CN219056400U - PET intermediate layer combined type engine cover plate structure - Google Patents

Abstract

The utility model provides a PET (polyethylene terephthalate) sandwich composite engine cover plate structure which comprises a lower cover panel, an upper cover panel and a plate core sandwich layer clamped between the lower cover panel and the upper cover panel, wherein the plate core sandwich layer comprises at least one layer of foaming core material, the lower cover panel and the upper cover panel are both made of metal plate layers, and the foaming core material is made of PET foaming plates. The utility model fully utilizes the excellent performance of the sandwich structure of the plate core and applies the sandwich structure to the engine cover, and the upper surface and the lower surface of the sandwich structure are provided with a pair of thin and strong metal plates so as to bear axial load, bending moment and in-plane shearing force; the middle is provided with a two-layer thick and light plate core interlayer which separates the upper and lower metal plates to bear the load of the panel and the transverse shearing force; the metal plate and the plate core interlayer are glued and fixed together by adopting an adhesive, and the PET interlayer composite engine cover plate structure greatly reduces the weight of the engine cover plate and improves the performance of an engine cover.

Description

PET intermediate layer combined type engine cover plate structure

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to a PET (polyethylene terephthalate) interlayer composite engine cover plate structure.

Background

The engine cover is the most striking vehicle body component and is an important opening part of the vehicle body, so that the structure and the performance of the engine cover are good or bad, and the overall performance and the comfort of the vehicle body are directly influenced. Since the engine cover is required to bear the heat of the engine compartment and have enough strength to bear external pressure and ensure streamline appearance, the engine cover of the vehicle in the market is generally manufactured by steel plates, and the weight of the engine cover is conceivable.

At present, as shown in fig. 1, the structure of a conventional automobile engine cover mainly comprises an outer plate 1', an inner reinforcing plate 2', an inner soundproof cotton 3', and the like, and the engine cover has a large weight, so that the engine cover is laborious to open. In production, the sheet metal part of the automobile engine cover is high in manufacturing cost and waste. Does not meet the theme of light weight, low cost and high quality of the current automobiles.

In addition, with the progress of technology and materials in recent years, some super sports cars start to use carbon fiber composite materials to manufacture engine covers in order to improve strength and reduce weight, but the manufacturing cost is quite high, and the super sports cars belong to luxury goods of the masses. The development of materials and processes for automotive engine covers is to be promoted.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: aiming at the defects of the prior art, the PET interlayer composite engine cover plate structure is provided, so that the weight and the cost are reduced as much as possible on the premise of ensuring the strength and the safety performance.

The utility model adopts the following technical scheme for solving the technical problems:

the utility model provides a PET (polyethylene terephthalate) interlayer composite engine cover plate structure which comprises a cover lower panel, a cover upper panel and a plate core interlayer clamped between the cover lower panel and the cover upper panel, wherein the plate core interlayer comprises at least one layer of foaming core material, the cover lower panel and the cover upper panel are both made of metal plate layers, and the foaming core material is made of PET foaming plates.

Preferably, the lower panel of the cover and the upper panel of the cover are made of steel plates, aluminum plates, stainless steel plates or copper plates.

Preferably, the lower surface of the lower panel of the cover is arranged on the upper surface of the sandwich panel through a first adhesive layer.

Preferably, the upper surface of the upper panel of the cover is arranged on the lower surface of the sandwich panel of the board core through a second adhesive layer.

Preferably, the thickness of the lower panel of the cover is 0.6-1.2mm, and the thickness of the upper panel of the cover is 0.8-1.5mm.

Preferably, the plate core interlayer comprises at least two layers of foam core materials which are arranged in a layer-by-layer mode, and the foam core materials are arranged in a vertically corresponding or staggered mode.

Preferably, two adjacent layers of the foaming core materials are connected through a third adhesive layer.

Preferably, a plurality of reinforcing square tubes are buried in the foam core material at intervals.

Preferably, the thickness of the foam core is 8.0-15.0mm.

Preferably, the thickness of the first adhesive layer, the second adhesive layer and the third adhesive layer is 0.2-0.8mm.

Compared with the prior art, the utility model has the following technical effects:

the PET sandwich composite engine cover plate structure provided by the utility model fully utilizes the superior performance of the sandwich structure of the plate core, and is applied to an engine cover, and the upper surface and the lower surface of the cover plate are provided with a pair of thin and strong metal plates so as to bear axial load, bending moment and in-plane shearing force; the middle part is provided with two layers of thick and light foaming core materials, and the upper metal plate and the lower metal plate are separated to bear the load of the panel and the transverse shearing force; the metal plate and the foaming core material are glued and fixed together by adopting an adhesive, and the PET sandwich composite engine cover plate structure greatly reduces the weight of the engine cover plate and improves the performance of the engine cover.

Drawings

FIG. 1 is a schematic structural view of a conventional automotive engine cover;

FIG. 2 is a schematic cross-sectional view of a PET sandwich composite engine cover plate structure of the present utility model;

fig. 3 is a schematic diagram of a structure in which square tubes are embedded in a foam core material in a PET sandwich composite engine cover plate structure of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In some embodiments, for the problems of heavy weight, laborious opening, high manufacturing cost of the metal sheet of the automobile engine cover and waste, as shown in fig. 2, a PET sandwich composite engine cover structure is provided, which mainly includes a lower cover panel 10, an upper cover panel 30, and a core sandwich 20 sandwiched between the lower cover panel 10 and the upper cover panel 30, that is, the lower cover panel 10, the core sandwich 20 and the upper cover panel 30 are sequentially arranged from bottom to top.

The engine cover plate adopts the sandwich layer 20 of the plate core and mainly comprises a PET (polyethylene terephthalate) foam plate, the PET foam plate has light weight and high strength, and the adopted PET foam plate has excellent corrosion resistance, insulativity and environmental adaptability, and in addition, the PET foam plate also has unique rebound resilience, energy absorption, vibration energy absorption and good sound insulation and noise reduction effects.

The adopted core sandwich 20 has excellent mechanical structure performance when being applied to engine covers, and by arranging the lower cover panel 10 and the upper cover panel 30 on the upper surface and the lower surface of the core sandwich 20 respectively, the lower cover panel 10 and the upper cover panel 30 are utilized to bear axial load, bending moment and in-plane shearing force, and the middle core sandwich 20 is utilized to bear panel load and transverse shearing force.

Specifically, the panel core interlayer 20 used in the engine cover plate includes at least one layer of foam core material 21, and in order to ensure structural stability of the engine cover plate, the foam core material 21 may be arranged in a two-layer, three-layer, five-layer or other multi-layer laminated structure as required.

In terms of panel materials, the engine cover lower panel 10 and the cover upper panel 30 are made of thin and light sheet metal layers, which are made of steel plates, aluminum plates, stainless steel plates or copper plates. Compared with the engine cover manufactured by steel plates for vehicles in the prior market, the engine cover greatly reduces the weight of the cover, has enough strength and can bear external pressure.

In the process, as shown in fig. 2, the lower panel 10 of the cover, the sandwich layer 20 of the board core and the upper panel 30 of the cover are fixedly connected by adopting adhesive, so that the bending moment is mainly borne by the upper and lower panels, and the stress of the metal plate is uniformly distributed. The transverse shearing force is mainly borne by the middle plate core interlayer 20, and the plate core interlayer 20 provides transverse support for upper and lower thin metal plates, so that the local instability of the panel is avoided.

Specifically, the lower surface of the lower cover panel 10 is disposed on the upper surface of the core interlayer 20 through a first adhesive layer 11. And the upper surface of the upper cover panel 30 is disposed on the lower surface of the core interlayer 20 through a second adhesive layer 31. The first adhesive layer 11 and the second adhesive layer 31 are both acrylic adhesives.

In some of these embodiments, as shown in fig. 2, the lower cover panel 10 and the upper cover panel 30 are thin-sided sheet metal structures in terms of specific structural dimensions, while the core sandwich 20 has a certain thickness requirement as a main support structure.

Specifically, the thickness of the lower panel 10 of the cover is 0.6-1.2mm, and the thickness of the upper panel 30 of the cover is 0.8-1.5mm; the thickness of the core sandwich 20 is 5-25mm. Preferably, the thickness of the lower panel 10 of the cover is 0.8-1.0mm, and the thickness of the upper panel 30 of the cover is 1.0-1.2mm; the thickness of the core sandwich 20 is 8-20mm. More preferably, the thickness of the lower panel 10 is 1.0mm, and the thickness of the upper panel 30 is 1.0mm; the thickness of the core sandwich 20 is 10-15mm.

In some embodiments, as shown in fig. 2, to further increase the load and the transverse shear force that can be borne by the core sandwich layer 20, the core sandwich layer 20 is formed by two layers of foam core materials 21 that are arranged in layers, and the foam core materials 21 are arranged vertically correspondingly or in a staggered manner.

In some embodiments, as shown in fig. 3, in order to further improve the structural strength of the sandwich panel 20, a plurality of reinforcing square tubes 23 are buried in the foam core 21 at intervals, and the plurality of reinforcing square tubes 23 are arranged in parallel, so that a certain supporting effect is achieved, and the overall axial load capacity of the sandwich panel 20 can be further enhanced.

The reinforcing square tube 23 is a galvanized square tube, and the thickness of the galvanized square tube is equal to that of the foam core 21, that is, the reinforcing square tube 23 is directly embedded in the slot hole on the foam core 21 in an interference manner. The upper and lower surfaces of the reinforcing square tube 23 are directly connected with the corresponding adhesive layers in an adhesive manner respectively. In addition, the reinforcing square tube 23 may also be used as a threading tube for threading a wire harness, as needed.

Specifically, two adjacent layers of the foam core materials 21 are connected by gluing through a third adhesive layer 22, so as to ensure the stability of the composite structure between the two foam core materials 21. The third adhesive layer 22 is an adhesive, such as acrylic glue. The foam core 21 alone is thicker, but lighter in weight, with a thickness of 8.0-15.0mm, preferably 9.0-12mm, more preferably 10mm, relative to the facing.

In addition, as the bonding layer between the lower panel 10, the sandwich 20 and the upper panel 30, the first, second and third bonding layers 11, 31 and 22 are all formed by curing after being coated with adhesive, and are used for fixing two adjacent layers together, and the thickness of each bonding layer is 0.2-0.8mm; preferably, the thickness of each adhesive layer is 0.4-0.6mm; more preferably, each adhesive layer has a thickness of 0.5mm.

The only difference between the adopted foam core material sandwich structure and the stress analysis of the general plate shell structure is that the deflection generated by bending moment is considered in deflection calculation, and the influence of shearing force is considered. The distance between two metal plates of the sandwich structure is larger, so that the bending rigidity of the sandwich structure is much larger than that of a common plate-shell structure, and the instability critical stress is obviously improved.

The sandwich structure of the foam core material does not need riveting or welding, avoids stress concentration and improves fatigue resistance. The sandwich structure plate with the foam core material has the characteristics of strong quality, high strength, high rigidity, maximum fatigue resistance, smooth surface and the like, and can be used as a new material and a new process for manufacturing automobile front covers.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly, in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other without conflict;

finally, the foregoing description of the preferred embodiment of the utility model is provided for the purpose of illustration only, and is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a PET intermediate layer combined type engine cover plate structure, its characterized in that includes the board core intermediate layer of board core that panel, board cover upper panel and clamp were located under the board cover between panel, the board cover upper panel under the board cover, the board core intermediate layer includes at least one deck foaming core material, just under the board cover with the board cover upper panel all adopts the sheet metal layer, the foaming core material adopts the PET foaming board.

2. The PET sandwich composite engine cover plate structure of claim 1, wherein the lower cover panel and the upper cover panel are steel plates, aluminum plates, stainless steel plates or copper plates.

3. The PET sandwich composite engine cover plate structure of claim 1, wherein the lower surface of the cover lower panel is disposed on the upper surface of the core sandwich layer by a first adhesive layer.

4. The PET sandwich composite engine cover plate structure of claim 1, wherein the upper surface of the cover upper panel is disposed on the lower surface of the core sandwich layer by a second adhesive layer.

5. The PET sandwich composite engine cover plate structure of claim 1, wherein the cover lower panel thickness is 0.6-1.2mm and the cover upper panel thickness is 0.8-1.5mm.

6. The PET sandwich composite engine cover plate structure of claim 1, wherein the plate core sandwich comprises at least two layers of foam core materials which are arranged in layers, and the foam core materials are arranged in a vertically corresponding or staggered manner.

7. The PET sandwich composite engine cover plate structure of claim 1, wherein two adjacent layers of the foam core material are connected through a third adhesive layer.

8. The PET sandwich composite engine cover plate structure of claim 1, wherein a plurality of reinforcing square tubes are buried in the foam core material at intervals.

9. The PET sandwich composite engine cover plate structure of claim 1, wherein the foam core material has a thickness of 8.0-15.0mm.

10. The PET sandwich composite engine cover plate structure of claim 3, wherein the thickness of the first, second and third adhesive layers is 0.2-0.8mm.

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