Automobile trunk lid

Abstract

The application relates to a car trunk cover, which comprises an inner plate of SMC material, an upper outer plate and a lower outer plate of polypropylene material, the upper outer plate is bonded to the upper part of the inner plate, the lower outer plate is bonded to the lower part of the inner plate, the lower part of the upper outer plate covers and is bonded to the upper part of the lower outer plate, the upper part of the lower outer plate is provided with a Great Wall-shaped support structure, the support structure comprises support parts arranged at intervals, and the support parts support the upper outer plate. The car trunk cover of the application adopts the inner plate of SMC material and the upper outer plate and the lower outer plate of PP material which are bonded together, so that the car trunk cover can be suitable for various shapes and the weight can be reduced, the hinge reinforcing plate and the lock catch reinforcing plate are arranged on the inner plate, the strength of the hinge and the lock catch can be enhanced, and thus the overall performance is consistent with that of the car trunk cover formed by sheet metal.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts, and more particularly to an automobile trunk lid. BACKGROUND

[0002] In the prior art, automobile trunk lids are mostly supported by sheet metal forming processes, that is, the inner and outer plates of the automobile trunk lid are both metal plates formed by sheet metal processes and are connected by welding.

[0003] Such traditional sheet metal automobile trunk lids are heavy and cannot meet the lightweight design requirements of automobiles. In addition, due to the difficulty of deep cavity forming of sheet metal outer plates, traditional sheet metal automobile trunk lids often need to be disassembled to be completed, which not only increases the number of parts, but also complicates the production process, resulting in high production cost. SUMMARY

[0004] The purpose of the present application is to provide an automobile trunk lid which can not only be easily formed into various shapes, but also reduce weight.

[0005] The present application provides an automobile trunk lid, comprising an inner plate of SMC material and upper and lower outer plates of polypropylene material, the upper outer plate being bonded to the upper portion of the inner plate, the lower outer plate being bonded to the lower portion of the inner plate, the lower portion of the upper outer plate covering and being bonded to the upper portion of the lower outer plate; the upper portion of the lower outer plate is provided with a Great Wall-shaped support structure comprising support portions arranged at intervals for supporting the upper outer plate.

[0006] Further, ventilation holes are provided between the support portions.

[0007] Further, ventilation openings are provided on the inner plate and communicate with the ventilation holes.

[0008] Further, the side edges of the support portions are in close contact with the inner plate.

[0009] Further, hinge reinforcing plates are provided on both sides of the inner plate and are connected to the rear portion of the automobile through hinges.

[0010] Further, a lock catch reinforcing plate is provided at the bottom of the inner plate and is provided with a lock catch.

[0011] Further, the lock catch reinforcing plate comprises an outwardly extending antenna.

[0012] Further, the lock catch reinforcing plate is in close contact with the inner plate.

[0013] Further, the inner plate is provided with two Y-shaped structures, one of the two Y-shaped structures is connected with each other, and the other is connected with the hinge reinforcing plates on the two sides of the inner plate respectively, and the bottom of the two Y-shaped structures is connected with the lock reinforcing plate.

[0014] Further, the lower outer plate is provided with a camera support, and the camera support is provided with a support structure, and the support structure is bonded with the inner plate and the lower outer plate respectively.

[0015] The automobile trunk cover of the present application is bonded by the inner plate made of SMC material and the upper and lower outer plates made of PP material, which can be applied to various shapes and reduce the weight; the hinge reinforcing plate and the lock reinforcing plate are arranged on the inner plate, which can enhance the strength of the hinge and the lock, so that the overall performance is consistent with the automobile trunk cover made of sheet metal. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an exploded view of the automobile trunk cover according to the embodiment of the present application;

[0017] Figure 2 It is an enlarged view of I of Figure 1

[0018] Figure 3 It is an A-A sectional view of Figure 2

[0019] Figure 4 It is a B-B sectional view of Figure 2

[0020] Figure 5 It is a schematic view of the cooperation between the inner plate and the side of the support part according to the embodiment of the present application;

[0021] Figure 6 It is a front view of the lock area of the inner plate of the automobile trunk cover according to the embodiment of the present application;

[0022] Figure 7 It is a C-C sectional view of Figure 6

[0023] Figure 8 It is a structural schematic view of the lock reinforcing plate of the automobile trunk cover according to the embodiment of the present application;

[0024] Figure 9 It is a structural schematic view of the automobile trunk cover showing the support structure of the camera support;

[0025] Figure 10 It is a schematic view of the two Y-shaped structures according to the embodiment of the present application. DETAILED DESCRIPTION

[0026] ​​​​The preferred embodiments of the present application will be described in detail below with reference to the drawings.

[0027] As shown in Figure 1 , the present application provides a car trunk lid, which comprises an inner plate 1, an upper outer plate 2 and a lower outer plate 3. The inner plate 1 is generally in the shape of "W", and its upper part is bonded to the upper outer plate 2 along the boundary. The upper outer plate 2 corresponds to the shape of the upper part of the inner plate 1, and has a downward and inward bending part 20 at one end. The lower outer plate 3 corresponds to the shape of the lower part of the inner plate 1, and also has a bending part 30. The outer side of the bending part 30 is bonded to the inner side of the bending part 20 of the upper outer plate 2, and the inner side of the lower outer plate 3 is bonded to the lower part of the inner plate 1 along the circumference, thereby forming the car trunk lid. The inner plate 1 is made of SMC material with good mechanical properties, and the upper outer plate 2 and the lower outer plate 3 are made of PP material (polypropylene). The SMC material (including low-density SMC) and the PP material have low density relative to sheet metal, so they are light in weight. Moreover, the SMC material and the PP material can form various complex shapes through injection molding, and the production process is simple and the cost is low. While meeting the requirements of lightweight design of the car, the car trunk lid also takes into account the demand for various shapes, such as deep cavity forming and sharp edge line making.

[0028] The present application also provides a hinge reinforcing plate 4 on each side of the inner plate 1, which is connected to the rear part of the car through a hinge, so that the car trunk lid can rotate relative to the car trunk door, thereby realizing the opening or closing of the car trunk lid. The hinge reinforcing plate 4 is made of metal material, such as H300LAD+Z100 galvanized automobile steel, which can be made through sheet metal process to increase the strength of the car trunk lid at the hinge connection. The hinge reinforcing plate 4 and the inner plate 1 can be connected through bolt, riveting or bonding.

[0029] As shown in Figure 2 , the upper part of the lower outer plate 3 is provided with a Great Wall-shaped support structure 31, which comprises support parts 311 arranged at intervals, and ventilation holes 312 arranged between the two support parts 311.

[0030] As shown in Figure 3 , the support part 311 is used to support the upper outer plate 2 to meet the static stiffness requirement of the upper outer plate 2. As shown in Figure 4 , during assembly, the inner plate 1 is placed on a tire mold, and the tire mold is provided with a heating device (not shown in the figure). The heating device can blow hot air to directly heat the glue at the bonding positions between the inner plate 1 and the upper outer plate 2 and between the inner plate 1 and the lower outer plate 3, thereby shortening the curing time. Because the space at the position of the bonding position P of the upper outer plate 2 and the lower outer plate 3 is too small, the heating device cannot be arranged to heat it, so its curing time is long and the production rhythm is slow. Therefore, in the present embodiment, the inner plate 1 is also provided with a ventilation opening 11 which communicates with the ventilation hole 312 on the lower outer plate 3, and the hot air Figure 4The middle dotted line frame is the hot air flow channel. The hot air flows through the vent 11 and the vent hole 312 to the bonding position P between the upper outer plate 2 and the lower outer plate 3, so that the glue at the position P is quickly cured, and the production rhythm is accelerated.

[0031] In the assembly process, the lower outer plate 3 is first bonded to the inner plate 1. Since the upper outer plate 2 has not been installed at this time, the bonding position between the lower outer plate 3 and the inner plate 1 can be directly heated. After the lower outer plate 3 is installed, the upper outer plate 2 is bonded to the overall structure formed by the inner plate 1 and the lower outer plate 3. Since the bonding position between the upper outer plate 2 and the inner plate 1 can be directly heated and cured, and the support part 311 is present, it can support the upper outer plate 2, so that the automobile trunk lid does not deform and dislocate during transportation. Therefore, even if the glue at the bonding position P between the upper outer plate 2 and the lower outer plate 3 cures slowly, it can slowly cure under the production line, which does not affect the production rhythm, thereby accelerating the production efficiency.

[0032] It should be noted that if the production site and equipment permit, the upper and lower outer plates can be bonded first, and then bonded with the inner plate to complete the assembly.

[0033] As shown in Figure 5 , the side edge 3111 of the support part 311 of the lower outer plate 3 matches the structure of the inner plate 1 at this position, that is, the side edge 3111 is in close contact with the inner plate 1. When subjected to an external force F1 applied from the outside of the upper outer plate 2 during the assembly process, the inner plate 1 will generate a counteracting compression force F2. The compression force F2 can be transmitted to the support part 311 through the inner plate 1, and then to the upper outer plate 2 and the lower outer plate 3. In this way, the accuracy of this position can be guaranteed, and deformation does not occur when subjected to an external force.

[0034] As shown in Figure 6 and 7 , the bottom middle region of the inner plate 1 is provided with a lock reinforcing plate 5, which is provided with a lock 51 for locking the automobile trunk lid on the automobile tail door. The lock reinforcing plate 5 is made of metal material, for example, H300LAD+Z100 galvanized automobile steel, which can be made by sheet metal process to increase the strength of the automobile trunk lid in the lock area. The lock reinforcing plate 5 is connected to the inner plate 1 by bolting, riveting or bonding. Preferably, the lock reinforcing plate 5 and the inner plate 1 are as close to zero as possible.

[0035] As shown in Figure 8 , the lock reinforcing plate 5 has two outwardly extending antennae 52, which are connected to the inner plate 1 by bolting, riveting or bonding. The antennae 52 increase the strength of the inner plate 1 while locking, so that the inner plate in the lock area meets the strength requirement.

[0036] The number of antennae 52 can be increased or decreased as needed, and the extension direction can also be selected according to the part that needs to be strengthened. The present application does not limit this.

[0037] As shown in Figure 9 The camera support 61 is welded or bonded to the lower outer plate 3, and a support structure 62 is arranged on the camera support 61 and integrally formed with the camera support 61, and is bonded to the inner plate 1 and the lower outer plate 3, respectively, to constrain the camera support 61 in the X direction, so that the size l between the inner plate 1 and the farthest end of the camera support 61 is fixed, so that even if the camera support 61 has manufacturing tolerances, the position of the camera support 61 can be controlled by adjusting the wall thickness of the inner plate 1 or the thickness of the glue between the inner plate 1 and the support structure 62, and the modal of the entire product is also improved. For example, if the camera support 61 needs to move 0.5mm to the right due to manufacturing deviation, as long as the wall thickness of the inner plate 1 is thickened by 0.5mm, the support structure 62 and the camera support 61 will automatically move 0.5mm to the right, thereby achieving X direction adjustment.

[0038] As shown in Figure 10 Two Y-shaped structures 12 are arranged on the inner plate 1, one angle 121 of each Y-shaped structure 12 is connected to each other, the other angle 122 of each Y-shaped structure 12 is connected to the hinge reinforcing plate 4 on the side of the inner plate 1, and the bottom 123 of each Y-shaped structure 12 is connected to the lock reinforcing plate 5, so that the entire inner plate 1 has strong torsion resistance and bending resistance, thereby improving the overall structural strength, stability and safety of the luggage compartment cover. Compared with the double X-shaped structure used in the prior art, the double Y-shaped structure is simpler and lighter, and the connection between the bottom of the double Y-shaped structure 12 and the lock reinforcing plate 5 occupies less space, leaving more space for the lock reinforcing plate 5, so that the lock can be arranged more easily.

[0039] When the automobile luggage compartment cover is actually installed, the size mismatch problem may be caused due to the action of the supporting rod and the sealing strip, and therefore, the present application solves the problem by the reverse deformation scheme.

[0040] The automobile luggage compartment cover provided by the embodiment of the present application is formed by bonding the inner plate 1 made of SMC material and the upper outer plate 2 and the lower outer plate 3 made of PP material, which can be suitable for various shapes and can reduce the weight; the hinge reinforcing plate 4 and the lock reinforcing plate 5 are arranged on the inner plate 1, which can enhance the strength of the hinge and the lock, thereby making the overall performance consistent with that of the automobile luggage compartment cover formed by sheet metal.

[0041] The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. The above embodiment of the present application can be variously changed. Any simple, equivalent changes and modifications made according to the content of the claims and the description of the present application fall within the scope of protection of the present application. The present application does not describe all the conventional technical contents.

Claims

1. An automobile trunk lid characterized by, The inner plate comprises SMC material, and the upper and lower outer plates comprise polypropylene material, the upper outer plate is bonded to the upper portion of the inner plate, the lower outer plate is bonded to the lower portion of the inner plate, the lower portion of the upper outer plate covers and is bonded to the upper portion of the lower outer plate, the upper portion of the lower outer plate is provided with a Great Wall-shaped support structure, the support structure comprises support portions arranged at intervals, and the support portions support the upper outer plate; Ventilation holes are arranged between the support portions; Ventilation openings are arranged on the inner plate and communicate with the ventilation holes; Hinge reinforcing plates are arranged on both sides of the inner plate, the hinge reinforcing plates are connected to the rear portion of the automobile through hinges, a lock catch reinforcing plate is arranged at the bottom of the inner plate, and a lock catch is arranged on the lock catch reinforcing plate; Two Y-shaped structures are arranged on the inner plate, one of the corners of the two Y-shaped structures is connected to each other, the other corner of the two Y-shaped structures is connected to the hinge reinforcing plates arranged on both sides of the inner plate respectively, and the bottom of the two Y-shaped structures is connected to the lock catch reinforcing plate.

2. The automotive tonneau cover of claim 1, wherein, The side edges of the support portions are in close contact with the inner plate.

3. The automotive tonneau cover of claim 1, wherein, The lock catch reinforcing plate comprises an antenna extending outward.

4. The automotive tonneau cover of claim 1, wherein, The lock catch reinforcing plate is not attached to the inner plate.

5. The automotive tonneau cover of claim 1, wherein, A camera support is arranged on the lower outer plate, a support structure is arranged on the camera support, and the support structure is bonded to the inner plate and the lower outer plate respectively.

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