Automobile parcel shelf cross beam structure

Abstract

The invention discloses an automobile parcel shelf cross beam structure which comprises a parcel shelf upper cross beam and a parcel shelf cross beam body, the parcel shelf upper cross beam is arranged on the parcel shelf cross beam body and connected with the parcel shelf cross beam body to form a transverse cavity structure, and the automobile parcel shelf cross beam structure further comprises a pair of parcel shelf cross beam partition plates and a pair of side wall parcel shelf supporting plates used for being fixed to a side wall framework. And the end part of a transverse cavity structure formed by the parcel shelf upper cross beam and the parcel shelf cross beam body is connected with the side wall parcel shelf supporting plate on the corresponding side through a parcel shelf cross beam partition plate. The parcel shelf cross beam left and right partition plates and the parcel shelf cross beam body are welded into an assembly, then the assembly is welded with the side wall parcel shelf left and right supporting plates to form a stable beam-shaped structure, and then the assembly is welded with the parcel shelf upper cross beam again to form a closed rectangular cavity structure; the closed rectangular cavity structure effectively improves the torsional mode, bending rigidity and other performance indexes.

Description

Technical Field

[0001] The invention relates to the technical field of automobile bodies, and in particular to a crossbeam structure of an automobile parcel rack. Background Art

[0002] Among the current models, the rear parcel rack crossbeam structure of the three-box model serves as the torsional stiffness component of the vehicle body, forming a closed force transmission structure with the left and right support plates of the side parcel rack. It is one of the key annular structures in the rear assembly of the three-box car, and it also has a more obvious impact on the torsional stiffness of the vehicle body frame. At the same time, the parcel rack crossbeam structure also has a certain influence on improving the torsional mode and bending stiffness of the vehicle and other performance indicators.

[0003] The existing automobile parcel rack crossbeam structure is relatively simple, mostly a simple transverse cavity structure; for example, Chinese patent CN103770716A discloses an automobile parcel rack and a manufacturing method thereof, wherein the automobile parcel rack comprises: a parcel rack body and a front crossbeam, the front crossbeam comprises an upper connecting end and a lower connecting end, the parcel rack body comprises: a first body and a second body, the first body comprises a first connecting end and a second connecting end; the upper connecting end of the front crossbeam, the first connecting end of the first body and the second body are overlapped together, and the lower connecting end of the front crossbeam is overlapped with the second connecting end of the first body; the structure has the following problems: the local stiffness modal is low, resulting in abnormal noise during road tests; the structural strength is insufficient, resulting in cracking of welds; thereby endangering passenger safety and reducing passenger comfort. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a crossbeam structure of a car parcel rack, which can effectively enhance the structural strength of the parcel rack area and improve the local stiffness mode of the parcel rack.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The automobile parcel rack crossbeam structure comprises a parcel rack upper crossbeam and a parcel rack crossbeam body, wherein the parcel rack upper crossbeam is arranged on the parcel rack crossbeam body and connected to form a transverse cavity structure, and further comprises a pair of parcel rack crossbeam partitions and a pair of side parcel rack support plates for fixing on the side parcel frame; the end of the transverse cavity structure formed by the parcel rack upper crossbeam and the parcel rack crossbeam body is connected to the side parcel rack support plate on the corresponding side through the parcel rack crossbeam partition.

[0007] Further:

[0008] The parcel shelf crossbeam partition is located in the end of the transverse cavity structure to form a closed cavity structure.

[0009] The connecting structures at both ends of the transverse cavity structure are symmetrically arranged.

[0010] Two inward-turned connecting plates are arranged on the inner side of the edge of the parcel shelf crossbeam partition, one of which is welded to the upper crossbeam of the parcel shelf, and the other is welded to the parcel shelf crossbeam body.

[0011] The edge of the parcel shelf crossbeam partition is provided with an outward-turned connecting plate toward the outside, and the outward-turned connecting plate is placed on the side enclosure parcel shelf support plate and is welded and connected.

[0012] The rear edge of the parcel shelf upper crossbeam and the parcel shelf crossbeam body is connected to the parcel shelf body of the parcel shelf.

[0013] The parcel shelf crossbeam partition is welded to the parcel shelf crossbeam body as an assembly, and then welded to the side parcel shelf support plate to form a stable beam structure, and then welded to the parcel shelf upper crossbeam again to form a closed rectangular cavity structure.

[0014] The cross-section of the parcel shelf cross member bulkhead is a "Z"-shaped structure.

[0015] The inward-turned connecting plate is located on the inner side of the end of the transverse cavity structure.

[0016] The front edge of the parcel shelf body is located between the parcel shelf upper crossbeam and the parcel shelf crossbeam body and is connected to form a butt connection structure, and the butt connection structure is placed on the side enclosure parcel shelf support plate and is welded and connected.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The parcel rack crossbeam structure of the vehicle is reasonably designed. The left and right partitions of the parcel rack crossbeam are welded to the parcel rack crossbeam body as an assembly, which is then welded to the left and right support plates of the side parcel rack to form a stable beam structure, and then welded to the upper crossbeam of the parcel rack again to form a closed rectangular cavity structure; the closed rectangular cavity structure effectively improves its performance indicators such as torsional mode and bending stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 This is a schematic diagram of the parcel rack of the present invention being mounted on a vehicle body.

[0021] Figure 2 It is a schematic diagram of the parcel rack crossbeam structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the crossbeam assembly of the present invention.

[0023] Figure 4 It is a schematic diagram of the cross beam on the parcel shelf of the present invention.

[0024] Figure 5 It is a schematic diagram of the parcel shelf crossbeam body of the present invention.

[0025] Figure 6 This is a schematic diagram of the end connection of the present invention.

[0026] Figure 7 It is a schematic diagram of the cross beam partition of the parcel shelf of the present invention.

[0027] Figure 8 It is a partial enlarged schematic diagram of the connection part of the present invention.

[0028] Fig. 9 For along Figure 8 AA section diagram.

[0029] Fig.10 For along Figure 8 Schematic diagram of the BB cross-section.

[0030] In the figure:

[0031] 101. Parcel shelf upper crossbeam, 102. Parcel shelf crossbeam body, 2. Parcel shelf body, 3. Rear windshield crossbeam, 4. Side wall frame, 501. Side wall parcel shelf support plate I, 502. Side wall parcel shelf support plate II, 6. Welding point, 7. Parcel shelf crossbeam partition. DETAILED DESCRIPTION

[0032] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0033] like Figures 1 to 10 As shown, the parcel shelf crossbeam structure of the automobile includes a parcel shelf upper crossbeam 101, a parcel shelf crossbeam body 102, a parcel shelf body 2, a rear windshield crossbeam 3, a side enclosure parcel shelf support plate I501, a side enclosure parcel shelf support plate II502 and a parcel shelf crossbeam partition 7; the left and right partitions of the parcel shelf crossbeam are connected to the parcel shelf upper crossbeam and the parcel shelf crossbeam body through welding points to form a closed cavity structure, and are connected to the left and right support plate welding points of the side enclosure parcel shelf to form a ring structure, which effectively improves the stiffness and mode of the parcel shelf area.

[0034] The automobile parcel rack crossbeam structure of the present invention is reasonably designed. The left and right partitions of the parcel rack crossbeam are welded to the parcel rack crossbeam body as an assembly, and then welded to the left and right support plates of the side parcel rack to form a stable beam structure, and then welded to the upper crossbeam of the parcel rack again to form a closed rectangular cavity structure; the closed rectangular cavity structure effectively improves its performance indicators such as torsional mode and bending stiffness.

[0035] Preferably,

[0036] The parcel shelf upper crossbeam 101 is located above the parcel shelf crossbeam body 102. The transverse lengths of the parcel shelf upper crossbeam and the parcel shelf crossbeam body are substantially the same. The parcel shelf upper crossbeam is arranged on the parcel shelf crossbeam body and welded together to form a transverse cavity structure.

[0037] The parcel shelf cross beam partitions are a pair of parcel shelf cross beam partitions symmetrically arranged on the left and right, and the side parcel shelf support plates are fixed on the side parcel frame of the vehicle body, and the side parcel shelf support plates are also a pair of side parcel shelf support plates symmetrically arranged on the left and right; that is, the connecting structures at both ends of the transverse cavity structure are symmetrically arranged to form a closed rectangular cavity structure, which effectively improves its performance indicators such as torsional mode and bending stiffness.

[0038] A pair of parcel shelf cross beam partitions 7 are respectively a left parcel shelf cross beam partition and a right parcel shelf cross beam partition, and a pair of side parcel shelf support plates are respectively a side parcel shelf support plate Ⅰ501 and a side parcel shelf support plate Ⅱ502; the ends of the transverse cavity structure formed by the parcel shelf upper beam and the parcel shelf cross beam body are connected to the side parcel shelf support plate on the corresponding side through the parcel shelf cross beam partition.

[0039] The parcel shelf crossbeam partition is located in the end of the transverse cavity structure to form a closed cavity structure; the closed rectangular cavity structure effectively improves its performance indicators such as torsional mode and bending stiffness; the left and right partitions of the parcel shelf crossbeam are arranged and connected by welds, which effectively improves the structural strength, reduces weld stress and avoids cracking problems.

[0040] Two inward-turned connecting plates are provided on the inner side of the edge of the parcel shelf cross beam partition. The two inward-turned connecting plates are arranged corresponding to the adjacent edges of the parcel shelf cross beam partition. There is a gap between the two inward-turned connecting plates. One inward-turned connecting plate is welded to the cross beam on the parcel shelf, and the other inward-turned connecting plate is welded to the parcel shelf cross beam body.

[0041] An outward-folding connecting plate is provided on the edge of the parcel shelf cross beam partition toward the outside; further, there are two outward-folding connecting plates, which are arranged corresponding to adjacent edges of the parcel shelf cross beam partition, with a gap between the two outward-folding connecting plates, and the two outward-folding connecting plates are placed on the side parcel shelf support plate and welded to each other.

[0042] The cross section of the parcel shelf cross beam partition is a "Z"-shaped structure. The ends of the through cross beam structure can be reliably connected to the corresponding side parcel shelf support plates through a parcel shelf cross beam partition. The structure is compact, firm and reliable. The parcel shelf upper cross beam, the parcel shelf cross beam body and the parcel shelf cross beam partition can all be formed by stamping, which is simple to manufacture and relatively low in cost.

[0043] The specific implementation process of the structure of the present invention is:

[0044] The left and right partitions of the parcel shelf cross beam are welded to the parcel shelf cross beam body as an assembly, and then welded to the left and right support plates of the side panel parcel shelf to form a stable beam structure, and then welded to the upper cross beam of the parcel shelf again to form a closed rectangular cavity structure; the left and right partitions of the parcel shelf cross beam are welded at the connection between the parcel shelf cross beam and the side panel support plates; the structural strength of the parcel shelf area is strengthened.

[0045] The inward-turned connecting plate is located on the inner side of the end of the transverse cavity structure, and the outward-turned connecting plate extends from the end of the transverse cavity and rests on the bent part of the side wrap frame support plate. The structure is compact and the structural strength is improved.

[0046] The rear edge of the parcel shelf upper cross beam and the parcel shelf cross beam body is connected to the parcel shelf body of the parcel shelf. Further, the front edge of the parcel shelf body is located between the parcel shelf upper cross beam and the parcel shelf cross beam body and is connected to form a butt connection structure, which is welded on the side wall parcel shelf support plate and extends into the laminated lap welding to improve the local stiffness mode of the parcel shelf.

[0047] The upper crossbeam of the parcel shelf and the parcel shelf crossbeam body are both bent structures to improve structural strength; the corresponding front and rear parts of the upper crossbeam of the parcel shelf and the parcel shelf crossbeam body are welded together, and cooperate with the parcel shelf crossbeam partition to form a closed transverse cavity structure; rear side windshield crossbeams 3 are arranged in parallel at the rear of the transverse cavity structure, and the parcel shelf body is a panel with an opening in the middle. The parcel shelf body is arranged between the transverse cavity structure and the rear windshield crossbeam, and the side is formed with an overall circular structure through the side frame 4 to improve the torsional stiffness of the parcel shelf and enhance the NVH performance.

[0048] The bending angles of the parcel shelf upper beam and the parcel shelf crossbeam body are both greater than 90 degrees, and the edges of the parcel shelf upper beam and the parcel shelf crossbeam body form flush edges, which are easy to connect and improve the torsional stiffness of the parcel shelf; the parcel shelf upper beam is provided with corresponding mounting holes for the components that need to be installed, and weight-reducing holes are provided on the parcel shelf crossbeam partition body, which meets the use function while achieving a lightweight design.

[0049] like Fig. 9 and Fig.10 As shown, the two inward-turned connecting plates corresponding to the parcel shelf upper beam are located at the upper part and the front part, and are connected by spot welding; the two outward-turned connecting plates corresponding to the parcel shelf crossbeam body are located at the lower part and the rear part, and the outward-turned connecting plates are connected to the parcel shelf crossbeam body by spot welding 6. The inward-turned connecting plates and the outward-turned connecting plates are staggered to facilitate the connection operation, and the deformation caused by welding is small, so the connection accuracy can be better controlled.

[0050] Preferred specific examples are:

[0051] like Figure 6As shown, the parcel shelf cross beam body 102 and the parcel shelf cross beam partition 7 are first welded into a parcel shelf cross beam assembly, and then welded with the parcel shelf left support plate assembly and the parcel shelf right support plate assembly to form the inner main assembly; the left and right ends of the parcel shelf cross beam partition welding area are respectively overlapped and fixed with the parcel shelf cross beam body and the parcel shelf left support plate assembly and the parcel shelf right support plate assembly, and the cross section of the parcel shelf cross beam partition is constructed in a "Z" shape, thereby improving the structural strength and stability of the connection between the parcel shelf cross beam assembly and the parcel shelf left / right support plate assembly, and then the parcel shelf upper cross beam and the parcel shelf body fall in the Z direction again Figure 2 The closed rectangular cavity structure is formed by welding on the main assembly. It effectively optimizes the mechanical transmission of the left and right side panels, suppresses the vibration and deformation caused by bending and torsion in the rear area of ​​the side panels, improves the structural strength of the parcel shelf, improves the torsional rigidity of the parcel shelf, and improves the NVH performance.

[0052] To summarize, the present invention provides a parcel shelf crossbeam partition structure, which is connected and penetrated with the parcel shelf upper crossbeam and the parcel shelf crossbeam body through welds to form a closed cavity structure, and is connected with the left and right support plates of the side panel parcel frame through welds to form a ring structure, effectively improving the stiffness and mode of the parcel shelf area.

[0053] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0054] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A crossbeam structure of a car parcel rack, comprising a parcel rack upper crossbeam and a parcel rack crossbeam body, wherein the parcel rack upper crossbeam is arranged on the parcel rack crossbeam body and connected to form a transverse cavity structure, characterized in that: It also includes a pair of parcel shelf crossbeam partitions and a pair of side parcel shelf support plates for fixing on the side parcel frame; the ends of the transverse cavity structure formed by the parcel shelf upper crossbeam and the parcel shelf crossbeam body are connected to the side parcel shelf support plates on the corresponding sides through the parcel shelf crossbeam partitions.

2. The crossbeam structure of the automobile parcel rack as claimed in claim 1, characterized in that: The parcel shelf crossbeam partition is located in the end of the transverse cavity structure to form a closed cavity structure.

3. The crossbeam structure of the automobile parcel rack as claimed in claim 1, characterized in that: The connecting structures at both ends of the transverse cavity structure are symmetrically arranged.

4. The crossbeam structure of the automobile parcel rack as claimed in claim 1, characterized in that: Two inward-turned connecting plates are arranged on the inner side of the edge of the parcel shelf crossbeam partition, one of which is welded to the upper crossbeam of the parcel shelf, and the other is welded to the parcel shelf crossbeam body.

5. The cross beam structure of the automobile parcel rack as claimed in claim 1 or 4, characterized in that: The edge of the parcel shelf crossbeam partition is provided with an outward-turned connecting plate facing outward, and the outward-turned connecting plate is placed on the side enclosure parcel shelf support plate and is welded and connected.

6. The crossbeam structure of the automobile parcel rack as claimed in claim 1, characterized in that: The rear edge of the parcel shelf upper crossbeam and the parcel shelf crossbeam body is connected to the parcel shelf body of the parcel shelf.

7. The crossbeam structure of the automobile parcel rack as claimed in claim 2, characterized in that: The parcel shelf crossbeam partition is welded to the parcel shelf crossbeam body as an assembly, and then welded to the side parcel shelf support plate to form a stable beam structure, and then welded to the parcel shelf upper crossbeam again to form a closed rectangular cavity structure.

8. The crossbeam structure of the automobile parcel rack as claimed in claim 5, characterized in that: The cross-section of the parcel shelf cross member bulkhead is configured as a "Z" shape.

9. The cross beam structure of the automobile parcel rack as claimed in claim 5, characterized in that: The inwardly turned connecting plate is located on the inner side of the end of the transverse cavity structure.

10. The cross beam structure of the automobile parcel rack as claimed in claim 6, characterized in that: The front edge of the parcel shelf body is located between the parcel shelf upper crossbeam and the parcel shelf crossbeam body and is connected to form a butt connection structure, and the butt connection structure is placed on the side enclosure parcel shelf support plate and is welded and connected.

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