Automotive engine cover assembly and assembling method thereof

Abstract

The invention relates to the field of automobile body parts, in particular to an automobile engine cover assembly and an assembling method thereof. The engine cover body is connected with an automobile body through a mounting mechanism; the mounting mechanism comprises an inserting mechanism and a fixing mechanism; the fixing mechanism comprises a plurality of fixing parts; each fixing part comprises a fixing hole formed in the engine cover body; the inserting mechanism comprises an inserting protrusion arranged on the engine cover body. The invention discloses a novel automotive engine cover structure which is simple in structure and convenient to mount and does not need to be opened in a conventional use state. Meanwhile, a windshield washer cover plate assembly is arranged on the engine cover body; the subsequent cleaning liquid supplementation is convenient; the problem that a cover needs to be opened when the cleaning fluid is supplemented is basically avoided.

Description

Technical Field

[0001] The invention relates to the field of vehicle body parts, in particular to a vehicle hood assembly and an assembling method thereof. Background Art

[0002] With the development of the automobile industry, the design and manufacturing technology of the vehicle hood assembly, as an important appearance and functional component of the vehicle, is also constantly improving.

[0003] Traditional hair cover assemblies are usually made of metal materials and use hinges and lock structures for opening and closing operations.

[0004] However, with the rise of new energy vehicles and the increasing demand for lightweighting, the design of modern bonnet assemblies pays more attention to lightweight materials, simplified structures and integrated functions.

[0005] Limitations of existing technologies

[0006] Weight issue: Traditional metal bonnet assemblies are heavy, which affects the vehicle's fuel economy and range.

[0007] Inadequate pedestrian protection: In a vehicle collision, the rigid structure of the bonnet assembly may cause pedestrian head injuries.

[0008] Assembly complexity: Traditional bonnet assemblies usually require complex assembly processes, including welding, riveting, etc., which not only increases production costs but also reduces assembly efficiency.

[0009] Balance between appearance and function: While pursuing lightweight and pedestrian protection, the hood assembly also needs to meet the requirements of vehicle appearance design, which poses a challenge to traditional design.

[0010] The existing patent - 201610606890.X - on the method for manufacturing a front hood assembly of an automobile does not clearly disclose the technical content for solving the above-mentioned technical problems.

[0011] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing hair cover. Summary of the invention

[0012] The object of the present invention is to provide a hair cover structure which is light in weight and does not need to be opened frequently.

[0013] In order to achieve the above object, the technical solution adopted by the present invention is:

[0014] A vehicle bonnet assembly comprises a bonnet body; the bonnet body is connected to a vehicle body through a mounting mechanism; the mounting mechanism comprises a plug-in mechanism and a fixing mechanism;

[0015] The fixing mechanism includes a plurality of fixing parts; each fixing part includes a fixing hole arranged on the hair cover body;

[0016] The plug-in mechanism comprises a plug-in protrusion arranged on the hair cover body.

[0017] The hair cover body comprises a hair cover outer plate and a hair cover inner plate; the hair cover outer plate is fixedly connected to the hair cover inner plate.

[0018] The washing pot cover plate assembly is provided on the cover body;

[0019] The washing kettle cover assembly comprises a cover body and a cover base, wherein the cover body is connected to the cover body through the cover base; the cover body can rotate around the cover base;

[0020] The cover body is provided with a washing pot groove body for arranging the washing pot cover plate assembly.

[0021] The cover plate body comprises a cover plate outer plate and a cover plate inner plate; the cover plate outer plate is connected to the cover plate base through the cover plate inner plate.

[0022] The cover plate base is connected to the hair cover body in a detachable connection manner.

[0023] The vehicle bonnet assembly also includes a bonnet decorative panel assembly; the bonnet body is provided with a decorative groove for arranging the bonnet decorative panel assembly; the bonnet decorative panel assembly includes a decorative panel body; the washing pot cover panel assembly and the bonnet decorative panel assembly are relatively spaced apart on the bonnet body; the decorative panel body includes a decorative panel outer panel and a decorative panel inner panel; the decorative panel outer panel is connected to the bonnet body through the decorative panel inner panel.

[0024] The hair cover outer plate, the hair cover inner plate, the decorative plate outer plate and the decorative plate inner plate are all non-metal parts.

[0025] The vehicle bonnet assembly also includes a bonnet decorative strip assembly; the bonnet decorative strip assembly includes a decorative strip body, an avoidance notch is provided on the decorative strip body, and a decorative strip blocking cover is provided on the avoidance notch.

[0026] The hair cover decorative strip assembly is distributed on the side of the hair cover body away from the front windshield; the hair cover decorative strip assembly is clamped on the hair cover body.

[0027] An assembly method of the vehicle bonnet assembly, the assembly method comprising the following steps:

[0028] Step 1: Assemble the cover body, washing pot cover assembly and cover decorative plate assembly at multiple stations;

[0029] Step 2: Install the hood body on the car body first;

[0030] Step 3: Assemble the washing pot cover plate assembly and the hair cover decorative plate assembly onto the hair cover body;

[0031] Step 4: Install the decorative strip body in the hood decorative strip assembly on the hood body; then connect it to the car body through screws through the decorative strip body and the hood body; then install the decorative strip plug cover on the decorative strip body;

[0032] Step 5: After completing step 4, the assembly of a vehicle hood assembly on the vehicle body is completed. If you need to repeat the assembly of a new vehicle hood assembly, just repeat steps 1-4.

[0033] The advantages of the present invention are:

[0034] The invention discloses a vehicle bonnet assembly and an assembling method thereof.

[0035] The invention discloses a novel vehicle hair cover structure which has a simple structure, is easy to install and does not need to be opened in a normal use state.

[0036] The bonnet assembly disclosed in the present invention has a bonnet body which is assembled from non-metal inner and outer layer plate structures, which can reduce the weight of the entire vehicle while ensuring its structural strength, thereby facilitating the lightweighting of the entire vehicle.

[0037] At the same time, a washing pot cover plate assembly is arranged on the cover body of the present invention, which is convenient for subsequent replenishment of cleaning liquid and basically avoids the problem of opening the cover when replenishing the cleaning liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0039] Figure 1 It is an axonometric diagram of the engine cover assembly;

[0040] Figure 2 It is the view of the hair cover assembly from four angles;

[0041] Figure 3 It is the three-view drawing of the outer plate of the engine cover;

[0042] Figure 4 It is a schematic diagram of the installation points on the outer plate of the hood and the inner plate of the hood when they are installed;

[0043] Figure 5 It is the view of the inner plate of the hair cover at four angles;

[0044] Figure 6 This is a schematic diagram of the front mounting points of the inner panel of the engine cover;

[0045] Figure 7 It is an exploded view of the washing pot cover assembly;

[0046] Figure 8 It is an exploded view of the engine cover trim assembly;

[0047] Fig. 9 This is an exploded view of the hood trim assembly;

[0048] Fig.10 is a schematic diagram of the structure of the first area of ​​the mounting point of the bonnet assembly on the vehicle body;

[0049] Figure 10-1 is a schematic diagram of the structure of the second area of ​​the mounting point of the bonnet assembly on the vehicle body;

[0050] Figure 10-2 It is a schematic diagram of the structure of the third area of ​​the mounting point of the bonnet assembly on the vehicle body;

[0051] Fig.11 This is a schematic diagram of the installation of the bonnet trim sub-assembly and the bonnet outer panel;

[0052] Figure 11-1 It is a bottom-up stereoscopic view of the engine cover trim sub-assembly;

[0053] Fig.12 This is a schematic diagram of the installation of the washing pot decorative panel sub-assembly and the inner panel of the cover;

[0054] Figure 12-1 is a bottom-up perspective view of the washing kettle trim sub-assembly;

[0055] Fig.13 It is a structural schematic diagram of the hood decorative strip sub-assembly;

[0056] Fig.14 It is a cross-sectional view of the local connection structure between the outer plate of the hood and the inner plate of the hood.

[0057] Fig.15 It is a microscopic schematic diagram of the cross-section of the local connection structure between the outer panel and the inner panel of the hood.

[0058] Fig.16 It is a schematic diagram of the structure of the first layer of the composite layer in the present invention.

[0059] Fig.17 It is a schematic diagram of the structure of the second layer of the composite layer in the present invention.

[0060] Fig.18 It is a schematic diagram of the structure of the third layer of the composite layer in the present invention.

[0061] Fig.19 For Fig.16 The structural diagram after adding the compiled structure is shown above.

[0062] Fig. 20 For the present invention Fig.17 Schematic diagram of the optimized structure.

[0063] Fig.21 For the present invention Fig.18 Schematic diagram of the optimized structure.

[0064] The marks in the above figure are:

[0065] 1-1, cover body, 1-11, cover outer plate, 1-12, cover inner plate, 1-2, washing pot cover plate assembly, 1-3, cover decorative plate assembly, 1-4, cover decorative strip assembly;

[0066] 101, fixing hole, 102, plug-in protrusion, 103, right decorative part buckle installation positioning point on the hair cover outer plate, 104, washing pot cover installation positioning hole on the hair cover inner plate;

[0067] 1-33. The bonnet decorative plate assembly is snap-fitted onto the bonnet outer plate with the positioning buckle;

[0068] 1-23. Install the positioning screws on the inner plate of the washing pot cover assembly.

[0069] 1. Inner board layer, 2. Composite layer, 3. Outer surface layer, 21. Prepreg fiberboard, 211. Fiber layer, 212. Resin layer. DETAILED DESCRIPTION

[0070] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0071] A vehicle bonnet assembly includes a bonnet body 1-1; the bonnet body 1-1 is connected to a vehicle body through a mounting mechanism; the mounting mechanism includes a plug-in mechanism and a fixing mechanism; the fixing mechanism includes a plurality of fixing parts; each fixing part includes a fixing hole 101 provided on the bonnet body 1-1; the plug-in mechanism includes a plug-in protrusion 102 provided on the bonnet body 1-1;

[0072] The vehicle bonnet assembly of the present invention comprises a bonnet body 1-1, wherein the bonnet body 1-1 comprises a bonnet outer plate 1-11 and a bonnet inner plate 1-12, which are connected by an edge wrapping structure to form a closed cavity structure to ensure the overall stiffness, strength and modal performance of the bonnet.

[0073] The bonnet inner panel 1-12 may adopt a honeycomb structure, which includes polygonal structural holes and weakened holes. These structures not only reduce weight but also provide necessary collapse performance during collision to protect pedestrians.

[0074] The mounting mechanism disclosed in the present invention is mainly used for mounting and assembling the bonnet body 1-1 on the vehicle; the bonnet assembly is connected to the vehicle body through a plurality of fixing parts, each fixing part is provided with a fixing hole 101 for mounting bolts or screws to ensure the stability of the bonnet on the vehicle body.

[0075] The hair cover body 1-1 is provided with a plug-in protrusion 102 for quick positioning and preliminary connection, thereby simplifying the assembly process.

[0076] In the present invention, a washing pot cover assembly 1-2 is provided on the cover body 1-1, and its structure includes a cover body 1-21 and a cover base 1-22; the cover body 1-21 is connected to the cover body 1-1 through the cover base 1-22, and can rotate around the cover base 1-22, so as to facilitate the opening of the washing pot cover assembly 1-2; this design not only meets the functional requirements, but also facilitates the subsequent use, and the cleaning liquid can be replenished in the washing pot without opening the cover, thereby reducing the frequency of opening the cover. At the same time, the washing pot cover assembly 1-2 of the present invention also improves the assembly efficiency through modular design.

[0077] Furthermore, in the present invention, the bonnet body 1-1 includes a bonnet outer plate 1-11 and a bonnet inner plate 1-12; the bonnet outer plate 1-11 is fixedly connected to the bonnet inner plate 1-12; the bonnet body 1-1 of the present invention is composed of the bonnet outer plate 1-11 and the bonnet inner plate 1-12, which are combined together by a fixed connection. This double-layer structure is the core component of the bonnet assembly and has the following characteristics: The bonnet outer plate 1-11: mainly plays the role of appearance decoration and protection, and usually needs to have good surface quality, weather resistance and impact resistance.

[0078] Bonnet inner panel 1-12: mainly provides structural support to ensure the strength and rigidity of the bonnet, and may integrate other functions (such as pedestrian protection, installation interface, etc.).

[0079] There are many ways to fix the connection between the cover outer plate 1-11 and the cover inner plate 1-12, and the common ones include:

[0080] Bonding: The outer panel and the inner panel are bonded together by glue or other adhesives, which can provide good sealing and integrity.

[0081] Welding and mechanical connection: For example, the outer panel and the inner panel are fixed together by mechanical means such as bolts and rivets, which is convenient for disassembly and maintenance.

[0082] Hemming process: The edge of the hood outer panel 1-11 is wrapped around the hood inner panel 1-12, and a fixed connection is achieved through stamping or other processes. This design is commonly seen in automobile hoods, which can not only ensure strength, but also hide the connection parts and improve the appearance quality.

[0083] Furthermore, in the present invention, the washing pot cover plate assembly 1-2 is provided on the cover body 1-1; the cover body 1-1 is provided with a special washing pot groove for arranging the washing pot cover plate assembly 1-2. This groove design ensures that the washing pot cover plate assembly 1-2 is tightly combined with the cover body 1-1, while not affecting the overall appearance and structural strength of the cover.

[0084] At the same time, the washing kettle cover assembly 1-2 in the present invention includes a cover body 1-21 and a cover base 1-22, and the cover body 1-21 is connected to the cover body 1-1 through the cover base 1-22; the cover body 1-21 can rotate around the cover base 1-22; in the present invention, the cover base 1-22 is fixedly installed on the cover inner plate 1-12, and the cover body 1-21 is a flippable structure to facilitate subsequent opening operations. The connection method between the cover body 1-21 and the cover base 1-22 of the present invention is essentially a fuel tank cover structure, that is, sealing and fixing are achieved by rotation or pressing; of course, in actual design, it can also be designed as a knob structure, and opening and closing are achieved by rotation operation. The specific selection can be made according to actual design needs.

[0085] The present invention provides a washing pot cover plate assembly 1-2 on the cover body 1-1, thereby avoiding the trouble of opening the cover when replenishing washing liquid because the washing pot cover plate assembly 1-2 is located in the front compartment.

[0086] At the same time, a washing pot trough body for arranging the washing pot cover plate assembly 1-2 is provided on the cover body 1-1 described in the present invention; it is essentially a sink structure, which facilitates the subsequent arrangement and placement of the washing pot cover plate assembly 1-2 and avoids the washing pot cover plate assembly 1-2 being exposed to the outside of the cover body 1-1.

[0087] In the present invention, the cover body 1-21 includes a cover outer plate 1-211 and a cover inner plate 1-212; the cover outer plate 1-211 is connected to the cover base 1-22 through the cover inner plate 1-212; the cover body 1-21 of the present invention is designed as a structure of a cover outer plate 1-211 and a cover inner plate 1-212, which well ensures the structural strength of the cover body 1-21.

[0088] At the same time, the cover outer plate 1-211 is the part that the user directly contacts, and usually has good appearance design and protection function; the cover inner plate 1-212 plays the role of structural support and connection.

[0089] The cover outer plate 1-211 is connected to the cover base 1-22 through the cover inner plate 1-212.

[0090] This double-layer design can provide the following advantages:

[0091] The cover inner plate 1-212 provides support for the outer plate, ensuring the durability and stability of the cover during frequent use.

[0092] The outer panel and the inner panel may be made of different materials. For example, the outer panel may be made of lightweight materials (such as plastic or composite materials) to reduce weight, while the inner panel may be made of metal or high-strength plastic to provide sufficient strength.

[0093] In the present invention, the cover base 1-22 is connected to the cover body 1-1 by a detachable connection method; such a configuration facilitates the assembly and subsequent replacement of the washing pot cover assembly 1-2 on the cover body 1-1. During subsequent collision repairs, the washing pot cover assembly 1-2 is located at the upper end of the cover and is generally less likely to be damaged. When the cover body 1-1 needs to be repaired later, the washing pot cover assembly 1-2 can be removed without replacing the washing pot cover assembly 1-2, thereby reducing maintenance costs.

[0094] Furthermore, in the present invention, the vehicle bonnet assembly also includes a bonnet decorative panel assembly 1-3; a decorative groove body for arranging the bonnet decorative panel assembly 1-3 is provided on the bonnet body 1-1; the bonnet decorative panel assembly 1-3 includes a decorative panel body; the washing pot cover panel assembly 1-2 and the bonnet decorative panel assembly 1-3 are relatively spaced apart on the bonnet body 1-1; the decorative panel body includes a decorative panel outer panel 1-31 and a decorative panel inner panel 1-32; the decorative panel outer panel 1-31 is connected to the bonnet body 1-1 through the decorative panel inner panel 1-32; the present invention designs the bonnet decorative panel assembly 1-3; mainly to increase the symmetry and aesthetics of the entire vehicle, and the bonnet decorative panel assembly 1-3; is a detachable and replaceable structure, which is convenient for subsequent vehicle owners to independently replace the function of this area and improve the modifiability of the entire vehicle.

[0095] A special decorative groove is provided on the bonnet body 1-1 for arranging the decorative panel assembly; this groove design can hide the connecting parts, so that the decorative panel and the bonnet body 1-1 are more closely combined, thereby improving the overall aesthetics.

[0096] Furthermore, in the present invention, the bonnet outer panel 1-11, the bonnet inner panel 1-12, the decorative panel outer panel 1-31 and the decorative panel inner panel 1-32 are all non-metallic parts; such a design contributes to the lightweight design of the entire vehicle.

[0097] Furthermore, in the present invention, the vehicle bonnet assembly also includes a bonnet decorative strip assembly 1-4; the bonnet decorative strip assembly 1-4 includes a decorative strip body 1-41, the decorative strip body 1-41 is provided with an avoidance notch 1-43, and the avoidance notch 1-43 is provided with a decorative strip blocking cover 1-42; the bonnet decorative strip assembly 1-4 is distributed on the side of the bonnet body 1-1 away from the front windshield; the bonnet decorative strip assembly 1-4 is snap-connected to the bonnet body 1-1; in the present invention, the bonnet decorative strip assembly 1-4 is arranged at the front of the vehicle The end plays a decorative and aesthetic role. In addition, the bonnet decorative strip assembly 1-4 also acts as a reinforcement member, which can reinforce the front end of the bonnet body 1-1 to ensure the structural strength of the front end of the bonnet. During the actual installation and connection, the decorative strip body 1-41 is clamped on the front end of the bonnet body 1-1, and the subsequent fastening screws pass through the decorative strip body 1-41 and the bonnet body 1-1 and are fixed to the vehicle body, thereby well ensuring the structural strength of the fastening screw connection; and the decorative strip plugging cover 1-42 plays a good sealing role to avoid exposure of the fastening screws.

[0098] In the present invention, it is required that the decorative strip cover 1 - 42 is connected to the decorative strip body 1 - 41 by snap-fitting.

[0099] An assembly method of the vehicle bonnet assembly, the assembly method comprising the following steps:

[0100] Step 1: Assemble the cover body 1-1, the washing pot cover plate assembly 1-2 and the cover decorative plate assembly 1-3 at multiple stations;

[0101] Step 2: Install the hood body 1-1 on the vehicle body first;

[0102] Step 3: Assemble the washing pot cover plate assembly 1-2 and the cover decorative plate assembly 1-3 onto the cover body 1-1;

[0103] Step 4: Install the decorative strip body 1-41 in the hair cover decorative strip assembly 1-4 on the hair cover body 1-1; then connect the decorative strip body 1-41 and the hair cover body 1-1 to the vehicle body by screws; then install the decorative strip plug cover 1-42 on the decorative strip body 1-41;

[0104] Step 5: After completing step 4, the assembly of a vehicle hood assembly on the vehicle body is completed. If you need to repeat the assembly of a new vehicle hood assembly, just repeat steps 1-4.

[0105] Based on the above assembly sequence, the present invention facilitates the assembly operation of the vehicle bonnet assembly on the whole vehicle.

[0106] Step 1: Multiple stations for assembly

[0107] Modular production: the cover body 1-1, the washing pot cover plate assembly 1-2 and the cover decorative plate assembly 1-3 are assembled at different stations respectively.

[0108] This modular production method can improve production efficiency, reduce assembly errors, and facilitate quality control.

[0109] Each component can be produced in parallel at different workstations, shortening the overall production cycle.

[0110] Modular production facilitates individual quality testing of each component, ensuring the reliability of the final assembly.

[0111] Step 2: Install the cover body 1-1;

[0112] Initial positioning and fixing: Install the hood body 1-1 onto the vehicle body, quickly position it using a plug-in mechanism, and then securely fix it onto the vehicle body using a fixing mechanism (such as bolts or screws).

[0113] Quick positioning: The plug-in mechanism can quickly realize the initial positioning of the cover body 1-1, thereby improving assembly efficiency.

[0114] Stability: Through multiple fixing points, the hood body 1-1 is more stable on the vehicle body and can withstand various loads during driving.

[0115] Step 3: Assemble the washing pot cover assembly 1-2 and the hair cover decorative plate assembly 1-3

[0116] Sequential assembly: first install the washing pot cover plate assembly 1-2 into the washing pot groove of the cover body 1-1, and then install the cover decorative plate assembly 1-3 into the decorative groove.

[0117] Interval distribution: The washing kettle cover plate assembly 1-2 and the cover decorative plate assembly 1-3 are relatively spaced apart on the cover body 1-1, ensuring a balance between function and aesthetics.

[0118] The independent design of the washing pot cover assembly 1-2 is convenient for users to operate, and washing liquid can be added without opening the entire cover.

[0119] The design of the decorative panel assembly improves the overall appearance of the bonnet while hiding structures such as the mounting bolts.

[0120] Step 4: Install the hair cover decorative strip assembly 1-4

[0121] Clip-on and screw-on fixing:

[0122] The decorative strip body 1-41 is clipped onto the hair cover body 1-1. This clipping method facilitates quick installation.

[0123] The decorative strip body 1-41 and the hood body 1-1 are connected to the vehicle body by screws to further ensure their stability.

[0124] Finally, the decorative strip cover 1-42 is installed to close the avoidance gap 1-43 to improve the overall aesthetics.

[0125] The snap-on design allows the trim strip assembly to be installed quickly without the need for complicated tools.

[0126] The design of the decorative strip blocking cover 1-42 hides the avoidance gap 1-43, making the surface of the hair cover neater.

[0128] Embodiment 1:

[0129] The hair cover assembly disclosed in the present invention mainly comprises a hair cover inner plate 1-12, a hair cover outer plate 1-11, a washing pot cover plate sub-assembly, a hair cover decorative plate sub-assembly, and a hair cover decorative strip sub-assembly.

[0130] The hair cover inner plate 1-12 and the hair cover outer plate 1-11 are connected by a bonding process.

[0131] The cover base 1-22 is connected to the bonnet inner plate 1-12 by bolts; the bonnet decorative plate is connected to the bonnet outer plate 1-11; the bonnet assembly is connected to the vehicle body by bolts; the bonnet decorative strip is snap-fitted to the bonnet body 1-1.

[0132] The bonnet assembly disclosed by the invention is directly fastened to the vehicle body by bolts.

[0133] The bonnet outer panel 1-11 adopts PP+EPDM-T30 plastic and the bonnet inner panel 1-12 adopts PP-LGF40 plastic as main materials, which can ensure their own strength while meeting the sealing function of the front engine room of the new energy vehicle.

[0134] Moreover, the structural weight is significantly reduced compared with the traditional bonnet, which effectively increases the cruising range of new energy vehicles. At the same time, the opening and closing structure of the traditional bonnet is abandoned, the hinges and locks are cancelled, so that the cost of the bonnet assembly is further reduced, achieving the purpose of reducing costs and increasing efficiency.

[0135] like Figure 1 The cover assembly shown includes a washing pot cover plate assembly 1-2, a cover decorative plate assembly 1-3 and a cover decorative strip assembly 1-4.

[0136] The three views of the engine cover assembly and its axonometric view are as follows Figure 2 shown.

[0137] Among them Figure 3 The outer panel 1-11 of the hair cover shown in the figure is made of PP+EPDM-T30 plastic integral injection molding, and a bonding position is reserved on the inner side of the outer panel 1-11. Figure 3 As shown in the bottom view. Figure 5 The hood inner panel 1-12 shown in the figure is made of PP-LGF40 plastic as the main material for one-piece injection molding. The hood inner panel 1-12 adopts a multiple hollow reinforcement rib design. The hood inner panel 1-12 and the hood outer panel 1-11 are bonded into a whole through a bonding tool. At the same time, the front of the hood inner panel 1-12 and the front of the hood outer panel 1-11 are further tightened by three bolts to ensure the consistency of the inner and outer panels of the hood. Figure 4 shown.

[0138] The bonnet inner panels 1-12 and outer panels of the present invention are lighter and less expensive than conventional sheet metal parts, and when used in new energy vehicles, there is no need to consider adverse effects such as engine heat dissipation and thermal deformation.

[0139] Figure 6 The diagram shows the main installation points of the front of the bonnet inner panel 1-12, including the bolt installation points between the bonnet inner panel 1-12 and the outer panel, the snap-on installation points of the bonnet decorative strip on the bonnet inner panel 1-12, and the X-direction bolt tightening points of the bonnet assembly on the vehicle body.

[0140] Figure 7 The figure shows a schematic diagram of the disassembly of the washing pot cover subassembly, wherein the washing pot cover outer plate 1-211, the washing pot cover inner plate 1-212, and the washing pot cover base 1-22 are all made of plastic injection molding, with a light structure, low cost, and easy installation and simple operation.

[0141] The outer plate 1-211 of the washing pot cover and the inner plate 1-212 of the washing pot cover are connected into a whole through a buckle, and then connected to the washing pot cover base 1-22 through a cantilever / bolt shaft structure, so that the washing pot cover can be opened and closed. The washing pot cover is positioned and installed with the inner plate 1-12 of the cover through 4 screws at the bottom. Fig.12 As shown. This mechanism is convenient for customers. After the cover assembly is installed, customers can open the cover of the washing pot to add windshield washer water and other operations, avoiding the traditional step of opening and closing the cover assembly.

[0142] At the same time, the washing pot cover actuator and the washing pot cover are positioned and installed by two screws, and the wire end is connected to the car computer. The user can realize the switch and closing of the washing pot cover through the car computer, which further facilitates customers to add windshield washer water by themselves.

[0143] Figure 8 The figure shows the schematic diagram of the disassembly of the bonnet decorative panel subassembly. The bonnet decorative panel subassembly is also made of plastic injection molding. Its main structure is that the decorative panel outer panel 1-31 and the decorative panel inner panel 1-32 are snap-fitted and formed, and then the bonnet decorative panel subassembly is snap-fitted and installed with the bonnet outer panel 1-11 through the bottom clamping claws. Fig.11 shown.

[0144] The main function of the cover decorative plate is to be symmetrical with the washing kettle cover plate and have a beautiful shape. At the same time, it can also serve to cover the mounting bolts of the bottom cover assembly.

[0145] Fig. 9 The figure shows the schematic diagram of the disassembly of the bonnet decorative strip subassembly. The bonnet decorative strip subassembly is mainly composed of a left decorative strip blocking cover, a right decorative strip blocking cover, and a decorative strip body 1-41. The left and right decorative strip blocking covers of the bonnet decorative strip are snap-fitted with the bonnet decorative strip to form a subassembly. Then, the bonnet decorative strip subassembly is installed with the bonnet assembly by screws through self-positioning. Fig.13 The hood decorative strip mainly achieves the effect of aesthetically pleasing appearance by covering the front mounting point of the hood inner plate 1-12.

[0146] Fig.10 The figure shows the installation diagram of the bonnet assembly on the vehicle body, wherein the front part of the bonnet assembly is plugged into the positioning hole of the vehicle body through the middle positioning plug-in protrusion 102 inside the bonnet to ensure the Y-direction position of the bonnet assembly, and at the same time, the front part is fastened to the vehicle body through two bolts to ensure the X-direction position of the bonnet assembly on the vehicle body, and the two bolts on the left and right of the rear part of the bonnet assembly are fastened to the vehicle body mounting bracket to ensure the Z-direction position of the bonnet assembly.

[0147] The present invention is assembled with the vehicle body by bolts and buckles. Compared with the traditional bonnet assembly, two bonnet hinges and one bonnet lock are optimized. The hinge tooling and fixtures in the later production are simultaneously optimized, which greatly saves production costs. At the same time, the bonnet is made of PP plastic material, which is lighter than the traditional sheet metal bonnet, greatly reducing the weight of the vehicle body, so that a longer cruising range can be obtained with the same battery capacity.

[0148] Embodiment 2;

[0149] In the present invention, the hood outer panel 1-11 includes a composite layer and an outer layer; the hood inner panel 1-12 includes an inner panel layer; the inner panel layer 1, the composite layer 2 and the outer layer 3 are distributed in sequence; the composite layer 2 includes at least one prepreg fiberboard 21, each of the prepreg fiberboard 21 includes a resin layer 212 and a fiber layer 211 embedded in the resin layer 212; the present invention uses the inner panel layer 1, the composite layer 2 and the outer layer 3 in combination, and this multi-layer structure can better disperse and absorb collision energy and improve the safety performance of the vehicle in a collision; at the same time, by limiting the fiber distribution mode of the fiber layer 211, the strength of the composite layer 2 can be changed as needed, and then the local structural strength of the structural member can be changed as needed; it can be selected and used as needed; the scope of application of the present invention is greatly improved.

[0150] The hood body 1-1 disclosed in the present invention mainly includes an inner plate layer 1, a composite layer 2 and an outer layer 3; in the present invention, the inner plate layer 1, the composite layer 2 and the outer layer 3 are distributed in sequence; through the three-layer composite structure, the structural strength of the hood body 1-1 can be guaranteed, and the inner plate layer 1 mainly plays an internal supporting role, and the composite layer 2 includes at least one prepreg fiberboard 21, each of the prepreg fiberboard 21 includes a resin layer 212 and a fiber layer 211 embedded in the resin layer 212; the prepreg fiberboard 21 in the composite layer 2 can effectively absorb and disperse the collision energy during a collision, reducing the impact of the collision force on the vehicle and the occupants; by designing the thickness, number of layers and fiber orientation of the prepreg fiberboard 21, the controllability of the collision force can be achieved, and the energy transfer path during the collision process can be optimized.

[0151] The prepreg fiberboard 21 is composed of high-strength fibers and resin, has excellent mechanical properties, and can effectively improve the strength and rigidity of the structural parts.

[0152] Compared with traditional metal materials, the prepreg fiberboard 21 has a lower density and can significantly reduce the weight of the vehicle, thereby improving fuel efficiency and handling performance.

[0153] The prepreg fiberboard 21 has high fatigue resistance and can maintain stable mechanical properties during long-term use.

[0154] Composite materials have good resistance to environmental corrosion and can extend the service life of structural parts.

[0155] Controllable collision force: By rationally designing the thickness of the prepreg fiberboard 21, the type and content of the fiber, the performance of the resin and other parameters, the collision force can be precisely controlled. During the collision, the prepreg fiberboard 21 can deform and absorb energy in a predetermined manner, thereby effectively reducing the impact force of the collision on the vehicle and the occupants.

[0156] High strength and light weight: The high strength characteristics of the fiber layer 211 and the bonding effect of the resin layer 212 make the entire structural component have high strength and rigidity, which can meet the mechanical performance requirements of the vehicle during driving.

[0157] At the same time, the density of the prepreg fiberboard 21 is relatively low, which helps to achieve a lightweight design of the vehicle and improve fuel economy and power performance.

[0158] Good energy absorption performance: During a collision, the fiber layer 211 and the resin layer 212 in the prepreg fiberboard 21 will interact with each other, and through processes such as fiber stretching and breaking and resin deformation, a large amount of collision energy is absorbed, reducing energy transfer to the interior of the vehicle and protecting the safety of passengers.

[0159] In addition, more importantly, the present invention can reduce the investment in molds; that is, during conventional production, if the structural design of the initial product is unreasonable, there is no need to open a new set of molds. It is only necessary to modify the fiber arrangement and fiber thickness of the composite layer to achieve controllable anisotropic properties of the plate, thereby obtaining the desired product on the original mold, reducing development time, saving mold costs, and increasing material utilization rate.

[0160] Furthermore, in the present invention, the fiber layers 211 in adjacent prepreg fiberboards 21 are arranged in the same or different manners.

[0161] In the present invention, when the fiber layers 211 are arranged in the same manner, it can be well ensured that the mechanical properties of adjacent prepreg fiberboards 21 in a certain direction are uniform, which is convenient for design and calculation.

[0162] Simple process: The fiber layers 211 with the same arrangement are easier to control during the manufacturing process, and the molding process is relatively simple, which is suitable for large-scale production; Reduce wrinkles: During the thermoforming process, reducing the superposition of fiber layers 211 at different angles can effectively reduce the generation of wrinkles.

[0163] In the present invention, when the fiber layers 211 in adjacent prepreg fiberboards 21 are arranged differently, the isotropy of the composite layer 2 can be ensured, and its bearing capacity under multi-directional loads can be enhanced; the mechanical properties can be optimized: the fiber layers 211 with different arrangements can effectively disperse stress, reduce stress concentration, and improve the material's fatigue resistance and damage tolerance.

[0164] In actual design, the arrangement of the fiber layer 211 can be flexibly selected according to specific application needs and performance requirements to achieve the best balance between performance and cost-effectiveness.

[0165] Furthermore, in the present invention, the fiber layer 211 in each prepreg fiberboard 21 is a single-layer or multi-layer layered fiber.

[0166] Single-layer fiber: Single-layer fiber usually refers to fibers arranged continuously in one direction to form unidirectional prepreg (UD).

[0167] This structure has excellent mechanical properties in the axial direction of the fiber, but exhibits anisotropy.

[0168] Multi-layered fiber: Multi-layered fiber can be the superposition of multiple layers of unidirectional fibers, or it can be a mixed laying of fibers in different directions (such as 0°, 90°, ±45°).

[0169] This structure can optimize mechanical properties through fiber layer design, giving it better load-bearing capacity in multiple directions.

[0170] Single layer fiber:

[0171] Advantages: It has high strength and high modulus in the fiber direction and is suitable for bearing unidirectional loads.

[0172] Multi-Layered Fibers:

[0173] Advantages: By stacking fiber layers 211 in different directions, isotropy or approximately isotropy can be achieved, which is suitable for complex load conditions.

[0174] Furthermore, in the present invention, each layer of the layered fibers includes unidirectional tapes and / or woven fibers; in the prepreg fiberboard 21, the fiber layer 211 can be composed of unidirectional tape fibers and / or woven fibers. This design can be optimized according to different application needs and performance requirements.

[0175] Unidirectional tape fiber; unidirectional tape fiber is composed of parallel arranged continuous fibers with consistent fiber direction, and has high strength and high stiffness; it exhibits excellent mechanical properties in the fiber direction, but is anisotropic; it is suitable for structural parts that bear unidirectional loads.

[0176] In composite materials, unidirectional tape fibers can improve multi-directional load-bearing capacity by optimizing the ply angles (such as 0°, 90°, ±45°).

[0177] Woven fiber: Woven fibers form a two-dimensional or three-dimensional structure by interweaving warp and weft, and have good impact resistance and isotropy; the porosity and fiber distribution uniformity of woven fibers will affect the mechanical properties of the composite material.

[0178] In the present invention, the mixed layer design of woven fibers and unidirectional tape fibers can give full play to the advantages of both and make up for the shortcomings of a single material.

[0179] The mixed layup of woven fibers and unidirectional tape fibers can optimize the mechanical properties: the unidirectional tape fibers provide high strength and high stiffness, the woven fibers provide impact resistance and isotropy, and the mixed layup can combine the advantages of both; improve damage tolerance: the mixed layup design can effectively disperse stress and improve the damage tolerance and fatigue performance of composite materials.

[0180] In summary, the fiber layer 211 in the prepreg fiberboard 21 can be composed of unidirectional tape fibers and / or woven fibers. The high performance and multifunctionality of the composite material can be achieved through a mixed layer design to meet the needs of different application scenarios.

[0181] Furthermore, in the present invention, the unidirectional tapes and / or braided fibers in each layer of the layered fibers include yarn strips; the yarn strips in the unidirectional tapes and / or braided fibers have the same or different thicknesses; the present invention can control the structural strength of the layered fibers by controlling the thickness of the yarn strips, and then control the structural strength of the composite layer 2. The ultimate goal is to control the structural strength of the structural parts. In actual use, the controllability of the collision force can be achieved, and the energy transfer path during the collision process can be optimized.

[0182] Furthermore, in the present invention, the inner panel layer 1 comprises a single-layer resin board; the resin layer 212 in each prepreg fiberboard 21 is a thermoplastic resin or a thermosetting resin; the outer surface layer 3 is a resin layer 212 board; and is made of thermoplastic resin.

[0183] The inner panel layer 1 of the present invention is composed of a single-layer resin board, which provides basic support for the entire structure to ensure the overall rigidity and stability; in the event of a collision or impact, the resin board can absorb part of the energy by deformation and play a buffering role; resin materials usually have good heat insulation and sound insulation properties, which help to improve the comfort inside the vehicle.

[0184] Resin panels are lighter than traditional metal materials, helping to reduce vehicle weight and improve fuel efficiency.

[0185] The resin material has good resistance to chemical corrosion, extending the service life of the components.

[0186] In the present invention, the composite layer 2 is composed of prepreg fiberboard 21, each fiberboard layer comprises a resin layer 212 and a fiber layer 211, and the resin layer 212 can be a thermoplastic resin or a thermosetting resin.

[0187] The fiber layer 211 may include unidirectional tape fibers: the fibers have the same direction, provide high strength and high modulus, and are suitable for bearing unidirectional loads; or woven fibers: multi-directional load-bearing capacity is formed by interweaving warp and weft, and have good impact resistance and isotropy.

[0188] Thermosetting resin: After curing, it forms an irreversible three-dimensional network structure with high strength and high modulus, suitable for parts requiring high rigidity.

[0189] Thermoplastic resin: has good toughness and recyclability, suitable for parts that require a certain degree of flexibility and rapid prototyping.

[0190] High strength and light weight: The combination of the fiber layer 211 and the resin layer 212 provides excellent mechanical properties while maintaining light weight.

[0191] Energy absorption and dispersion: During a collision, the fiber layer 211 can effectively absorb and disperse energy, reducing the impact of the impact on the occupants in the vehicle.

[0192] Design flexibility: By adjusting the fiber arrangement and resin type, the performance of the composite layer 2 can be optimized to meet different application requirements.

[0193] Outer surface layer 3: Resin layer 212 plate (thermoplastic resin) The outer surface layer 3 is composed of a resin layer 212 plate made of thermoplastic resin; its main functions are appearance protection: providing good weather resistance and UV resistance, protecting the internal structure from the influence of the external environment; impact resistance: thermoplastic resin has good toughness and can withstand a certain degree of impact; aesthetics: surface treatment (such as painting, film pasting, etc.) can be performed to improve the appearance quality of the vehicle.

[0194] Thermoplastic resins: such as polycarbonate (PC), polypropylene (PP), polyethylene (PE), etc., have good toughness and processability; Recyclability: Thermoplastic resins can be reshaped by heating and have good recyclability; Easy processing: They can be quickly formed through injection molding, extrusion and other processes, and are suitable for large-scale production.

[0195] The coordinated design of the inner plate layer 1, the composite layer 2 and the outer surface layer 3 is the key to achieving the high performance of the hair cover body 1-1: in the present invention, the inner plate layer 1: serves as the basic support and absorbs part of the impact energy; the composite layer 2: further absorbs and disperses the energy through the synergistic effect of the fiber layer 211 and the resin layer 212; the outer surface layer 3: provides additional impact protection to prevent external impact from directly acting on the internal structure.

[0196] In addition, the inner plate layer 1 and the composite layer 2 of the present invention provide good corrosion resistance and durability through the combination of resin and fiber.

[0197] Outer layer 3: Protects the internal structure from the external environment through the weather resistance of thermoplastic resin.

[0198] The design of the hood body 1-1 achieves lightness, high strength, high safety, good durability and corrosion resistance through the synergistic effect of the inner plate layer 1, the composite layer 2 and the outer surface layer 3. By rationally selecting materials and optimizing the structural design, it can meet the needs of different application scenarios and provide an ideal solution for the modern automotive and aerospace fields.

[0199] Furthermore, in the present invention, the hair cover body 1-1 is manufactured by a hot pressing process; hot pressing is to put a prepreg (such as a fiber-reinforced resin material) into a mold and perform molding under high temperature and high pressure conditions.

[0200] The above process has the following technical effects:

[0201] This process can ensure that the material fully flows and solidifies during the molding process, thereby obtaining high-quality composite products;

[0202] Fast curing and efficient production: By optimizing process parameters, hot pressing can achieve fast curing and shorten production cycle. For example, the application of fast curing molding materials can shorten the molding cycle from the traditional 10 minutes to 2 hours to 1-5 minutes.

[0203] Complex structure one-step forming: Hot pressing is suitable for manufacturing complex-shaped structural parts, which can achieve one-step forming and reduce the need for secondary processing.

[0204] A method for manufacturing the hair cover body 1-1, the manufacturing method comprising the following steps:

[0205] Step 1: Place the inner plate material for making the inner plate layer 1 into an inner plate mold, and hot press to obtain the desired shape. The hot pressing temperature is 130-300° C., and finally form the inner plate layer 1;

[0206] Step 2: Place the inner panel layer 1 of step 1 into another set of outer panel molds. The mold is required to be able to clamp the inner panel layer 1 and ensure the flatness of the contact surface between the inner panel layer 1 and the composite layer 2;

[0207] Step 3: Lay the prepreg fiberboard 21 on top of the inner board layer 1 of step 2 in the required molding mold, and finally place the outer surface layer 3; then obtain the desired structure of the hair cover body 1-1 through a hot pressing process.

[0208] Detailed steps of the production method:

[0209] Step 1: Forming of inner layer 1

[0210] Key points of the process:

[0211] The material for making the inner panel layer 1 (such as a single-layer resin panel) is placed into an inner panel mold.

[0212] The hot pressing temperature is controlled at 130-300°C, and the specific temperature depends on the type of resin used (thermoplastic or thermosetting).

[0213] Sufficient pressure needs to be applied during the hot pressing process to ensure the molding quality of the inner panel layer 1.

[0214] The hot pressing time is adjusted according to the characteristics of the material to ensure that the resin is fully cured or flow-formed.

[0215] The inner panel layer 1 is formed separately, and its shape and size accuracy can be precisely controlled.

[0216] High temperature hot pressing can ensure the fluidity and curing quality of the resin material and improve the strength and durability of the inner panel layer 1.

[0217] Step 2: Integration of inner panel layer 1 and outer panel mold

[0218] Place the inner panel layer 1 formed in step 1 into another set of outer panel molds.

[0219] The outer panel mold design requires that it can be clamped with the inner panel layer 1 to ensure the flatness of the contact surface between the inner panel layer 1 and the composite layer 2.

[0220] The clamping design of the mold can be mechanically fixed, vacuum adsorbed or other ways to ensure that the inner plate layer 1 will not shift in subsequent steps.

[0221] The clamping design ensures tight bonding between the inner panel layer 1 and the composite layer 2, avoiding gaps or unevenness between the layers.

[0222] The design of the outer panel mold can optimize the molding effect of the composite layer 2 and improve the flatness and appearance quality of the overall structure.

[0223] Step 3: Forming of composite layer 2 and outer layer 3

[0224] Key points of the process:

[0225] The prepreg fiberboard 21 is laid on top of the inner ply 1 that has been fixed in step 2 .

[0226] According to the design requirements, multiple layers of prepreg fiberboard 21 can be laid, and the fiber direction can be optimized according to the mechanical performance requirements (such as 0°, 90°, ±45°, etc.).

[0227] An outer skin layer 3 (eg, a thermoplastic resin layer 212 sheet) is placed over the prepreg fiber sheet 21 .

[0228] The entire structure is formed again by a hot pressing process, and the hot pressing temperature and pressure are adjusted according to the material properties to ensure sufficient curing and bonding of the composite layer 2 and the outer layer 3.

[0229] Based on the above design, the layer-by-layer laying and molding process can accurately control the thickness and performance of each layer.

[0230] The hot pressing process can ensure good bonding between the fiber layer 211 and the resin layer 212, thereby improving the overall performance of the composite material.

[0231] The thermoplastic resin of the outer layer 3 can be tightly combined with the composite layer 2 by heat pressing, while providing good appearance and weather resistance.

[0232] Advantages of production method:

[0233] Capable of precise control and high-quality molding; through the step-by-step molding process, the flow and solidification of the material can be precisely controlled in each step to ensure the dimensional accuracy and surface quality of the final product.

[0234] The step-by-step molding of the inner plate layer 1 and the composite layer 2 can avoid molding defects caused by differences in material properties and improve the reliability of the overall structure.

[0235] Multi-material integration and performance optimization: The inner panel layer 1, composite layer 2 and outer surface layer 3 can select appropriate materials (such as thermoplastic resin, thermosetting resin, fiber-reinforced material, etc.) according to different performance requirements; by optimizing the fiber arrangement and resin type, high strength, high modulus, light weight and good impact resistance can be achieved.

[0236] Efficient production and cost control: The hot pressing process is suitable for large-scale production, which can shorten the production cycle and improve production efficiency; the step-by-step molding process can adjust the process parameters of each step as needed to reduce material waste and defective rate.

[0237] specific:

[0238] The hair cover body 1-1 disclosed in the present invention mainly includes three parts: an inner plate layer 1, a composite layer 2, and an outer surface layer 3, wherein the inner plate layer 1 supports the appearance and maintains rigidity and installation, and metal nuts or bolts may be pre-embedded and installed according to the design; the composite layer 2 supports the surface and maintains dimensional stability, and is composed of a multi-layer prepreg fiberboard 21, and the prepreg fiberboard 21 further includes: a resin layer 212 and a fiber layer 211; the outer surface layer 3 is various resins that can be hot-pressed, and serves as an appearance surface to achieve a good appearance.

[0239] The inner panel layer 1 is composed of a single-layer resin panel, and the required inner panel structure design is formed by a hot pressing process; the thickness of the panel is about 0.1-3 mm, preferably 0.25 mm-1 mm; wherein the resin is mainly various thermoplastic or thermosetting resins: thermoplastic resins include but are not limited to polypropylene PP, polyamide PA, polycarbonate PC, etc. and their derivatives; thermosetting resins include epoxy resins, phenolic resins, polyimide resins, etc. and their derivatives; thermoplastic resins are preferred.

[0240] Among them, the derivatives are mainly fiber-reinforced resins, including short fiber (≤2mm) and / or long fiber (>2mm) reinforcement systems. Higher rigidity can be achieved by fiber arrangement and fiber addition.

[0241] The fiber materials include but are not limited to: cotton fiber, glass fiber, carbon fiber, hemp fiber, bamboo fiber, Kevlar fiber, etc.; glass fiber is preferred; the fiber source may also be recycled fiber of the above fibers.

[0242] There are no specific requirements for the fiber arrangement; if a high-depth structure is required, randomly arranged short fibers or recycled yarn fibers are preferred.

[0243] The composite layer 2 is composed of multiple layers of pre-impregnated fiber composite panels, which is a key component for regulating impact resistance and dimensional stability.

[0244] The composite layer 2 generally has 1 to 5 layers, preferably 2 to 3 layers.

[0245] The thickness of the composite layer 2 is 0.5 mm to 3 mm, preferably 1 mm to 1.5 mm.

[0246] The resin layer 212 can be various thermoplastic resins and thermosetting resins: thermoplastic resins include but are not limited to polypropylene PP, polyamide PA, polycarbonate PC, etc. and their derivatives; thermosetting resins include epoxy resins, phenolic resins, polyimide resins, etc. and their derivatives.

[0247] The fiber layer 211 is a single layer or multiple layers of layered fibers of various structural designs, each layer of layered fibers includes unidirectional tapes or woven fibers or other structurally designed fibers; the fiber layer 211 is generally 1-20 layers, preferably 1-5 layers;

[0248] The fiber material includes but is not limited to one or more of the following: cotton fiber, glass fiber, carbon fiber, hemp fiber, bamboo fiber, kevlar fiber, etc.; the fiber source may also be recycled fiber of the above fibers.

[0249] Each layer of fiber structure can be designed as various unidirectional tapes and / or woven textile structures and / or other structures and arrangements as required. The fiber arrangement direction and angle can be freely selected as required;

[0250] Preferably, the thickness of a single-layer unidirectional tape is 0.1-0.25 mm, preferably 0.2-0.25 mm;

[0251] Preferably, the thickness of the single-layer braided fiber is 0.05-0.5 mm, preferably 0.25-0.5 mm;

[0252] Preferably, other structures and arranged fibers are mainly arranged according to the product structure design requirements. For places with relatively high rigidity requirements, coarser fibers are used and the fiber arrangement density is increased and / or multi-layer arrangement and / or continuous fibers are used; for collision areas, finer fibers can be used, the fiber arrangement density is reduced, the weaving structure is reduced, loosely laid fibers are used... and other methods can be used to achieve pedestrian protection (as shown in the attached figure); the single layer thickness is 0.05-0.5mm, preferably 0.25-0.5mm.

[0253] Among them, the fibers can be in various structures such as monofilament, yarn, mixed yarn, twisted yarn, blended yarn, woven structure, etc.

[0254] The outer surface layer 3 is a common resin layer 212 plate, which is used to form a better appearance plane, mainly various thermoplastic resins: including but not limited to polypropylene PP, polyamide PA, polycarbonate PC and other mineral powder reinforced materials; the thickness of the plate is about 0.1-3mm, preferably 0.25mm-1mm.

[0255] The manufacturing process is:

[0256] 1) First, design the corresponding plate according to the inner plate shape structure, and place it in the corresponding inner plate hot pressing mold for forming;

[0257] 2) Then, the inner panel formed in 1) is placed into the outer panel mold, and the designed composite layer 2 multi-layer panel is laid on in sequence, and finally the outer layer 3 panel is laid on, and integrated into a whole through molding.

[0258] Preferably, the resins of the inner plate layer 1, the composite layer 2 and the outer surface layer 3 are selected to have good compatibility, which is also conducive to high-strength interface bonding of various materials.

[0259] Specific manufacturing method:

[0260] Put the inner plate material into the inner plate mold and hot press to obtain the desired shape, the hot pressing temperature is 130-300°C, preferably 150-230°C;

[0261] The inner plate flat plate of 1 is laid out in the required shaping mold, and the inner plate layer 1 of the required structure is obtained through a hot pressing process.

[0262] The hot pressing temperature is 130-300°C, preferably 150-230°C;

[0263] Put the inner plate layer 1 of 2 into another set of outer plate molds, which can clamp the inner plate and keep the surface of the inner plate layer 1 in contact with the outer plate in a relatively flat state;

[0264] Multiple single-layer fiberboards pre-impregnated with resin are evenly laid on the inner board layer 1 of step 3 in the required molding mold as required, and finally the outer surface layer panel is formed. Then, the inner and outer board structures of the required structure are obtained through hot pressing process. The hot pressing temperature is 130-300°C, preferably 150-230°C.

[0265] Specific cases;

[0266] Take the cabin cover made of PP-GF30 material (inner plate layer 1) (1 layer) + PP composite layer 2 (3 layers) + PP outer layer 3 (1 layer) as an example:

[0267] Put the PP-GF30 material into the inner plate molding mold, and obtain the inner plate layer 1 ( Fig.14 ), the inner plate thickness is 0.5mm, the inner plate hot pressing molding height is 1mm, and the hot pressing temperature is set at 190℃;

[0268] The inner panel of step 1 is placed in the outer panel molding mold, and three layers of PP composite fiber layers 211 (such as Fig.15 ), each layer thickness 0.5mm; finally, a 0.5mm appearance layer PP board is laid, and the hot pressing temperature is set at 170℃.

[0269] The average surface thickness of the final cabin cover structure is about 2.5mm, and the height of the hot-pressed rib is about 1mm. Fig.15 , Fig.16 , Fig.17 ).

[0270] Schematic diagram Fig.15 The overall structure is comprehensive, the joints have higher rigidity, the middle area has weaker performance, but it can support the panel shape and impact resistance.

[0271] How composite layer 2 performance changes: Assumptions Fig.15 The peripheral structure needs to be stronger and the middle structure weaker. Without changing the mold, the thickness of each layer can also be kept unchanged. Fig.19 , Fig. 20 , Fig.21 The three-layer structure shown is changed as follows.

[0272] 1. Bottom layer: compared to Fig.16 , the length and width of the single layer remain unchanged, and the structure is changed as Fig.19 As shown, the peripheral structure uses a thicker yarn weaving structure (to increase mechanical properties such as strength), and the middle uses a thinner yarn and a loose single-wire structure (to ensure excellent impact resistance).

[0273] 2. Middle layer: compared to Fig.17 , the length and width of the single layer remain unchanged, and the structure is changed as Fig. 20 As shown, the peripheral structure increases the use of thicker yarn weaving structure, and the middle uses a thinner yarn structure and reduces the number.

[0274] 3. Upper level: compared to Fig.18 , the length and width of the single layer remain unchanged, and the structure is changed as Fig.21 shown.

[0275] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A vehicle hood assembly, characterized in that: It includes a hood body; the hood body is connected to the vehicle body through a mounting mechanism; the mounting mechanism includes a plug-in mechanism and a fixing mechanism; The fixing mechanism comprises a plurality of fixing parts; each fixing part comprises a fixing hole arranged on the hair cover body; the plug-in mechanism comprises a plug-in protrusion arranged on the hair cover body; and the washing pot cover plate assembly is arranged on the hair cover body.

2. A vehicle bonnet assembly according to claim 1, characterized in that: The hair cover body comprises a hair cover outer plate and a hair cover inner plate; the hair cover outer plate is fixedly connected to the hair cover inner plate.

3. The vehicle bonnet assembly according to claim 1, characterized in that: The washing kettle cover assembly comprises a cover body and a cover base, wherein the cover body is connected to the cover body through the cover base; the cover body can rotate around the cover base; The cover body is provided with a washing pot groove body for arranging the washing pot cover plate assembly.

4. A vehicle bonnet assembly according to claim 3, characterized in that: The cover plate body comprises a cover plate outer plate and a cover plate inner plate; the cover plate outer plate is connected to the cover plate base through the cover plate inner plate.

5. The vehicle bonnet assembly according to claim 3, characterized in that: The cover plate base is connected to the hair cover body in a detachable connection manner.

6. A vehicle bonnet assembly according to any one of claims 1 or 4, characterized in that: The vehicle bonnet assembly also includes a bonnet decorative panel assembly; the bonnet body is provided with a decorative groove for arranging the bonnet decorative panel assembly; the bonnet decorative panel assembly includes a decorative panel body; the washing pot cover panel assembly and the bonnet decorative panel assembly are relatively spaced apart on the bonnet body; the decorative panel body includes a decorative panel outer panel and a decorative panel inner panel; the decorative panel outer panel is connected to the bonnet body through the decorative panel inner panel.

7. The vehicle bonnet assembly according to claim 5, characterized in that: The hair cover outer plate, the hair cover inner plate, the decorative plate outer plate and the decorative plate inner plate are all non-metal parts.

8. The vehicle bonnet assembly according to claim 1, characterized in that: The vehicle bonnet assembly also includes a bonnet decorative strip assembly; the bonnet decorative strip assembly includes a decorative strip body, an avoidance notch is provided on the decorative strip body, and a decorative strip blocking cover is provided on the avoidance notch.

9. The vehicle bonnet assembly according to claim 7, characterized in that: The hair cover decorative strip assembly is distributed on the side of the hair cover body away from the front windshield; the hair cover decorative strip assembly is clamped on the hair cover body.

10. An assembly method for a vehicle bonnet assembly according to any one of claims 1 to 9, characterized in that: The assembly method comprises the following steps: Step 1: Assemble the cover body, washing pot cover assembly and cover decorative plate assembly at multiple stations; Step 2: Install the hood body on the car body first; Step 3: Assemble the washing pot cover plate assembly and the hair cover decorative plate assembly onto the hair cover body; Step 4: Install the decorative strip body in the hood decorative strip assembly on the hood body; then connect it to the car body through screws through the decorative strip body and the hood body; then install the decorative strip plug cover on the decorative strip body; Step 5: After completing step 4, the assembly of a vehicle hood assembly on the vehicle body is completed. If you need to repeat the assembly of a new vehicle hood assembly, just repeat steps 1-4.

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