An inner protective lining plate of a lightweight automobile door panel interior part

Abstract

This invention discloses a lightweight automotive door panel interior trim panel, comprising: a lower door panel having an arc-shaped mounting portion extending rearward from the lower side, and having multiple positioning holes, snap-fit ​​holes, and surrounding positioning recesses; and an upper door panel extending above the lower door panel and connected by a curved transition, having a switch handle mounting hole and an audio speaker mounting hole located behind the switch handle hole; wherein, the upper door panel has an energy-absorbing transition portion, which is configured with multiple energy-absorbing recesses from the inside to the outside, and the width of the energy-absorbing recesses gradually increases from front to back. This invention, through the cooperation of the lower door panel and the upper door panel, and the curved transition, forms the interior trim panel of the automotive door panel, avoiding a one-piece regular molding, reducing weight, and simultaneously, the upper door panel has an energy-absorbing transition portion, with multiple energy-absorbing recesses continuously absorbing energy and damping vibration, improving durability.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive panel interior parts, specifically, it relates to an inner lining panel for lightweight automotive door panel interior parts. Background Technology

[0002] The interior door trim panel is a plastic part that covers the door sheet metal and internal mounting components. It houses mechanisms such as window regulators and door locks. If these mechanisms malfunction and require repair, the trim panel needs to be removed. Therefore, the trim panel is usually fixed to the door sheet metal with screws for easy disassembly. Currently, interior door trim panels are typically a single piece of panel with mounting posts or clips on the surface, which is then directly assembled to the inside of the door, and finally, interior and exterior trim pieces are installed. However, this type of trim panel has a simple structure, with a large counterweight at the top and bottom to increase strength. Areas lacking cushioning require additional polyester foam for sound absorption and energy reduction, making assembly and positioning very cumbersome. Furthermore, the extra parts can easily cause rattling noises, indicating an inefficient design.

[0003] Therefore, there is an urgent need for a lightweight door inner panel that can absorb energy through its own structure. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a lightweight inner lining for automotive door panel interior parts, so as to avoid the trouble of the previous door inner lining panels having a large counterweight, lacking their own cushioning and energy absorption, and being impractical.

[0005] To address the aforementioned technical problems, this invention discloses a lightweight automotive door panel interior trim panel, comprising:

[0006] The lower door panel has an arc-shaped mounting part that extends from the bottom to the rear and has multiple positioning holes, snap-fit ​​holes, and surrounding positioning recesses.

[0007] The upper door panel extends above the lower door panel and is connected by a curved transition. The upper door panel has a switch handle mounting hole and a speaker mounting hole located behind the switch handle mounting hole.

[0008] The upper side of the door liner has an energy-absorbing transition section, which is configured as multiple energy-absorbing cavities from the inside to the outside, and the width of the energy-absorbing cavities gradually increases from front to back.

[0009] According to one embodiment of the present invention, the arc-shaped mounting portion is used to mount a storage pocket.

[0010] According to one embodiment of the present invention, mounting posts are provided on the back of both the lower door panel and the upper door liner.

[0011] According to one embodiment of the present invention, the lower door panel is provided with three spaced first fixing buckles on the front side of the bottom and three spaced second adjusting buckles on the rear side.

[0012] According to one embodiment of the present invention, the second adjusting buckle includes protruding buckles at both ends and an insert buckle in the middle, wherein the insert buckle is configured as two buckles, one above the other.

[0013] According to one embodiment of the present invention, a plurality of spaced draft ridges are provided in the center of the curved upper side of the upper door liner, and the width of the draft ridges gradually decreases from the outside to the inside.

[0014] According to one embodiment of the present invention, the surface of the energy-absorbing transition portion has a downwardly curved energy-absorbing groove.

[0015] Compared with the prior art, the present invention can achieve the following technical effects:

[0016] The lower door panel and the upper door liner work together, with curved transitions, to form the inner liner of the car door panel, avoiding a one-piece regular molding and reducing the weight. At the same time, the upper side of the upper door liner has an energy-absorbing transition section, with multiple energy-absorbing cavities continuously absorbing energy and damping shocks, improving durability.

[0017] The curved mounting section makes it easy to install storage pockets.

[0018] The addition of switch handle mounting holes and speaker mounting holes improves assembly ease and enhances functionality.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the inner lining plate of the lightweight automotive door panel interior component according to an embodiment of the present invention.

[0022] Attached Figure Labels

[0023] The lower door panel 10, the arc-shaped mounting part 20, the positioning hole 21, the buckle hole 22, the positioning cavity 23, the upper door liner 30, the switch handle mounting hole 31, the speaker mounting hole 32, the bend 40, the drafting edge 41, the energy-absorbing transition part 50, the energy-absorbing cavity 51, the energy-absorbing groove 52, the first fixing buckle 61, and the second adjusting buckle 62. Detailed Implementation

[0024] The following will describe in detail the implementation of the present invention with reference to the accompanying drawings and embodiments, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the inner lining plate of the lightweight automotive door panel interior component according to an embodiment of the present invention.

[0026] As shown in the figure, a lightweight automotive door panel interior trim panel includes: a lower door panel 10, which has an arc-shaped mounting portion 20 extending from the lower side to the rear, and has multiple positioning holes 21, snap-fit ​​holes 22, and surrounding positioning recesses 23; an upper door panel 30 extending above the lower door panel 10 and connected by a curved arc 40, which has a switch handle mounting hole 31 and an audio mounting hole 32 located behind the switch handle mounting hole 31; wherein, the upper side of the upper door panel 30 has an energy-absorbing transition portion 50, which is configured with multiple energy-absorbing recesses 51 from the inside to the outside, and the width of the energy-absorbing recesses 51 gradually increases from front to back.

[0027] In one embodiment of the present invention, the lower door guard plate 10 corresponds to the lower part of the door panel, and the upper side extends into an upper door liner 30 through an arc 40. The upper door liner 30 is relatively thin to achieve a lightweight design, while the arc 40 provides a bend angle and offsets backward to meet the requirements of the inward reduction and thinning of the upper part of the door. In addition, an arc-shaped mounting part 20 is also provided on the lower side of the lower door guard plate 10. The arc-shaped mounting part 20 is used to install a storage pocket. It is assembled through a positioning hole 21, a snap-fit ​​hole 22, and an enclosed positioning recess 23 for easy positioning.

[0028] The upper door panel 30 has a switch handle mounting hole 31 and an audio speaker mounting hole 32 for mounting the switch handle panel and audio speaker panel respectively, providing multi-functional use. An energy-absorbing transition section 50 is also provided on the upper side of the upper door panel 30. This section consists of multiple outwardly recessed energy-absorbing cavities 51, with the width gradually increasing from the front to the rear of the door, creating a gradual transition effect. This not only enhances aesthetics but also allows for gradual energy absorption from the rear door closing point forward, maximizing shock absorption. Furthermore, the surface of the energy-absorbing transition section 50 has a downwardly curved energy-absorbing groove 52, which continuously bends and stretches, improving shock absorption performance.

[0029] The lower door guard plate 10 and the upper door liner 30 of the present invention are provided with mounting posts on their back sides to improve assembly toughness.

[0030] The bottom front of the lower door guard plate 10 is provided with three spaced first fixing buckles 61, and the rear side is provided with three spaced second adjusting buckles 62. The two work together to facilitate the reference positioning of the lower end.

[0031] Furthermore, the second adjusting buckle 62 includes protruding buckles at both ends and an insert buckle in the middle. The insert buckle is configured with upper and lower buckles, providing bidirectional protruding buckles, which can easily fix the buckle both inside and outside at the same time, making the installation more stable.

[0032] In addition, multiple draft ridges 41 are provided in the center of the upper arc 40 on the upper side of the door panel 30. The width of the draft ridges 41 gradually decreases from the outside to the inside and has a draft angle, which can enhance the strength of the arc 40 and improve its toughness.

[0033] In summary, the present invention uses the lower door panel 10 and the upper door liner 30 to cooperate and form an arc transition to create the inner liner of the car door panel, avoiding one-piece regular molding, reducing the counterweight, and the upper side of the upper door liner has an energy-absorbing transition part, which continuously absorbs energy and reduces shock by multiple energy-absorbing cavities, thereby improving durability.

[0034] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An inner lining panel for a lightweight automotive door panel interior component, characterized in that, include: The lower door panel has an arc-shaped mounting portion that extends rearward from the lower side and has multiple positioning holes, snap-fit ​​holes, and surrounding positioning recesses. The upper door panel extends above the lower door panel and is connected by a curved transition. The upper door panel has a switch handle mounting hole and a speaker mounting hole located behind the switch handle mounting hole. The upper side of the upper door liner has an energy-absorbing transition section, which is configured as multiple energy-absorbing cavities from the inside to the outside, and the width of the energy-absorbing cavities gradually increases from front to back.

2. The inner cladding panel of claim 1, wherein, The arc-shaped mounting part is used to install a storage pocket.

3. The inner cladding panel of claim 1, wherein, The lower door panel and the upper door liner are both provided with mounting posts on their back sides.

4. The inner cladding panel of claim 1, wherein, The lower door panel has a first fixing buckle with three intervals on the front side of the bottom and a second adjusting buckle with three intervals on the rear side.

5. The inner cladding panel of claim 4, wherein, The second adjusting buckle includes protruding buckles at both ends and an insert buckle in the middle, wherein the insert buckle is configured as two buckles, one above the other.

6. The inner cladding panel of claim 1, wherein, The upper door liner has multiple spaced draft ridges at the center of the curved surface, and the width of the draft ridges gradually decreases from the outside to the inside.

7. The inner cladding panel of claim 1, wherein, The surface of the energy-absorbing transition section has a downwardly curved energy-absorbing groove.

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