Tail door inner plate, tail door and automobile

Abstract

The utility model relates to a tail door inner plate, a tail door and an automobile. The tail door inner plate and the tail door outer plate are assembled to form a tail door structure, and the tail door inner plate comprises a tail door inner plate body, an annular groove formed in the inner side of the outer edge of the tail door inner plate body in the circumferential direction, a pipeline-shaped tail door pipeline reinforcing structure and reinforcing ribs vertically arranged on the tail door pipeline reinforcing structure. The tail door pipeline reinforcing structure extends along the bottom face of the annular groove, the two ends of the tail door pipeline reinforcing structure are converged at the lower side edge of the tail door inner plate body and extend out of the annular groove together, and the reinforcing rib is connected between the two side walls of the annular groove in a supporting mode. Compared with the prior art, the tail door pipeline reinforcing structure is introduced into the annular groove penetrating through the whole circle of the tail door, the reinforcing ribs are arranged on the tail door pipeline reinforcing structure, the annular groove and the tail door pipeline reinforcing structure are connected, and the problem that the rigidity and the strength of the tail door with the detachable outer plate are insufficient is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles and relates to a tailgate inner panel, a tailgate and an automobile, and in particular to a tailgate inner panel with a reinforced structure, a detachable outer panel tailgate and an automobile. Background Art

[0002] In the existing field of automobile tailgate technology, there is a tailgate with a detachable outer panel, which connects the inner and outer panels by means of easy-to-detach methods such as snap-fitting and threading. This connection method replaces the traditional full-circle welding or bonding, and provides convenience for the maintainability and personalized modification of the tailgate outer panel. However, due to the lack of a full-circle connection between the inner and outer panels, as well as the reinforcement ribs, bulges, grooves and other structures of the tailgate inner panel itself, the tailgate has insufficient rigidity. Utility Model Content

[0003] The purpose of the present utility model is to solve the problem of insufficient rigidity of the existing tailgate with detachable outer panel, and to provide a tailgate inner panel, a tailgate and a car with a reinforced structure. The reinforcement structure of the tailgate inner panel is arranged around the tailgate, and a tailgate duct reinforcement structure is introduced into an annular groove running through the entire circle of the tailgate. Reinforcing ribs are provided on the tailgate duct reinforcement structure to connect the annular groove and the tailgate duct reinforcement structure, so as to supplement the rigidity loss caused by replacing the traditional inner and outer panel welding or bonding by easy-to-detach methods such as clipping and threaded connection.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] The first aspect of the present invention provides a tailgate inner panel, which is assembled with the tailgate outer panel to form a tailgate structure, specifically comprising

[0006] Tailgate inner panel body;

[0007] An annular groove is provided on the inner side of the outer edge of the tailgate inner panel body along the circumferential direction;

[0008] The tailgate duct reinforcement structure is in the shape of a pipe and extends along the bottom surface of the annular groove; at the lower side of the tailgate inner panel body, the two ends of the tailgate duct reinforcement structure converge and extend together outward of the annular groove; and

[0009] The reinforcement ribs are erected on the tailgate duct reinforcement structure and supported between the two side walls of the annular groove. The back surface of the annular groove's bottom surface serves as a sealing surface, contacting the vehicle body's weatherstrip. The tubular tailgate duct reinforcement structure has a closed cavity cross-section, resulting in a greater moment of inertia than an open groove structure. A greater moment of inertia improves the overall structure's bending and torsional resistance, and thus, its rigidity. Therefore, the tailgate duct reinforcement structure can better resist twisting, bending, and lateral deformation during actual use, enhancing the rigidity of the tailgate inner panel itself and resolving the rigidity issues often associated with removable outer panel tailgates. The reinforcement ribs connect the annular groove and the tailgate duct reinforcement structure, enhancing the connection strength between the annular groove and the duct reinforcement structure.

[0010] Furthermore, the tailgate outer panel and the tailgate inner panel are connected by snapping.

[0011] Furthermore, the tailgate outer panel and the tailgate inner panel are connected via threads.

[0012] Furthermore, the tailgate inner panel body is a fiber reinforced plastic tailgate inner panel body.

[0013] Furthermore, the tailgate duct reinforcement structure is a fiber-reinforced plastic tailgate duct reinforcement structure or a metal tailgate duct reinforcement structure.

[0014] Furthermore, the tailgate inner panel body and the tailgate duct reinforcement structure are integrally formed by gas-assisted injection molding or insert injection molding.

[0015] Furthermore, the reinforcing ribs are fiber reinforced plastic reinforcing ribs.

[0016] Furthermore, the thickness of the reinforcing rib is 1 to 3 mm. Preferably, the thickness of the reinforcing rib is 2 mm. The provision of the reinforcing rib can enhance the rigidity of the tailgate without increasing the thickness of the tailgate inner panel, thereby avoiding the problem of insufficient rigidity of detachable outer panel tailgates.

[0017] A second aspect of the present invention provides a tailgate, on which the tailgate inner panel as described in the first aspect is assembled.

[0018] A third aspect of the present invention provides a car, which is equipped with the tailgate as described in the second aspect.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The utility model provides a tailgate inner panel, which is provided with an annular groove along the inner side of the outer edge of the circumference of the tailgate inner panel body, and a pipe-shaped tailgate duct reinforcement structure is provided in the groove. The cross section of the pipe is a closed cavity structure. Compared with the groove structure with an open cross section, it has a larger cross-sectional moment of inertia. The larger the cross-sectional moment of inertia, the better the bending and torsional resistance of the entire structure, and thus the better the rigidity. The rigidity of the tailgate inner panel itself is improved, and the problem of insufficient rigidity of the detachable outer panel tailgate can be solved.

[0021] 2) The utility model provides a tailgate inner panel, in which a tailgate reinforcement rib structure is provided in the annular groove. The reinforcement rib structure connects the annular groove and the tailgate duct reinforcement structure to further improve its rigidity.

[0022] 3) The structural reinforcement system proposed in the present invention has a simple structure and high flexibility, and can be applied not only to the field of automobile tailgates, but also to other usage scenarios requiring structural reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of the tailgate inner panel in this embodiment;

[0024] Figure 2 for Figure 1 Middle AA section;

[0025] Figure 3 for Figure 1 Middle BB cross section;

[0026] Figure 4 for Figure 1 Middle CC section;

[0027] Description of the marks in the figure:

[0028] 1- Tailgate inner panel body, 2- Tailgate duct reinforcement structure, 3- Reinforcement ribs, 4- Annular groove. DETAILED DESCRIPTION

[0029] The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0031] In the following embodiments, unless otherwise specified, raw materials or processing techniques are conventionally available in the market or conventional processing techniques are used. Unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0032] In the following embodiments, the fiber-reinforced plastic tailgate inner panel body is a long glass fiber reinforced polypropylene (PP-LGF) type plastic tailgate inner panel body; the fiber-reinforced plastic tailgate duct reinforcement structure is a PP-LGF type plastic tailgate duct reinforcement structure; the metal tailgate duct reinforcement structure is a steel tailgate duct reinforcement structure; and the fiber-reinforced plastic reinforcement rib is a PP-LGF type plastic reinforcement rib.

[0033] Example:

[0034] A tailgate inner panel is assembled with a tailgate outer panel to form a tailgate structure, and the tailgate outer panel and the tailgate inner panel are connected by threads. Figure 1 The figure shows the overall structure of the tailgate inner panel in this embodiment. Figure 1 、 Figure 2 and Figure 3The AA, BB, and CC cross-sections of the tailgate inner panel in the embodiment, respectively, show that the tailgate inner panel specifically comprises a tailgate inner panel body 1, an annular groove 4 circumferentially disposed inwardly of the outer edge of the tailgate inner panel body 1, a pipe-shaped tailgate duct reinforcement structure 2, and reinforcement ribs 3. The tailgate inner panel body 1 and the tailgate duct reinforcement structure 2 are produced by gas-assisted injection molding. The tailgate inner panel body 1 is a fiber-reinforced plastic tailgate inner panel, and the tailgate duct reinforcement structure 2 is a fiber-reinforced plastic tailgate duct reinforcement structure or a metal tailgate duct reinforcement structure, which extends along the bottom surface of the annular groove 4. At the lower side of the tailgate inner panel body 1, the two ends of the tailgate duct reinforcement structure 2 converge and extend together outward of the annular groove 4. Among them, the two ends of the tailgate duct reinforcement structure 2 extending outward are respectively the air inlet end and the air outlet end of the tailgate duct reinforcement structure 2 when the tailgate duct reinforcement structure 2 is gas-assisted injection molded. The cross-section of the pipe-shaped tailgate duct reinforcement structure 2 is a closed cavity structure. Compared with the groove structure with an open cross-section, it has a larger cross-sectional moment of inertia. The larger the cross-sectional moment of inertia, the better the bending and torsional resistance of the entire structure, and thus the stronger it is. The degree will be better, so the tailgate duct reinforcement structure 2 can better resist the torsion, bending and lateral deformation of the tailgate in actual use, improve the rigidity of the tailgate inner panel itself, and thus solve the problem of insufficient rigidity of the detachable outer panel tailgate; the reinforcement rib 3 is a fiber-reinforced plastic reinforcement rib with a thickness of 2mm and is vertically arranged on the tailgate duct reinforcement structure 2, and is supported and connected between the two side walls of the annular groove 4. The reinforcement rib 3 connects the annular groove 4 and the tailgate duct reinforcement structure 2 into one, and is used to improve the connection strength between the annular groove 4 and the tailgate duct reinforcement structure 2. The reinforcement rib 3 can enhance its rigidity without increasing the wall thickness of the tailgate inner panel, thereby avoiding the problem of insufficient rigidity of the detachable outer panel tailgate.

[0035] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A tailgate inner panel, assembled with a tailgate outer panel to form a tailgate structure, characterized in that: include Tailgate inner panel body (1); An annular groove (4) is circumferentially arranged on the inner side of the outer edge of the tailgate inner panel body (1); The tailgate duct reinforcement structure (2) is in the shape of a duct and extends along the bottom surface of the annular groove (4); at the lower side of the tailgate inner plate body (1), the two ends of the tailgate duct reinforcement structure (2) converge and extend together toward the outside of the annular groove (4); and, The reinforcing rib (3) is erected on the tailgate duct reinforcing structure (2) and is supported and connected between the two side walls of the annular groove (4).

2. The tailgate inner panel according to claim 1, characterized in that: The tailgate outer panel and the tailgate inner panel are connected by snapping.

3. The tailgate inner panel according to claim 1, characterized in that: The tailgate outer plate is connected to the tailgate inner plate via threads.

4. The tailgate inner panel according to claim 1, characterized in that: The tailgate inner panel body (1) is a fiber-reinforced plastic tailgate inner panel body.

5. The tailgate inner panel according to claim 1, characterized in that: The tailgate duct reinforcement structure (2) is a fiber-reinforced plastic tailgate duct reinforcement structure or a metal tailgate duct reinforcement structure.

6. The tailgate inner panel according to claim 1, characterized in that: The tailgate inner panel body (1) and the tailgate duct reinforcement structure (2) are integrally formed by gas-assisted injection molding or insert injection molding.

7. The tailgate inner panel according to claim 1, characterized in that: The reinforcing ribs (3) are fiber-reinforced plastic reinforcing ribs.

8. The tailgate inner panel according to claim 1, characterized in that: The thickness of the reinforcing rib (3) is 1 to 3 mm.

9. A tailgate, characterized in that: The tailgate is equipped with a tailgate inner panel as described in any one of claims 1 to 8.

10. An automobile, characterized in that: The automobile is equipped with the tailgate as claimed in claim 9.

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