Bridging structure for gluing surface of non-metal tail door inner plate
By installing bridging stiffeners in the waist of the inner panel of the plastic tailgate and strengthening the connection, the problem of insufficient rigidity of the inner panel of the plastic tailgate is solved, the lateral, torsional and local rigidity are improved, and the continuity of the force transmission path is ensured.
Patent Information
- Application Number
- CN202422886920.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The plastic tailgate inner panel exhibits poor lateral stiffness, torsional stiffness, and local stiffness of the struts, making it difficult to meet the requirements for lightweighting.
A horizontal bridging stiffener is installed in the waist area of the inner panel of the plastic tailgate. The bridging stiffener has an additional bonding surface with the outer panel of the tailgate, and reinforcing ribs are installed inside to enhance the connection strength, forming a rectangular box-shaped structure to improve the support strength.
The lateral and torsional stiffness of the inner panel of the plastic tailgate and the local stiffness of the gas strut area have been improved, ensuring the continuity of the force transmission path and enhancing the local stiffness of the tailgate waist.
Smart Images

Figure CN223546133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive plastic tailgate technology, and in particular to a non-metallic tailgate inner panel adhesive coating surface bridging structure. Background Technology
[0002] In response to global demands for reduced fuel consumption in automobiles and increasingly stringent emission regulations, lightweight products such as plastic tailgate inner panels are becoming increasingly popular. However, due to limitations in material properties and molding processes, plastic tailgate inner panels often exhibit poor performance in test conditions regarding lateral stiffness, torsional stiffness, and strut local stiffness. Utility Model Content
[0003] In view of the above problems, the purpose of this utility model is to provide a non-metallic tailgate inner panel adhesive bridging structure, which is used to design a bridging structure at the waist of the plastic tailgate inner panel to maintain adhesion with the tailgate outer panel, effectively ensuring the force transmission path and improving the local stiffness on both sides of the waist of the plastic tailgate inner panel, so as to overcome the shortcomings of the above-mentioned prior art.
[0004] This utility model provides a non-metallic tailgate inner panel adhesive-coated bridging structure, comprising: a bridging rib plate horizontally disposed in the waist area of the plastic tailgate inner panel; the bridging rib plate having an added adhesive surface for connection with the tailgate outer panel; the plastic tailgate inner panel being connected to the tailgate outer panel below the tailgate glass via the adhesive surface of the bridging rib plate; the bridging rib plate comprising: a rectangular box-shaped bridging rib; multiple reinforcing ribs disposed inside the rectangular box-shaped bridging rib; the rectangular box-shaped bridging rib extending downwards with connecting ribs for connection with the plastic tailgate inner panel; the upper end surface of the rectangular box-shaped bridging rib being coated with adhesive and serving as the adhesive surface for connection with the tailgate outer panel; the lower end surface of the rectangular box-shaped bridging rib being connected to the plastic tailgate inner panel via connecting ribs; and multiple reinforcing ribs being evenly distributed vertically disposed within the cavity of the rectangular box-shaped bridging rib.
[0005] As a preferred embodiment of this invention, the end face wall thickness of the rectangular box-shaped bridging reinforcement is 3mm, and the thickness of the reinforcing rib and connecting rib is 2mm.
[0006] The beneficial effects of this utility model are as follows:
[0007] 1. The plastic tailgate inner panel of this utility model has a bridging stiffener plate added to the adhesive surface, which not only makes the adhesive coating of the plastic tailgate inner panel and tailgate outer panel continuous and mutually supportive, but also improves the overall lateral and torsional stiffness of the tailgate, as well as the local stiffness of the gas strut area.
[0008] 2. The bridging structure designed at the waist position of the inner plastic tailgate panel of this utility model can effectively ensure the force transmission path and improve the local rigidity of the tailgate waist. Attached Figure Description
[0009] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:
[0010] Figure 1 This is a schematic diagram of the overall structure of the inner plastic tailgate panel in this embodiment.
[0011] Figure 2 for Figure 1 A sectional view along direction A.
[0012] The reference numerals in the attached drawings include: plastic tailgate inner panel 1, waist area 101, bridging plate 2, rectangular box-shaped bridging rib 201, reinforcing rib 202, connecting rib 203, and bonding surface 3. Detailed Implementation
[0013] See Figure 1-2 As shown, this embodiment provides a non-metallic tailgate inner panel adhesive-coated bridging structure, including: a bridging rib plate 2 horizontally disposed in the waist region 101 of the plastic tailgate inner panel 1; an adhesive surface 3 for connecting to the tailgate outer panel is added to the bridging rib plate 2; the plastic tailgate inner panel 1 is connected to the tailgate outer panel below the tailgate glass through the adhesive surface of the bridging rib plate 2; the bridging rib plate 2 includes: a rectangular box-shaped bridging rib 201; multiple reinforcing ribs 202 disposed inside the rectangular box-shaped bridging rib 201; a connecting rib 203 extending downward from the rectangular box-shaped bridging rib 201 for connecting to the plastic tailgate inner panel 1; and the upper end surface of the rectangular box-shaped bridging rib 201, after being coated with adhesive, serves as a connection to the tailgate outer panel. The lower end of the rectangular box-shaped bridging rib 201 is connected to the inner plastic tailgate panel 1 via the connecting rib 203. Multiple reinforcing ribs 202 are evenly distributed vertically within the inner cavity of the rectangular box-shaped bridging rib 201. Since the rectangular box-shaped bridging rib 201 adopts a rectangular box-shaped structure with an inner cavity, it can improve the support strength and also serve as the bonding surface 3 to connect with the outer tailgate panel. The end wall thickness of the rectangular box-shaped bridging rib 201 is 3mm, and the thickness of the reinforcing rib 202 and the connecting rib 203 is 2mm. The connecting rib 203 adopts a U-shaped structure with a central opening to connect with the inner plastic tailgate panel 1, thereby improving the connection strength with the inner plastic tailgate panel 1.
[0014] Working principle: The bridging structure on both sides of the waist of the inner panel 1 of the plastic tailgate is designed to maintain adhesion with the outer panel of the tailgate, which can effectively ensure the force transmission path, improve the local rigidity of both sides of the waist of the tailgate, and thus improve the structural strength of the connection between the waist of the inner panel 1 of the plastic tailgate and the glass.
[0015] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A non-metallic tailgate inner panel adhesive-coated surface bridging structure, characterized in that, include: A bridging rib plate is horizontally installed in the waist area of the inner panel of the plastic tailgate. The bridging rib plate has an added adhesive surface for connecting with the outer tailgate panel. The inner panel of the plastic tailgate is connected to the outer tailgate panel below the tailgate glass through the adhesive surface of the bridging rib plate. The bridging rib plate includes: a rectangular box-shaped bridging rib and multiple reinforcing ribs disposed inside the rectangular box-shaped bridging rib. The rectangular box-shaped bridging rib extends downward to have connecting ribs for connecting with the inner panel of the plastic tailgate. The upper end face of the rectangular box-shaped bridging rib is coated with glue and serves as the adhesive surface for connecting with the outer tailgate panel. The lower end face of the rectangular box-shaped bridging rib is connected to the inner panel of the plastic tailgate through the connecting ribs. The multiple reinforcing ribs are evenly distributed vertically disposed in the inner cavity of the rectangular box-shaped bridging rib.
2. The non-metallic tailgate inner panel adhesive-coated surface bridging structure according to claim 1, characterized in that, The rectangular box-shaped bridging reinforcement has a wall thickness of 3mm at the end face, and the reinforcing ribs and connecting ribs have a thickness of 2mm.