Front cabin cover plate

Abstract

The utility model discloses a front cabin cover plate, which relates to the technical field of automobile cover plates and comprises an inner plate and an outer plate which are connected with each other, and a honeycomb structure is arranged on the inner plate. Through the honeycomb structure on the inner plate, the overall front cabin cover plate is large in structural rigidity and light in weight, noise in a cabin is reflected through the honeycomb structure, energy is attenuated, radiation noise is reduced, an acoustic bag does not need to be additionally arranged, cost is low, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile cover plates, in particular to a front cabin cover plate. Background Art

[0002] The front cabin cover is generally composed of an outer panel and an inner panel. The outer panel is an exterior part and also serves to isolate dust and protect components in the cabin. For cabin covers made of iron-based materials, the inner panel is usually welded to the bottom of the outer panel. For cabin covers made of aluminum-based materials, the inner panel is usually riveted to the bottom of the outer panel. The inner panel is the skeleton of the front cabin cover and serves as a support and connection.

[0003] To ensure sufficient rigidity and modal stability, the inner panel of existing hoods often incorporates complex ribs and flange structures or the addition of reinforcement plates. This increases the weight of the hood and compromises lightweighting. While aluminum-based materials offer significant weight reduction, they also come at a high cost. To isolate engine noise and reduce pass-by noise, sound insulation pads and acoustic packing are typically installed beneath the inner panel. These pads must be heat-resistant and fire-resistant, resulting in high costs and prone to loosening and falling off over time.

[0004] For example, publication number CN215361562U, published on December 31, 2021, discloses an electric vehicle hood panel comprising: a hood outer panel; a hood inner panel connected to the hood outer panel; a latch reinforcement plate mounted on the hood outer panel, with the latch mounted on the latch reinforcement plate; and a strut reinforcement plate mounted on the hood outer panel, with the strut connected to the strut reinforcement plate. The aforementioned hood panel has poor noise isolation performance. Summary of the Invention

[0005] The purpose of the utility model is to provide a front hatch cover with better sound insulation effect. The utility model eliminates radiated noise by providing a honeycomb structure on the inner panel, thereby improving the sound insulation effect.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is: a front hatch cover, comprising an inner plate and an outer plate connected to each other, wherein a honeycomb structure is provided on the inner plate.

[0007] The inner plate is provided with a frame, and the frame is welded to the outer plate.

[0008] The honeycomb structure is arranged inside the frame.

[0009] The honeycomb structure includes a support beam, wherein the support beam is bent and extended toward the outer plate to form a lap plate, and the lap plate is provided with a through hole.

[0010] A gap is provided between the lap plate and the outer plate.

[0011] The gap between the lap plate and the outer plate is set to 1mm-2mm.

[0012] The gap between the lap plate and the outer plate is provided with glue.

[0013] The cross section of the through hole is a regular hexagon.

[0014] The cross section of the support beam is U-shaped.

[0015] The beneficial effects of the utility model are:

[0016] The honeycomb structure on the inner panel increases the structural rigidity and lightness of the entire front hatch cover. The honeycomb structure also reflects noise from the cabin, attenuating its energy and reducing radiated noise. This eliminates the need for a separate acoustic package, resulting in low cost and a simple structure.

[0017] The honeycomb structure includes a support beam, which is bent and extended toward the outer plate to form a lap plate. The lap plate is provided with through holes. The support beam increases the strength of the honeycomb structure, and the through holes on the lap plate are used to reduce noise.

[0018] A gap is provided between the lap plate and the outer plate to prevent the inner plate and the outer plate from resonating and making abnormal noises under external excitation. The gap between the lap plate and the outer plate is coated with glue to further increase the connection stability between the outer plate and the inner plate. The cross-section of the support beam is U-shaped to improve the structural stiffness, increase the modal, and prevent resonance with the engine. The U-shaped structure also has the advantage of strong load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the front hatch cover of the present utility model.

[0020] Figure 2 for Figure 1 Front view of the inner panel.

[0021] Figure 3 for Figure 2 Schematic diagram of part of the structure.

[0022] In the accompanying drawings: 1-outer plate, 2-inner plate, 3-frame, 4-honeycomb structure, 5-lap plate, 6-support beam, 7-through hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] like Figure 1-3As shown, the front cabin cover includes an inner panel 2 and an outer panel 1 connected to each other. A honeycomb structure 4 is provided on the inner panel 2. The honeycomb structure 4 on the inner panel 2 makes the overall front cabin cover have high structural rigidity and light weight. In addition, the noise in the cabin is reflected by the honeycomb structure 4, and the energy is attenuated, thereby reducing the radiated noise. There is no need to set up an additional acoustic package, which is low in cost and simple in structure.

[0026] A frame 3 is provided on the inner plate 2, and the frame 3 is welded to the outer plate 1. The frame 3 is arranged at the edge of the inner plate 2 and is arranged in a ring shape, so as to ensure stable welding of the frame 3 and the outer plate 1, and then the inner plate 2 and the outer plate 1 become a whole and support the outer plate 1.

[0027] The honeycomb structure 4 is arranged inside the frame 3, thereby ensuring that the honeycomb structure 4 is arranged between the outer plate 1 and the inner plate 2, thereby achieving noise reduction and sound insulation.

[0028] Specifically, the honeycomb structure 4 includes a support beam 6, which is bent and extended toward the outer plate 1 to form a lap plate 5. The lap plate 5 is provided with a through hole 7. The support beam 6 increases the strength of the honeycomb structure 4, and noise reduction is performed through the through hole 7 on the lap plate 5.

[0029] Specifically, a gap is provided between the lap plate 5 and the outer plate 1 to prevent the inner plate 2 and the outer plate 1 from generating resonance and abnormal sound under external excitation.

[0030] The gap between the lap plate 5 and the outer plate 1 is set to 1 mm-2 mm. In this embodiment, the gap is 1.5 mm.

[0031] The gap between the lap plate 5 and the outer plate 1 is provided with glue to further increase the connection stability between the outer plate 1 and the inner plate 2.

[0032] The cross section of the through hole 7 is a regular hexagon, thereby ensuring that the honeycomb structure 4 can stably perform noise reduction work.

[0033] Specifically, the cross section of the support beam 6 is U-shaped, which improves the structural rigidity, improves the modal state, and prevents resonance with the engine. The U-shaped structure also has the advantage of strong bearing capacity.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A front hatch cover, characterized in that: The invention comprises an inner plate (2) and an outer plate (1) connected to each other, wherein a honeycomb structure (4) is provided on the inner plate (2), wherein the honeycomb structure (4) comprises a support beam (6), wherein the support beam (6) is bent and extended toward the outer plate (1) to form a lap plate (5), and wherein the lap plate (5) is provided with a through hole (7).

2. The front hatch cover according to claim 1, characterized in that: A frame (3) is provided on the inner plate (2), and the frame (3) is welded to the outer plate (1).

3. The front hatch cover according to claim 2, characterized in that: The honeycomb structure (4) is arranged inside the frame (3).

4. The front hatch cover according to claim 3, characterized in that: A gap is provided between the lap plate (5) and the outer plate (1).

5. The front hatch cover according to claim 4, characterized in that: The gap between the lap plate (5) and the outer plate (1) is set to 1mm-2mm.

6. The front hatch cover according to claim 4, characterized in that: The gap between the lap plate (5) and the outer plate (1) is provided with glue.

7. The front hatch cover according to claim 3, characterized in that: The cross section of the through hole (7) is a regular hexagon.

8. The front hatch cover according to claim 3, characterized in that: The cross section of the support beam (6) is U-shaped.

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