Van back door assembly

Abstract

The utility model provides a back door assembly of a van, which relates to the field of back doors of trucks, and adopts the technical scheme that the back door assembly comprises a left back door component and a right back door component, the left back door component and the right back door component respectively comprise an outer skin and a framework component from outside to inside, and the back door assembly is characterized in that the framework component is of a rectangular structure; the framework assembly comprises a first cross beam, a second cross beam, a first vertical rod and a second vertical rod, the first cross beam and the second cross beam are oppositely arranged, the cross sections of the first cross beam and the second cross beam are each of an n-shaped structure, and the first vertical rod and the second vertical rod are oppositely arranged. The first cross beam, the second cross beam, the first vertical rod and the second vertical rod are all made of aluminum alloy materials. The strength of the back door assembly is improved, the weight of the back door assembly can be further reduced, and light weight is achieved.

Description

Technical Field

[0001] This utility model relates to the field of truck tailgates, and more particularly to a tailgate assembly for a van. Background Technology

[0002] Box trucks, also known as vans, are mainly used for the fully enclosed transport of various goods. Special types of box trucks can also transport hazardous chemicals. Box trucks offer advantages such as maneuverability, ease of operation, high efficiency, large transport capacity, efficient use of space, safety, and reliability during transportation.

[0003] In the prior art, Chinese utility model patent with authorization announcement number CN221417910U discloses a tailgate assembly structure for a lightweight logistics vehicle, including a left tailgate assembly, with a right tailgate assembly located to the left of the left tailgate assembly. The left tailgate assembly includes a left tailgate frame assembly, with a left tailgate outer skin fixed to the rear surface of the left tailgate frame assembly and a left tailgate interior panel fixed to the front surface of the left tailgate frame assembly. The right tailgate assembly includes a right tailgate frame assembly. The rear surface of the right rear tailgate frame assembly is fixed with the right rear tailgate outer skin, and the front surface of the right rear tailgate frame assembly is fixed with the right rear tailgate interior trim. The left rear tailgate outer skin, the right rear tailgate outer skin, the left rear tailgate frame assembly, and the right rear tailgate frame assembly are all made of lightweight high-strength steel, and the left and right rear tailgate interior trim panels are made of ABS material. This technical solution can reduce the overall weight of the tailgate assembly, reduce energy consumption, and thus reduce vehicle operating costs.

[0004] Using the above technical solutions, the outer skin and frame assembly formed by high-strength steel stamping are still relatively heavy. If the outer skin and frame assembly are made of aluminum alloy plates or aluminum alloy profiles, the weight of the back door can be reduced. However, because aluminum alloy plates are poorly formed, it is difficult to reflect relatively complex or numerous styling features, and it is also difficult to guarantee the A-grade surface quality requirements. In addition, it is necessary to re-open the outer panel mold, resulting in a large investment in molds. Utility Model Content

[0005] To address the technical problem of excessive weight of the rear doors of vans in the prior art, this utility model provides a rear door assembly for vans that can further reduce the weight of the rear door assembly while ensuring its strength, thus achieving lightweighting.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a rear door assembly for a van, including a left rear door assembly and a right rear door assembly. The left rear door assembly and the right rear door assembly each include an outer skin and a frame assembly from the outside to the inside. The frame assembly has a rectangular structure and includes a first crossbeam, a second crossbeam, a first vertical rod, and a second vertical rod. The first crossbeam and the second crossbeam are arranged opposite each other and have a Z-shaped cross-section. The first vertical rod and the second vertical rod are arranged opposite each other. The second vertical rods of the left rear door assembly and the right rear door assembly are adjacent. The first vertical rod has a Z-shaped cross-section. The first crossbeam, the second crossbeam, the first vertical rod, and the second vertical rod are all made of aluminum alloy.

[0007] This invention optimizes the moment of inertia of the cross sections of the first and second crossbeams, the first and second vertical bars by using a frame component with a Z-shaped cross section, thereby improving bending resistance and significantly enhancing the strength of the frame component. Even after using aluminum alloy materials, the strength of the entire rear door assembly can still be guaranteed, achieving a lightweight effect.

[0008] Furthermore, the skeleton assembly also includes a reinforcing beam, which is horizontally disposed between the first vertical rod and the second vertical rod, and the cross-section of the reinforcing beam has a Z-shaped structure.

[0009] This invention increases the moment of inertia by setting a reinforcing beam with a Z-shaped cross-section, and transmits the force in multiple directions, avoiding stress concentration, enhancing the support strength of vertical rod one and vertical rod two, and effectively preventing deformation of the frame components.

[0010] Furthermore, the reinforcing beam is bonded to the outer skin.

[0011] This invention enhances the supporting strength of the outer skin by bonding the reinforcing beam to the outer skin, and the bonding eliminates the need for corresponding connectors, thus further achieving weight reduction.

[0012] Furthermore, the second vertical rod includes a rod body, and two mounting parts are horizontally arranged on opposite sides of the two rod bodies. The two mounting parts are staggered inside and outside. The mounting part located on the inner side is provided with a sealing strip, and the outer surface of the mounting part located on the outer side is coplanar with the outer surface of the rod body connected to it.

[0013] Furthermore, the sealing strip includes a connecting portion and a buffer portion. The connecting portion is sleeved on the corresponding mounting portion, and the buffer portion has a hollow structure and can abut against the inner surface of another mounting portion.

[0014] This invention enhances the cushioning capacity of the sealing strip by employing a buffer section with a hollow structure.

[0015] Furthermore, the outer skin has an edge trim corresponding to the main body of the rod, the edge trim wraps around the mounting part with the connecting part, and the connecting part wraps the corresponding edge trim inside.

[0016] This utility model uses an edge-wrapping method to install the sealing strip on the same mounting part, which ensures the connection strength between the second vertical rod and the outer skin while reducing the space occupied by related connection structures.

[0017] Furthermore, the first vertical rod, the first horizontal beam, and the second horizontal beam all include a reinforcing part, the reinforcing part has a door-shaped structure, and both ends of the reinforcing part are provided with flanges. The outer skin is provided with edging at the edges corresponding to the first horizontal beam, the second horizontal beam, and the first vertical rod, and the edging wraps around the flange on the corresponding side.

[0018] This invention increases the contact area with the frame component through edge binding, allowing force to be transmitted and distributed more evenly, avoiding stress concentration. At the same time, the outer skin and the frame component form a stable overall structure that can effectively resist deformation.

[0019] Furthermore, the flanges on the other side of the first vertical rod, the first horizontal beam, and the second horizontal beam are bonded to the outer skin.

[0020] This invention can further enhance the connection strength between the outer skin and the frame assembly by gluing them together. At the same time, compared with welding, riveting and snap-fit ​​connection methods, it eliminates the need for corresponding connection materials or connectors, and further achieves weight reduction.

[0021] Furthermore, it also includes an interior trim panel, which is bolted to and / or snap-fitted to the frame assembly.

[0022] Furthermore, the interior trim panels are made of ABS material.

[0023] As can be seen from the above technical solutions, this utility model has the following advantages:

[0024] This utility model provides a rear door assembly for a van. By employing a Z-shaped cross-section frame component, the moment of inertia of the crossbeams (first and second), vertical rods (first and second) is optimized, improving bending resistance and significantly enhancing the strength of the frame component. Even with aluminum alloy materials, the overall strength of the rear door assembly is maintained, achieving a lightweight effect. The Z-shaped reinforcing beam increases the moment of inertia and transmits force in multiple directions, avoiding stress concentration and enhancing the support strength for vertical rods (first and second), effectively preventing frame component deformation. By bonding the reinforcing beam to the outer skin, the support strength of the outer skin is enhanced, and the bonding eliminates the need for connecting parts. Achieving lightweight design in one step; by adopting a buffer section with a hollow structure, the buffering capacity of the sealing strip is enhanced; by wrapping the edges and installing it on the same mounting part as the sealing strip, the connection strength between the vertical rod and the outer skin is ensured while reducing the space occupied by related connection structures; through the edge connection, the contact area with the frame assembly is increased, and the force can be transmitted and distributed more evenly, avoiding stress concentration. At the same time, the outer skin and the frame assembly form a stable integral structure, which can effectively resist deformation; by gluing the outer skin and the frame assembly, the connection strength between the outer skin and the frame assembly can be further enhanced. Compared with welding, riveting, and snap-fitting, the corresponding connection materials or connectors are eliminated, further achieving lightweight design. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0027] Figure 2 for Figure 1 Sectional view at point A in the middle.

[0028] Figure 3 for Figure 1 Sectional view at point B.

[0029] Figure 4 for Figure 1 Sectional view at point C.

[0030] Figure 5 for Figure 1 Sectional view at point D.

[0031] Figure 6 This is a schematic diagram of the reinforcing beam in a specific embodiment of this utility model.

[0032] In the diagram, 1. Vertical rod one; 2. Reinforcing beam; 3. Horizontal beam two; 4. Vertical rod two; 401. Main body of the rod; 402. Mounting part; 5. Horizontal beam one; 501. Flanged edge; 502. Reinforcing part; 6. Outer skin; 601. Edge wrapping; 7. Sealing strip; 701. Connecting part; 702. Buffer part. Detailed Implementation

[0033] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0034] like Figure 1 and Figure 2 As shown in the figure, this specific embodiment provides a rear door assembly for a van, including a left rear door assembly and a right rear door assembly. Both the left and right rear door assemblies include an outer skin 6 and a frame assembly from the outside in. The frame assembly includes a first crossbeam 5, a second crossbeam 3, a first vertical bar 1, and a second vertical bar 4 connected by welding. The first crossbeam 5, the second crossbeam 3, the first vertical bar 1, and the second vertical bar 4 form a rectangular frame structure. The first crossbeam 5 and the second crossbeam 3 are arranged opposite each other and have a Z-shaped cross-section. The first vertical bar 1 and the second vertical bar 4 are arranged opposite each other. The second vertical bar 4 of the left and right rear door assemblies are arranged adjacent to each other. The first vertical bar 1 has a Z-shaped cross-section. The first crossbeam 5, the second crossbeam 3, the first vertical bar 1, and the second vertical bar 4 are all made of aluminum alloy and are stamped. The outer skin 6 is still made of high-strength steel material in the prior art.

[0035] This specific embodiment, by employing a frame component with a Z-shaped cross section, optimizes the moment of inertia of the cross sections of beam 5, beam 3, vertical rod 1, and vertical rod 4, thereby improving bending resistance and significantly enhancing the strength of the frame component. The Z-shaped frame component increases the moment of inertia of the cross section without adding material. Compared to solid rectangular beams, the Z-shaped structure achieves the same or even higher strength with less material, reducing costs and structural weight. Even after using aluminum alloy materials, the strength of the entire rear door assembly can still be guaranteed, achieving a lightweight effect.

[0036] like Figure 1 and Figure 6As shown, to further enhance the strength of the frame assembly, in this specific embodiment, the frame assembly also includes a reinforcing beam 2. The reinforcing beam 2 is horizontally positioned between the first vertical rod 1 and the second vertical rod 4. Both ends of the reinforcing beam 2 are riveted to the first vertical rod 1 and the second vertical rod 4. Furthermore, the cross-section of the reinforcing beam 2 is Z-shaped. By setting the reinforcing beam 2 with a Z-shaped cross-section, the moment of inertia of the reinforcing rod can be increased, and the force can be transmitted in multiple directions, avoiding stress concentration and enhancing the support strength of the first vertical rod 1 and the second vertical rod 4, effectively preventing deformation of the frame assembly. To enhance the support strength of the outer skin 6, the reinforcing beam 2 is connected to the outer skin 6 by adhesive bonding. Compared with riveting, snap-fitting, and other methods, adhesive bonding can eliminate the need for corresponding connecting parts, further achieving weight reduction. In this specific embodiment, the reinforcing rod is stamped and made of aluminum alloy, and four reinforcing beams 2 are provided.

[0037] To facilitate the installation of the sealing strip 7 between the left north door assembly and the right rear door assembly and reduce space occupation, in this specific embodiment, the second vertical rod 4 includes a rod body 401. Two mounting portions 402 are horizontally arranged on opposite sides of the two rod bodies 401. The two mounting portions 402 are staggered, with the inner mounting portion 402 equipped with a sealing strip 7, and the outer surface of the outer mounting portion 402 being coplanar with the outer surface of the connected rod body 401. In this specific embodiment, the second vertical rod 4 uses a specially shaped aluminum alloy profile with a corresponding structure. To enhance the buffering effect of the sealing strip 7, the sealing strip 7 includes a connecting portion 701 and a buffer portion 702. The connecting portion 701 is sleeved on the corresponding mounting portion 402. The buffer portion 702 has a hollow structure and can abut against the inner surface of another mounting portion 402. When the door is closed, the buffer portion 702 receives pressure and can undergo elastic deformation, preventing a hard collision between the left rear door assembly and the right rear door assembly.

[0038] Furthermore, in this specific embodiment, the vertical rod 1, the horizontal beam 5, and the horizontal beam 3 all include a reinforcing part 502. The reinforcing part 502 has a U-shaped structure, and both ends of the reinforcing part 502 are provided with flanges 501. The outer skin 6 is provided with an edge banding 601 at the corresponding edges of the horizontal beam 5, the horizontal beam 3, and the vertical rod 1. The edge banding 601 wraps around the flange 501 on the corresponding side. In this specific embodiment, by using edge banding 601 for connection, the contact between the outer skin 6 and the frame assembly can be facilitated. With the increased area, external forces can be transmitted and distributed more evenly, avoiding stress concentration. At the same time, the outer skin 6 and the frame assembly form a stable overall structure, which can effectively resist deformation. Furthermore, the flange 501 on the other side of the vertical rod 1, the crossbeam 5, and the crossbeam 3 is glued to the outer skin 6. By gluing the outer skin 6 to the frame assembly, the connection strength between the outer skin 6 and the frame assembly can be further enhanced. Compared with welding, riveting, and snap-fit ​​connection methods, the corresponding connection materials or connectors are eliminated, further achieving lightweighting.

[0039] To reduce the space occupied by the connection structure between the outer skin 6 and the vertical rod 4, in this specific embodiment, the outer skin 6 and the corresponding edge of the rod body 401 are provided with a edging 601. The edging 601 wraps around the mounting part 402 which is provided with the connecting part 701, and the connecting part 701 wraps the corresponding edging 601 inside.

[0040] This specific embodiment also includes an interior panel, which is made of ABS material. The interior panel is bolted to the frame assembly and / or connected by a snap-fit ​​assembly. In this specific embodiment, the interior panel is connected to the reinforcing beam 2, vertical rod 1, horizontal beam 5 and horizontal beam 3 by a snap-fit ​​assembly. The snap-fit ​​assembly is a conventional licensed technology for connecting interior panels and belongs to the prior art. Its structure will not be described in detail in this document.

[0041] As can be seen from the above specific embodiments, this utility model has the following beneficial effects:

[0042] 1. By adopting a frame component with a Z-shaped cross section, the cross-sectional moment of inertia of crossbeam 1-5, crossbeam 2-3, vertical rod 1-1 and vertical rod 2-4 can be optimized, improving bending resistance and significantly enhancing the strength of the frame component. Even after using aluminum alloy materials, the strength of the entire rear door assembly can still be guaranteed, achieving a lightweight effect.

[0043] 2. By setting a reinforcing beam 2 with a Z-shaped cross section, the moment of inertia can be increased and the force can be transmitted in multiple directions, avoiding stress concentration, enhancing the support strength of vertical rod 1 and vertical rod 4, and effectively preventing deformation of the skeleton components;

[0044] 3. By bonding the reinforcing beam 2 to the outer skin 6, the supporting strength of the outer skin 6 is enhanced. On the other hand, the bonding eliminates the need for corresponding connectors, further achieving weight reduction.

[0045] 4. By adopting a buffer part 702 with a hollow structure, the buffering capacity of the sealing strip 7 is enhanced; by wrapping it with the edge 601 and installing it in the same mounting part 402 as the sealing strip 7, the connection strength between the vertical rod 2 4 and the outer skin 6 is ensured while reducing the space occupied by the related connection structure.

[0046] 5. The contact area with the frame assembly is increased by the edge 601 connection, which allows the force to be transmitted and distributed more evenly, avoiding stress concentration. At the same time, the outer skin 6 and the frame assembly form a stable overall structure, which can effectively resist deformation.

[0047] 6. By bonding the outer skin 6 to the frame assembly, the connection strength between the outer skin 6 and the frame assembly can be further enhanced. At the same time, compared with welding, riveting and snap-fitting, the corresponding connecting materials or connectors are eliminated, further achieving lightweighting.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rear door assembly for a van, comprising a left rear door assembly and a right rear door assembly, wherein both the left and right rear door assemblies include an outer skin (6) and a frame assembly from the outside in, characterized in that, The frame assembly is a rectangular structure. The frame assembly includes a first crossbeam (5), a second crossbeam (3), a first vertical rod (1), and a second vertical rod (4). The first crossbeam (5) and the second crossbeam (3) are arranged opposite each other and have a Z-shaped cross-section. The first vertical rod (1) and the second vertical rod (4) are arranged opposite each other. The second vertical rod (4) of the left back door assembly and the right back door assembly are adjacent. The cross-section of the first vertical rod (1) is a Z-shaped cross-section. The first crossbeam (5), the second crossbeam (3), the first vertical rod (1), and the second vertical rod (4) are all made of aluminum alloy.

2. The rear door assembly of the van as described in claim 1, characterized in that, The skeleton assembly also includes a reinforcing beam (2), which is horizontally positioned between the first vertical rod (1) and the second vertical rod (4), and the cross-section of the reinforcing beam (2) is Z-shaped.

3. The rear door assembly of the van as described in claim 2, characterized in that, The reinforcing beam (2) is bonded to the outer skin (6).

4. The rear door assembly of the van as described in claim 2, characterized in that, The second vertical rod (4) includes a rod body (401). Each of the two rod bodies (401) has a horizontally arranged mounting part (402) on one side opposite to the other. The two mounting parts (402) are staggered inside and outside. The mounting part (402) located on the inner side is provided with a sealing strip (7). The outer surface of the mounting part (402) located on the outer side is coplanar with the outer surface of the rod body (401) connected to it.

5. The rear door assembly of the van as described in claim 4, characterized in that, The sealing strip (7) includes a connecting part (701) and a buffer part (702). The connecting part (701) is sleeved on the corresponding mounting part (402). The buffer part (702) is a hollow structure and can abut against the inner surface of another mounting part (402).

6. The rear door assembly of the van as described in claim 5, characterized in that, The outer skin (6) is provided with an edge band (601) corresponding to the rod body (401). The edge band (601) wraps around the mounting part (402) which is provided with the connecting part (701), and the connecting part (701) wraps the corresponding edge band (601) inside.

7. The rear door assembly of a van as described in any one of claims 2-4, characterized in that, The first vertical rod (1), the first horizontal beam (5), and the second horizontal beam (3) all include a reinforcing part (502). The reinforcing part (502) has a door-shaped structure. Both ends of the reinforcing part (502) are provided with flanges (501). The outer skin (6) is provided with a binding edge (601) at the corresponding edge of the first horizontal beam (5), the second horizontal beam (3), and the first vertical rod (1). The binding edge (601) wraps around the flange (501) on the corresponding side.

8. The rear door assembly of the van as described in claim 7, characterized in that, The flange (501) on the other side of the vertical rod (1), the crossbeam (5), and the crossbeam (3) is glued to the outer skin (6).

9. The rear door assembly of the van as described in claim 2, characterized in that, It also includes interior trim panels, which are bolted to and / or snap-fitted to the frame assembly.

10. The rear door assembly of the van as described in claim 9, characterized in that, The interior trim panels are made of ABS material.

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