of a front side member assembly according to the present application, as shown in fig. 3, the front side member assembly including: a front longitudinal beam body 20 and a front end plate assembly 10 connected to the end of the front longitudinal beam body 20. The front longitudinal beam body 20 is a beam body with a cavity; the front end plate assembly 10 includes: the front longitudinal beam comprises a front end plate 11 and a positioning plate 12 connected to the front end plate 11, wherein the positioning plate 12 is inserted into the cavity and used for limiting the connection position between the front longitudinal beam body 20 and the front end plate 11.

In the front longitudinal beam assembly, as shown in fig. 3 to 8, the positioning plate 12 is integrally formed on the front end plate 11, and the positioning plate 12 is inserted into the cavity of the front longitudinal beam body 20, so that the front end plate 11 and the front longitudinal beam body 20 are reliably positioned, and further, the front end plate 11 and the front longitudinal beam body 20 are reliably connected by spot welding. Meanwhile, the forming process can be simplified by the mode that the front end plate 11 and the positioning plate 12 are integrally formed, and the production efficiency of the front longitudinal beam assembly is improved on the premise that the weight of the whole vehicle is not improved.

Specifically, the positioning plate 12 and the front end plate 11 are integrally formed by stamping, and when the positioning plate 12 is provided in a plurality of shapes, the positioning plate can be formed by stamping once, compared with the existing mode that a single connecting component is arranged between the front end plate 11 and the front longitudinal beam body 20, the manufacturing process of the front longitudinal beam assembly is simple, and the production efficiency is improved.

Specifically, the positioning plate 12 positions the front side member body 20 and the front end plate 11 by abutting against an inner wall of the front side member body 20.

Specifically, the positioning plate 12 includes at least two independent plate bodies, which can position the front side member body 20 in the up-down direction and the left-right direction.

As shown in fig. 9, in one embodiment, the positioning plate 12 includes a first support plate 121, a second support plate 122, and a third support plate 123, the first support plate 121 abuts against an inner wall top surface of the front side member body 20, the second support plate 122 abuts against an inner wall side surface of the front side member body 20, and the third support plate 123 abuts against an inner wall bottom surface of the front side member body 20. The first brace 121, the second brace 122, and the third brace 123 support three surfaces, thereby reliably positioning the front side member body 20 and enabling the front side member body 20 to be welded to a set position of the front end plate 11.

The front side member body 20 is not formed in a unique manner, and in one embodiment, the front side member body 20 may be made of square steel or rectangular steel. Because the model sizes of the square steel and the rectangular steel are relatively single and fixed, for the front longitudinal beam body 20 of different vehicle types, the size needs to be determined according to other matching parts and the integral supporting strength.

Therefore, in another embodiment, as shown in fig. 3 and 5, the front side member body 20 includes a side member outer panel 22 and a side member inner panel 21, and the side member outer panel 22 and the side member inner panel 21 are welded and connected to each other to enclose a beam body having a cavity. More specifically, the side member inner panel 21 is integrally formed as a U-shaped panel, and the side member outer panel 22 is formed as a flat panel. The end of the U-shaped plate is provided with a flange, and the surface of the longitudinal beam outer plate 22 is welded on the flange.

The front longitudinal beam body 20 is composed of two parts, namely a longitudinal beam outer plate 22 and a longitudinal beam inner plate 21, the longitudinal beam outer plate 22 is a flat plate, the longitudinal beam inner plate 21 is a U-shaped plate, the size of the longitudinal beam inner plate can be adjusted according to different requirements, the flexibility is high, and meanwhile, the front longitudinal beam body 20 is composed of two parts, so that the connection mode of the front longitudinal beam body 20 and the front end plate assembly 10 is flexible. Specifically, as shown in fig. 3, the side member inner panel 21 is moved in the X direction (the front-rear direction of the vehicle body) or the Y direction (the left-right direction of the vehicle body) to be close to the front end plate assembly 10, and the first, second, and third leg plates 121, 122, 123 are welded to each other, and the side member outer panel 22 is welded to the burring of the side member inner panel 21.

The welding position of the front end plate 11 and the longitudinal beam inner plate 21 can be selected as the inner part, so that no welding seam exists between the outer sides of the front end plate 11 and the longitudinal beam inner plate 21, the integral appearance of the front longitudinal beam assembly is attractive, and the mode of performing spot welding on the inner part and the outer part of the front end plate 11 and the longitudinal beam inner plate 21 can be selected to improve the connection reliability of the front end plate 11 and the longitudinal beam inner plate 21.

More specifically, the first support plate 121, the second support plate 122, and the third support plate 123 of the front end plate assembly 10 respectively abut against the upper surface, the side surface, and the lower surface of the U-shaped plate, so that the end portion of the side member inner plate 21 can be effectively supported and positioned.

In order to further improve the positioning reliability of the side member outer panel 22, as shown in fig. 3, the positioning plate 12 further includes an L-shaped support plate 124 provided on the front end plate 11, one plate surface of the L-shaped support plate 124 is welded to the front end plate 11, and the other plate surface abuts against the inner side wall of the side member outer panel 22. The L-shaped support plate 124 is arranged to be in surface contact with the front end plate 11, so that the connection strength of the L-shaped support plate and the front end plate 11 is improved, meanwhile, due to the fact that the support plate is inserted into the cavity in a support plate mode of direct punch forming of the front end plate 11 and matching of the inner wall of the longitudinal beam outer plate 22, the support plate is not enough in length and is not reliable enough in connection, the length and the width of the surface of the L-shaped plate can be selected by singly increasing the L-shaped support plate 124 according to conditions, the distance between the L-shaped plate and the inner wall of the longitudinal beam outer plate 22 is large, and the connection reliability of the L-shaped support plate and the longitudinal beam outer plate is improved.

In order to improve the strength of the L-shaped plate 124, as shown in fig. 10, the L-shaped plate 124 further includes a reinforcing rib 124a located at a corner between two side plate surfaces, more specifically, the reinforcing rib 124a is a reinforcing protrusion protruding to the outside of the L-shaped plate 124, and the number of the reinforcing ribs 124a is 2.

In order to facilitate the forming of the positioning plate 12 and the insertion, the first support plate 121, the second support plate 122, and the third support plate 123 are formed into a trapezoidal plate, specifically, before the front end plate 11 is stamped, a groove of a stamping forming structure of the first support plate 121, the second support plate 122, and the third support plate 123 may be formed on a plate surface thereof, and when the stamping machine stamps, the groove may be broken along the groove to form the first support plate 121, the second support plate 122, and the third support plate 123.

When the structure of the front longitudinal beam assembly is adopted for welding, as shown in fig. 3, the following welding process is adopted:

firstly, integrally forming a front end plate 11, a first support plate 121, a second support plate 122 and a third support plate 123 through a stamping process, welding an L-shaped bracket on a stamped front end plate assembly 10, and enabling one side end face of the L-shaped bracket to be welded on the front end plate 11 and the other side end face of the L-shaped bracket to be parallel and opposite to the second support plate 122; abutting the inner wall of the inner stringer plate 21 against the first support plate 121, the second support plate 122 and the third support plate 123, and performing spot welding connection on the inner wall and the front end plate 11; and abutting the inner wall of the longitudinal beam outer plate 22 against the L-shaped support plate 124, and respectively welding the longitudinal beam outer plate 22 with the longitudinal beam inner plate 21 and the front end plate 11 to complete the connection and fixation of the front side area of the whole front longitudinal beam assembly.

This application provides the concrete implementation mode of a vehicle simultaneously, the vehicle adopts the structure of above-mentioned front longitudinal assembly, and it is no longer repeated here.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the present application.

Claims (10)

1. A front rail assembly, comprising:

the front longitudinal beam body is a beam body with a cavity;

connect in the front end plate assembly of this tip of front longitudinal, the front end plate assembly includes:

the front longitudinal beam comprises a front end plate and a positioning plate integrally formed on the front end plate, wherein the positioning plate is inserted in the cavity and used for limiting the connecting position between the front longitudinal beam body and the front end plate.

2. A front rail assembly as set forth in claim 1 wherein: the positioning plate is abutted against the inner wall of the front longitudinal beam body.

3. A front rail assembly as set forth in claim 2 wherein: the positioning plate comprises a first support plate and a second support plate, the first support plate is abutted to the top surface of the inner wall of the front longitudinal beam body, and the second support plate is abutted to the side surface of the inner wall of the front longitudinal beam body.

4. A front rail assembly as set forth in claim 3 wherein: the positioning plate comprises a third support plate, and the third support plate is abutted to the bottom surface of the inner wall of the front longitudinal beam body.

5. A front rail assembly according to any one of claims 1 to 4, wherein: the front longitudinal beam body comprises a longitudinal beam outer plate and a longitudinal beam inner plate, wherein the longitudinal beam outer plate and the longitudinal beam inner plate are connected in a welding mode and enclose a beam body with a cavity.

6. The front rail assembly of claim 5, wherein: the longitudinal beam inner plate is formed into a U-shaped plate, and the longitudinal beam outer plate is formed into a plane plate.

7. The front rail assembly of claim 5, wherein: the positioning plate further comprises an L-shaped support plate arranged on the front end plate, one side plate surface of the L-shaped support plate is welded on the front end plate, and the other side plate surface of the L-shaped support plate abuts against the inner side wall of the outer plate of the longitudinal beam.

8. The front rail assembly of claim 7, wherein: and reinforcing ribs are arranged at corners between the two intersected side plates of the L-shaped support plate.

9. A front rail assembly as set forth in claim 3 wherein: the first support plate, the second support plate and the third support plate are formed into trapezoidal plates.

10. A vehicle comprising a front rail assembly as claimed in any one of claims 1 to 9.

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