A water-assisted formed plastic tailgate inner panel

Abstract

The present invention belongs to the technical field of plastic tailgates, and provides a water-assisted formed plastic tailgate inner panel, which is installed between the tailgate spoiler area, the tailgate window frame area and the tailgate outer panel area, and the tailgate inner panel has a window frame matching portion, and the two sides of the window frame matching portion are formed with a closed cavity channel structure by water-assisted forming. The advantage of the present invention is that a closed cavity is formed in the window frame area on both sides of the tailgate inner panel by the water-assisted forming method, which greatly enhances the rigidity and strength of this area, and the inner panel is integrally formed, and there is no need to add a metal reinforcing plate to connect with the inner panel body, which reduces the number of parts and simplifies the process. At the same time, the elimination of the metal reinforcing plate will bring about a better lightweight effect.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic tailgates and relates to a water-assisted formed plastic tailgate inner plate. Background Art

[0002] With the demand for lightweight and diversified car styling, all-thermoplastic tailgates are increasingly used. The inner panel material is generally PP+LGF, which has poorer mechanical properties than traditional steel. The window frame area on both sides of the tailgate inner panel is an open structure, which is prone to breakage under inertial load and high-speed collision conditions. Figure 5 As shown, the window frame areas on both sides of the existing plastic tailgate inner panel generally have metal reinforcement plates 1002 added to connect with the inner panel by insert injection molding or screwing and bonding to enhance the rigidity and strength of this area. The metal reinforcement plates 1002 and the inner panel are insert injection molded. Since the lower surface of the inner panel structure on both sides of the window frame is the rear windshield mating surface 700, due to the molding demolding requirements, a "U"-shaped opening structure is formed together with the vertical surface, and an opening is formed at the rear windshield mating surface 700. This not only increases the number of parts, stamping processes and screwing (bonding or insert injection molding) processes, but also the metal reinforcement plates greatly increase the weight of the product. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a water-assisted molded plastic tailgate inner panel in view of the current status of the prior art, which enhances the rigidity and strength of the window frame areas on both sides of the tailgate inner panel, and does not require the addition of a metal reinforcement plate to connect the inner panel body, thereby bringing a better lightweight effect.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a water-assisted molded plastic tailgate inner panel, which is installed between the tailgate spoiler area, the tailgate window frame area and the tailgate outer panel area, and is characterized in that the tailgate inner panel has a window frame matching part, and the two sides of the window frame matching part are formed with a closed cavity channel structure by water-assisted molding.

[0005] In the above-mentioned water-assisted molded plastic tailgate inner panel, gates are arranged at the upper ends of both sides of the window frame matching part of the tailgate inner panel, and water injection ports are arranged at the lower ends. The water-assisted molding forms a closed cavity from the water injection ports to the gates.

[0006] In the above-mentioned water-assisted molded plastic tailgate inner panel, the upper surface of the closed cavity on both sides of the window frame mating part is the rear windshield mating surface, and the lower surface is the tailgate sealing strip mating surface. There is a first vertical surface and a second vertical surface between the rear windshield mating surface and the tailgate sealing strip mating surface. The rear windshield mating surface, the inner panel tailgate sealing strip mating surface, the first vertical surface and the second vertical surface form a closed cavity in the shape of a U-shaped body.

[0007] In the above-mentioned water-assisted molded plastic tailgate inner panel, the water injection port is located at the lower end of the second vertical surface.

[0008] Compared with the prior art, the advantage of the present invention is that a closed cavity is formed in the window frame area on both sides of the tailgate inner panel by a water-assisted molding method, which greatly enhances the rigidity and strength of this area. The inner panel is integrally formed without the need to add a metal reinforcement plate to connect with the inner panel body, thereby reducing the number of parts and simplifying the process. At the same time, the elimination of the metal reinforcement plate will bring about a better lightweight effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Front view of the tailgate inner panel;

[0010] Figure 2 An enlarged view of a part C of the window frame matching part of the tailgate inner panel;

[0011] Figure 3 yes Figure 2 DD sectional view of the window frame matching part;

[0012] Figure 4 yes Figure 2 EE cross-sectional view of the window frame matching part;

[0013] Figure 5 It is a partial cross-sectional view of the window frame matching part of the prior art. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] In the description of the present invention, it is necessary to understand that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0016] In the figure, the tailgate spoiler area 100; the tailgate outer panel area 200; the tailgate window frame area 300; the tailgate inner panel 400; the window frame mating part 401; the gate 500; the water injection port 600; the rear windshield mating surface 700; the tailgate sealing strip mating surface 800; the first vertical surface 900; the second vertical surface 1000; the closed cavity 1001; and the metal reinforcement plate 1002.

[0017] like Figure 1 As shown, the water-assisted molded plastic tailgate inner panel is integrally molded, wherein the top of the tailgate inner panel 400 is the tailgate spoiler area 100, the bottom end is the tailgate outer panel area 200, and the middle is the tailgate window frame area 300, that is, the rear windshield area, and the tailgate inner panel 400 has a window frame matching portion 401, and the upper and lower ends of the window frame matching portion 401 are respectively matched with the rear windshield and the tailgate sealing strip.

[0018] like Figure 2 As shown, in order to form a closed cavity channel structure on both sides of the window frame matching part 401 through water-assisted molding, specifically, gates 500 are arranged at the upper ends of both sides of the window frame matching part 401 of the tailgate inner panel 400, and water injection ports 600 are arranged at the lower ends. Water-assisted molding forms a closed cavity 1001 from the water injection ports 600 to the gate 500, wherein the gate 500 is mainly used to integrally inject the entire tailgate inner panel 400, and the water injection port 600 is mainly used to form a closed cavity 1001 at the window frame matching part 401 of the tailgate inner panel 400 using water-assisted molding technology, which can enhance the mechanical strength at the window frame matching part 401, thereby greatly enhancing the rigidity and strength of the tailgate window frame area 300, and the inner panel is integrally formed, and there is no need to add a metal reinforcement plate 1002 to connect with the inner panel body, thereby reducing the number of parts and simplifying the process. At the same time, eliminating the metal reinforcement plate 1002 will bring better lightweight effect.

[0019] like Figure 3 and Figure 4 As shown, as a further optimization, after water-assisted molding, the upper surface of the closed cavity 1001 on both sides of the window frame mating part 401 is the rear windshield mating surface 700, and the lower surface is the tailgate sealing strip mating surface 800, and there is a first vertical surface 900 and a second vertical surface 1000 between the rear windshield mating surface and the tailgate sealing strip mating surface 800, and the water injection port 600 is located at the lower end of the second vertical surface 1000, and the rear windshield mating surface, the tailgate sealing strip mating surface 800, the first vertical surface 900 and the second vertical surface 1000 form a U-shaped closed cavity 1001, and the U-shaped closed cavity 1001 makes better use of the increase in strength and greatly improves the mechanical properties of this area.

[0020] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A water-assisted formed plastic tailgate inner panel, installed between the tailgate spoiler area, the tailgate window frame area and the tailgate outer panel area, It is characterized in that The tailgate inner panel has a window frame mating part, and both sides of the window frame mating part are formed with a closed cavity channel structure by water-assisted molding; the upper ends of both sides of the window frame mating part of the tailgate inner panel are arranged with gates, and the lower ends are arranged with water injection ports, and the water-assisted molding forms a closed cavity from the water injection port to the gate; the upper surface of the closed cavity on both sides of the window frame mating part is the rear windshield mating surface, and the lower surface is the tailgate sealing strip mating surface, and a first vertical surface and a second vertical surface are provided between the rear windshield mating surface and the tailgate sealing strip mating surface, and the rear windshield mating surface, the inner panel tailgate sealing strip mating surface, the first vertical surface and the second vertical surface form a closed cavity in the shape of a U-shaped cavity, and the water injection port is located at the lower end of the second vertical surface.

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