A lightweight all-plastic tailgate inner panel
By setting up a U-cavity, main and auxiliary reinforcement beams and local reinforcement ribs in the inner panel of the all-plastic tailgate, the challenges of mechanical performance requirements of the all-plastic tailgate are solved, and good mechanical performance and the effect of reducing development costs are achieved.
Patent Information
- Application Number
- CN201910043294.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-01-17
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2039-01-17
AI Technical Summary
When the all-plastic tailgate meets the mechanical performance requirements, the existing design solutions have problems such as reinforcement ribs that increase product surface shrinkage, mold release difficulty, production cycle and cost increase.
A lightweight all-plastic tailgate inner panel was designed. By setting up a U-cavity, main reinforcement beam, secondary reinforcement beam, hinge installation area and local vertical and horizontal reinforcement ribs on the inner side of the inner panel car, a unique reinforcement design was formed. Solution to improve the mechanical performance of the tailgate.
It has achieved the meeting of tailgate mechanical performance requirements, reduced the difficulty and cost of product development, and provided a portable design solution, which has improved the development efficiency and performance of new projects.
Smart Images
Figure CN109760494B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of plastic tailgates and relates to a plastic tailgate, in particular to a lightweight all-plastic tailgate inner panel. Background Art
[0002] With the trend of automobile electrification, and the slow improvement of the battery life, how to design the car itself to be lightweight has become an important means to improve the battery life of electric vehicles. As an emerging lightweight technology solution, the all-plastic tailgate is favored by major OEMs due to its excellent lightweight effect. However, compared with traditional metal tailgates, the material properties of all-plastic tailgates are somewhat different from those of metals, so it is difficult to meet the mechanical performance requirements. This requires that in the product design stage, CAE must be used to drive product design and form a set of tailgate structure design methods of its own. In the design and development process of all-plastic tailgates, meeting the basic mechanical performance requirements of tailgates, such as bending stiffness, torsional stiffness, lateral stiffness, collision performance requirements, etc., is the difficult part, because compared with steel tailgates, the mechanical performance indicators of the materials used in all-plastic tailgates have decreased to varying degrees. Based on this situation, how to meet the basic performance requirements of tailgates through unique and excellent structural design solutions is very important. There are currently two solutions generally used in the design of all-plastic tailgate inner panels: 1. Add a large number of reinforcing ribs to strengthen the B side of the product; the disadvantage of this solution is that too many reinforcing ribs cause the product surface to easily shrink, and on the other hand, it also increases the difficulty of product demoulding; 2. Locally add metal inserts or composite reinforcements for gluing and strengthening. The disadvantage of this solution is that the number of products and production cycle time are increased, and the cost increases. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a lightweight all-plastic tailgate inner panel in view of the current status of the prior art, through which the basic mechanical performance requirements of the tailgate are successfully met during the development of the plastic tailgate.
[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a lightweight all-plastic tailgate inner panel, located at the glass window hole, characterized in that it includes a taillight mounting U-shaped cavity, a left main reinforcing beam, a right main reinforcing beam, a left secondary reinforcing beam, a right secondary reinforcing beam, a door lock mounting hole area, a left taillight maintenance hole area, a right taillight maintenance hole area, a left buffer block mounting position and a right buffer block mounting position on one side of the inner panel inside the vehicle, the taillight mounting U-shaped cavity is located directly below the glass window hole, the left main reinforcing beam and the right main reinforcing beam are connected to the door lock mounting hole area from the left taillight maintenance hole area and the right taillight maintenance hole area, and the left secondary reinforcing beam and the right secondary reinforcing beam point to the left buffer block mounting position and the right buffer block mounting position respectively.
[0005] In the above-mentioned lightweight all-plastic tailgate inner panel, the left main reinforcement beam, the right main reinforcement beam, the left secondary reinforcement beam and the right secondary reinforcement beam are all U-shaped.
[0006] In the above-mentioned lightweight all-plastic tailgate inner panel, a left quadrilateral and diagonal cross reinforcement unit and a right quadrilateral and diagonal cross reinforcement unit are arranged at the intersection of the left main reinforcement beam, the right main reinforcement beam, the left secondary reinforcement beam and the right secondary reinforcement beam on the outer side of the inner panel.
[0007] In the above-mentioned lightweight all-plastic tailgate inner panel, a left hinge installation area and a right hinge installation area are arranged in the spoiler area on the outer side of the inner panel, and oblique cross ribs and vertical reinforcement ribs are arranged in the middle area between the left hinge installation area and the right hinge installation area, and circular ring ribs are arranged at the oblique cross ribs.
[0008] In the above-mentioned lightweight all-plastic tailgate inner panel, a first local vertical reinforcement rib, a second local vertical reinforcement rib and a transverse reinforcement rib are arranged in the left and right upper corner areas of the inner panel. The transverse reinforcement rib runs through the entire upper area of the inner panel and is connected from the first local vertical reinforcement rib to the second local vertical reinforcement rib. There are left hinge reinforcement ribs and right hinge reinforcement ribs on both sides of the left hinge installation area and the right hinge installation area respectively.
[0009] Compared with the prior art, the advantage of the present invention is that it forms a unique tailgate reinforcement design method, which provides quantifiable data basis for subsequent plastic tailgate products, and the product structure design scheme of the present invention has good portability. In new plastic tailgate development projects, this scheme can be easily transplanted and good plastic tailgate mechanical properties can be obtained, thereby greatly reducing the difficulty and cost of plastic tailgate product development. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the front structure of the lightweight all-plastic tailgate inner panel;
[0011] Figure 2 yes Figure 1 A schematic diagram of the structure of the back inner panel on the outer side of the vehicle;
[0012] Figure 3 Book Figure 1 Schematic diagram of the structure of the spoiler on the outside side of the inner panel of the car. DETAILED DESCRIPTION
[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0014] In the figure, there is a U-shaped cavity 1 for mounting the taillight; a left main reinforcement beam 2; a right main reinforcement beam 3; a left secondary reinforcement beam 4; a right secondary reinforcement beam 5; a door lock mounting hole area 6; a left taillight maintenance hole area 7; a right taillight maintenance hole area 8; a left buffer block mounting position 9; a right buffer block mounting position 10; a left quadrilateral and a diagonal cross reinforcement unit 11; a right quadrilateral and a diagonal cross reinforcement unit 12; an oblique cross rib position 13; a reinforcement rib 14 at the left hinge; a reinforcement rib 15 at the right hinge; a transverse reinforcement rib 16; a first local vertical reinforcement rib 17; a second local vertical reinforcement rib 18; a left hinge mounting area 19; a right hinge mounting area 20; an annular rib position 21; and a vertical reinforcement rib position 22.
[0015] like Figure 1 As shown, the lightweight all-plastic tailgate inner panel is located at the glass window hole, and includes a taillight mounting U-shaped cavity 1, a left main reinforcement beam 2, a right main reinforcement beam 3, a left secondary reinforcement beam 4, a right secondary reinforcement beam 5, a door lock mounting hole area 6, a left taillight maintenance hole area 7, a right taillight maintenance hole area 8, a left buffer block mounting position 9 and a right buffer block mounting position 10 on one side of the inner panel inside the vehicle. The taillight mounting U-shaped cavity 1 is located directly below the glass window hole, the left main reinforcement beam 2 and the right main reinforcement beam 3 are connected to the door lock mounting hole area 6 from the left taillight maintenance hole area 7 and the right taillight maintenance hole area 8, the left secondary reinforcement beam 4 and the right secondary reinforcement beam 5 point to the left buffer block mounting position 9 and the right buffer block mounting position 10 respectively, and the left main reinforcement beam 2 and the right main reinforcement beam 3 are connected to the door lock mounting hole area 6 from the left taillight maintenance hole area 7 and the right taillight maintenance hole area 8. The strong beam 2, the right main reinforcing beam 3, the left auxiliary reinforcing beam 4 and the right auxiliary reinforcing beam 5 are all U-shaped. The biggest innovation of this patent is that the U-shaped reinforcement area formed by the left main reinforcing beam 2, the right main reinforcing beam 3, the left auxiliary reinforcing beam 4 and the right auxiliary reinforcing beam 5 can strengthen the entire plastic tailgate inner panel. Due to the existence of the left main reinforcing beam 2 and the right main reinforcing beam 3, the installation and connection strength of the entire left taillight, right taillight and door lock can be improved. Since the left auxiliary reinforcing beam 4 and the right auxiliary reinforcing beam 5 are pointing to the left and right sides, the outside can be strengthened, thereby obtaining good mechanical properties of the plastic tailgate, thereby greatly reducing the difficulty and cost of plastic tailgate product development.
[0016] like Figure 2 As shown, at the intersection of the left main reinforcing beam 2, the right main reinforcing beam 3, the left auxiliary reinforcing beam 4, and the right auxiliary reinforcing beam 5 on the outer side of the inner panel, a left quadrilateral and diagonal cross reinforcing unit 11 and a right quadrilateral and diagonal cross reinforcing unit 12 are provided. Here, the four reinforcing beams can be connected as a whole by the left quadrilateral and diagonal cross reinforcing unit 11 and the right quadrilateral and diagonal cross reinforcing unit 12, which has a significant mechanical effect, not only can the mechanical properties such as torsional stiffness of the tailgate inner panel be improved, but also support can be formed locally, such as Figure 3As shown, a left hinge installation area 19 and a right hinge installation area 20 are provided in the spoiler area on the outer side of the inner panel, and an oblique cross rib position 13 and a vertical reinforcing rib position 22 are arranged in the middle area between the left hinge installation area 19 and the right hinge installation area 20. An annular rib position 21 is provided at the oblique cross rib position 13, and the oblique and vertical directions can be reinforced by the oblique cross rib position 13 and the vertical reinforcing rib position 22. The annular rib position 21 plays an integral connecting role. The first local vertical reinforcing rib 17, the second local vertical reinforcing rib 18 and the transverse reinforcing rib are arranged at the left and right upper corners of the inner panel. 16, the transverse reinforcement rib 16 runs through the entire upper area of the inner panel, and is connected from the first local vertical reinforcement rib 17 to the second local vertical reinforcement rib 18, and the left hinge reinforcement rib 14 and the right hinge reinforcement rib 15 are respectively provided on both sides of the left hinge installation area 19 and the right hinge installation area 20. Here, the first local vertical reinforcement rib 17, the second local vertical reinforcement rib 18 and the transverse reinforcement rib 16 can improve the mechanical properties such as torsional stiffness of the left and right upper corner areas of the inner panel in the vertical and transverse directions, and the left hinge reinforcement rib 14 and the right hinge reinforcement rib 15 can increase the strength of the installed hinge.
[0017] 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 lightweight all-plastic tailgate inner panel, located at the glass window hole, characterized in that: The inner side of the inner panel includes a U-shaped cavity for mounting a taillight, a left main reinforcing beam, a right main reinforcing beam, a left secondary reinforcing beam, a right secondary reinforcing beam, a door lock mounting hole area, a left taillight maintenance hole area, a right taillight maintenance hole area, a left buffer block mounting position and a right buffer block mounting position. The U-shaped cavity for mounting a taillight is located directly below the glass window hole. The left main reinforcing beam and the right main reinforcing beam are connected to the door lock mounting hole area from the left taillight maintenance hole area and the right taillight maintenance hole area. The left secondary reinforcing beam and the right secondary reinforcing beam point to the left buffer block mounting position and the right buffer block mounting position respectively. The left main reinforcing beam, the right main reinforcing beam, the left secondary reinforcing beam and the right secondary reinforcing beam are all U-shaped. The left main reinforcing beam, the right main reinforcing beam, the left secondary reinforcing beam and the right secondary reinforcing beam are on the outer side of the inner panel. A left quadrilateral and a diagonal cross reinforcement unit and a right quadrilateral and a diagonal cross reinforcement unit are arranged at the intersection of the strong beam and the right auxiliary reinforcement beam; a left hinge installation area and a right hinge installation area are arranged in the spoiler area on the outer side of the inner panel, and oblique cross ribs and vertical reinforcement ribs are arranged in the middle area between the left hinge installation area and the right hinge installation area, and circular ribs are arranged at the oblique cross ribs; the first local vertical reinforcement ribs, the second local vertical reinforcement ribs and the transverse reinforcement ribs are arranged at the left and right upper corner areas of the inner panel, the transverse reinforcement ribs run through the entire upper area of the inner panel, and are connected from the first local vertical reinforcement ribs to the second local vertical reinforcement ribs, and the left hinge reinforcement ribs and the right hinge reinforcement ribs are provided on both sides of the left hinge installation area and the right hinge installation area respectively.