Front cover structure for a heavy truck

Abstract

The utility model discloses a front cover structure of heavy truck, include: front cover shell body, be used for connecting front cover to the front cover left hinge and front cover right hinge of car body, be used for locking front cover's front cover lock device and front cover lock mounting support and reinforcing framework structure, front cover shell body and reinforcing framework structure all adopt sheet molding compound and are made, and the inboard surface of front cover shell body is provided with reinforcing framework structure through the mode of combination of bonding and mechanical fixation, reinforcing framework structure is by front cover upper reinforcing framework, front cover left reinforcing framework, front cover right reinforcing framework and front cover lower reinforcing framework and is composed of square frame structure. The utility model makes front cover shell body and the reinforcing framework structure of setting in the front cover shell body all adopt sheet molding compound (SMC) and are made, and SMC material combines frame type reinforcing structure, has guaranteed overall structural strength, has also reduced overall weight.

Description

Technical Field

[0001] This utility model relates to the field of heavy truck component technology, specifically, a front cover structure for a heavy truck. Background Technology

[0002] The front grille of a conventional heavy-duty truck, being an area that needs to be frequently opened for maintenance and inspection, is typically equipped with a hinged structure to facilitate easy opening and closing. Therefore, achieving lightweight design while ensuring the structural strength of the front grille is particularly important.

[0003] Currently, there are several main technical solutions for openable truck front covers:

[0004] The first method uses lightweight plastic materials and designs a complex reinforcing rib structure on the back to compensate for the insufficient strength of the plastic itself. The advantage of this method is a significant reduction in weight, but the disadvantages are that it requires the design of a large number of hidden mounting points and interlocking reinforcement mechanisms, the installation process is complex, there is a risk of shrinkage marks on the appearance, and the cost is relatively high.

[0005] The second approach is to use a double-layer front cover structure, which improves overall strength by assembling the front and rear layers together. This method balances cost and lightweighting to some extent, but the double-layer structure occupies more space and places stricter requirements on the arrangement of surrounding components.

[0006] In summary, existing front cover structures struggle to achieve an ideal balance between lightweighting, strength, cost, and space utilization. Utility Model Content

[0007] To address the aforementioned technical problems, the present invention aims to provide a front cover structure for heavy-duty trucks. By using sheet molding compound to make both the front cover shell and the reinforcing frame structure, the front cover achieves a balance of lightweight, high strength, low cost, and good space adaptability.

[0008] The present invention solves the above problems through the following technical solution:

[0009] A front cover structure for a heavy-duty truck includes: a front cover shell body, a front cover left hinge and a front cover right hinge for connecting the front cover to the vehicle body, a front cover locking device and a front cover lock mounting bracket for locking the front cover, and a reinforcing frame structure; both the front cover shell body and the reinforcing frame structure are made of sheet molding compound, and the reinforcing frame structure is provided on the inner side of the front cover shell body by a combination of adhesive bonding and mechanical fixing; the reinforcing frame structure is a square frame structure composed of an upper reinforcing frame, a left reinforcing frame, a right reinforcing frame, and a lower reinforcing frame.

[0010] As a further improvement, the front cover shell body and the reinforcing frame structure are bonded and fixed together with polyurethane adhesive.

[0011] As a further improvement, a primer adhesive is applied between the bonding surfaces of the front cover housing and the reinforcing skeleton structure.

[0012] As a further improvement, the front cover structure also includes: a gas strut mounting bracket and a gas strut assembly, wherein the gas strut assembly is connected to the inner side of the front cover shell body via the gas strut mounting bracket.

[0013] As a further improvement, front cover limiting blocks are provided on the lower left and right sides of the inner side of the front cover shell body to control the gap and surface difference between the front cover and the car door when the front cover is closed.

[0014] As a further improvement, the upper and lower reinforcing frames of the front cover are connected to the front cover housing body by screws or bolts at their left and right ends; the upper and lower ends of the left and right reinforcing frames of the front cover overlap the upper and lower reinforcing frames of the front cover, respectively, and their middle parts are connected to the front cover housing body by screws or bolts to achieve mechanical fixation.

[0015] As a further improvement, the front cover shell body is provided with a number of positioning and mounting holes relative to the reinforcing frame structure. The positioning component passes through the positioning holes on the reinforcing frame structure and matches with the positioning and mounting holes to realize the positioning and installation of the reinforcing frame structure.

[0016] As a further improvement, the left hinge and right hinge of the front cover are respectively located on the left and right sides of the reinforced frame structure, with one end connected to the outer shell of the front cover and the other end connected to the body sheet metal of the vehicle body.

[0017] As a further improvement, the front hood lock mounting bracket is mounted on the vehicle body relative to the front hood lower reinforcing frame for mounting the front hood lock device.

[0018] As a further improvement, an "L"-shaped gas strut mounting bracket is provided on each side of the inner center of the front cover shell body. The other end of the "L"-shaped gas strut mounting bracket is connected to one end of the gas strut assembly, and the other end of the gas strut assembly is connected to the vehicle body.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] (1) The present invention uses sheet molding compound (SMC) to make both the front cover shell body and the reinforcing skeleton structure set in the front cover shell body. The SMC material combined with the frame-type reinforcing structure ensures the overall structural strength and reduces the overall weight.

[0021] (2) The split frame of this utility model enables the miniaturization of the mold, reducing mold cost and development expenses. The process of combining bonding and mechanical fixing not only ensures the connection strength, but also facilitates production and quality control; each component is installed on a stable foundation composed of the shell and the frame, ensuring the reliable realization of each function and long-term durability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front cover structure of a heavy-duty truck according to the present invention;

[0023] Figure 2 This is an exploded view of the front cover structure of a heavy-duty truck according to the present invention;

[0024] Figure 3 This is a schematic diagram of the reinforced frame structure and the front cover shell body of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation of the gas strut mounting bracket and gas strut assembly of this utility model;

[0026] Figure 5 This is a schematic diagram showing the location of the positioning and mounting holes on the front cover shell body of this utility model;

[0027] Figure 6 This is a schematic diagram of the installation of the left hinge of the front cover of this utility model.

[0028] Reference numerals: 1. Right hinge of front hood; 2. Upper reinforcing frame of front hood; 21. Fixing groove; 3. Gas strut mounting bracket; 4. Gas strut assembly; 5. Front hood outer shell body; 51. Positioning mounting hole; 6. Left hinge of front hood; 7. Left reinforcing frame of front hood; 8. Front hood limiting block; 9. Front hood locking device; 10. Front hood lock mounting bracket; 11. Lower reinforcing frame of front hood; 12. Right reinforcing frame of front hood. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example:

[0031] See attached document Figure 1-6 A front cover structure for a heavy-duty truck includes: a front cover shell body 5, a front cover left hinge 6 and a front cover right hinge 1 for connecting the front cover to the vehicle body, a front cover locking device 9 and a front cover lock mounting bracket 10 for locking the front cover, a reinforcing frame structure, a gas strut mounting bracket 3, a gas strut assembly 4, and a front cover locking device 9 and a front cover lock mounting bracket 10.

[0032] The front cover housing 5 is the main structure of the front cover, providing the appearance and main mounting structure. The right hinge 1 and left hinge 6 of the front cover are connecting parts between the front cover and the body sheet metal, used to fix the front cover to the body sheet metal, and serve as moving connecting parts during the opening and closing of the front cover. The gas strut mounting bracket 3 provides a connection and fixing structure between the gas strut assembly 4 and the front cover housing housing. The gas strut assembly 4 supports the opening and closing motion mechanism of the front cover assembly. The front cover locking device 9 is used to ensure that the front cover is locked tightly when closed, preventing shaking during vehicle movement and thus avoiding abnormal noises. The front cover locking mounting bracket 10 provides a mounting base to the front cover locking device 9 and is an associated structure for connecting it to the vehicle body.

[0033] Both the front cover shell body 5 and the reinforcing frame structure are made of sheet molding compound (SMC). The inner side of the front cover shell body 5 is provided with a reinforcing frame structure by a combination of adhesive bonding and mechanical fixation. The reinforcing frame structure is square in shape and consists of the upper reinforcing frame 2, the left reinforcing frame 7, the right reinforcing frame 12, and the lower reinforcing frame 11 of the front cover, forming a square frame structure.

[0034] Specifically, the left hinge 6 and the right hinge 1 of the front cover are respectively located on the left and right sides of the reinforced frame structure. One end is connected to the outer shell body 5 of the front cover, and the other end is connected to the body sheet metal of the vehicle body. They are used to connect the front cover to the vehicle body and form the rotation axis for opening and closing the front cover.

[0035] The front cover lock mounting bracket 10 is mounted on the vehicle body relative to the front cover lower reinforcing frame 11 and is used to install the front cover lock device 9, thereby locking the front cover.

[0036] The gas strut assembly 4 is connected to the inner side of the front cover housing 5 via a gas strut mounting bracket 3. Preferably, an "L"-shaped gas strut mounting bracket 3 is provided on each side of the center of the inner side of the front cover housing 5. The other end of the "L"-shaped gas strut mounting bracket 3 is connected to the piston rod end of the gas strut assembly 4, and the cylinder end of the gas strut assembly 4 is connected to another fixed point on the vehicle body.

[0037] Specifically, the front hood lock mounting bracket 10 is a separate component, fixedly mounted on the vehicle body structure. The front hood lock device 9 is mounted on the front hood lock mounting bracket 10. When the front hood is closed, the locking tongue installed in the area of ​​the lower reinforcing frame 11 of the front hood engages with the front hood lock device 9 on the side of the vehicle body to achieve locking. The front hood limiting block 8 is installed on the lower left and right sides of the inner side of the front hood outer shell body 5. When closed, it contacts the vehicle body before the lock, precisely limiting the final position of the front hood and ensuring gaps and surface differences.

[0038] In an optional embodiment, a primer is applied between the bonding surfaces of the front cover housing 5 and the reinforcing frame structure. Then, the front cover housing 5 and the reinforcing frame structure are bonded and fixed together using polyurethane adhesive.

[0039] The lower left and right sides of the inner side of the front cover body 5 are provided with front cover limiting blocks 8, which are used to control the gap and surface difference between the front cover and the door when the front cover is closed.

[0040] The upper reinforcing frame 2 and the lower reinforcing frame 11 of the front cover are connected to the front cover housing body 5 at their left and right ends by screws or bolts, respectively. The left reinforcing frame 7 and the right reinforcing frame 12 of the front cover overlap the upper reinforcing frame 2 and the lower reinforcing frame 11 of the front cover at their upper and lower ends, respectively, and are connected to the front cover housing body 5 at their middle parts by screws or bolts to achieve mechanical fixation. The front cover housing body 5 has several positioning and mounting holes 51 relative to the reinforcing frame structure. Positioning components pass through the positioning holes on the reinforcing frame structure and mate with the positioning and mounting holes 51 to achieve positioning and installation of the reinforcing frame structure.

[0041] Preferably, the front cover upper reinforcing frame 2 is provided with a fixing groove 21 corresponding to the positioning mounting hole 51. The positioning hole is set in the fixing groove 21 to ensure the connection stability of the positioning component and to ensure that the positioning component does not affect the overall rear profile of the front cover after installation.

[0042] During assembly, a primer for adhesion is first applied to the mating surfaces of the reinforcing frame structure and the front cover shell body 5. After drying, a single-component polyurethane adhesive is applied. Simultaneously, precise positioning is achieved using positioning pins, initial tightening bolts, or screws, utilizing the corresponding positioning holes 51 on the front cover shell body 5 and the corresponding positioning holes on the reinforcing frame structure. Then, each reinforcing frame structure is pressed firmly onto the front cover shell body 5. After the adhesive has initially cured, final mechanical fastening is performed: the left and right ends of the upper front cover reinforcing frame 2 and the lower front cover reinforcing frame 11 on the front cover shell body 5 are connected to the front cover shell body 5 using screws or bolts; the upper and lower ends of the left front cover reinforcing frame 7 and the right front cover reinforcing frame 12 overlap the upper and lower front cover reinforcing frames 2 and 11 respectively, with their middle sections also connected to the front cover shell body 5 using screws or bolts. This combination of adhesive bonding and mechanical fastening forms an extremely robust integrated structure.

[0043] This front cover structure adds a front cover upper reinforcing frame 2, a front cover left reinforcing frame 7, a front cover lower reinforcing frame 11, and a front cover right reinforcing frame 12 to the existing front cover shell body 5. This improves the structural strength of the front cover assembly while simultaneously achieving a lightweight goal, resulting in significantly lower development costs compared to conventional market solutions for the same weight. It is also lighter than conventional market solutions for the same development cost.

[0044] This structure departs from the traditional double-layer large mold processing method. Through an orderly arrangement of the back structure during mold production, the required molding die size can be greatly reduced, saving mold materials and development costs. Compared to the traditional SMC structure, this invention can effectively reduce the thickness of the front cover shell body by 40%. Although the strength of the front cover body is significantly reduced, the strength is ensured to be no less than that of the traditional structure by connecting it with the back reinforcing frame.

[0045] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A front cover structure for a heavy-duty truck, characterized in that, include: The front cover housing body (5), the front cover left hinge (6) and the front cover right hinge (1) for connecting the front cover to the vehicle body, the front cover locking device (9) and the front cover lock mounting bracket (10) for locking the front cover, and the reinforcing frame structure. The front cover shell body (5) and the reinforcing frame structure are both made of sheet molding compound. The inner side of the front cover shell body (5) is provided with a reinforcing frame structure by a combination of adhesive bonding and mechanical fixation. The reinforced frame structure consists of a square frame structure composed of the front cover upper reinforced frame (2), the front cover left reinforced frame (7), the front cover right reinforced frame (12), and the front cover lower reinforced frame (11).

2. The front cover structure of a heavy-duty truck according to claim 1, characterized in that, The front cover shell body (5) and the reinforcing frame structure are bonded and fixed together by polyurethane adhesive.

3. The front cover structure of a heavy-duty truck according to claim 2, characterized in that, A primer adhesive is applied between the bonding surfaces of the front cover shell body (5) and the reinforcing skeleton structure.

4. The front cover structure for a heavy-duty truck according to claim 1, characterized in that, The lower inner side of the front cover shell body (5) is provided with front cover limiting blocks (8) for controlling the gap and surface difference between the front cover and the car door when the front cover is closed.

5. The front cover structure for a heavy-duty truck according to claim 1, characterized in that, The upper reinforcing frame (2) and the lower reinforcing frame (11) of the front cover are connected to the outer shell body (5) of the front cover by screws or bolts at their left and right ends respectively. The upper and lower ends of the left reinforcing frame (7) and the right reinforcing frame (12) of the front cover are respectively attached to the upper reinforcing frame (2) and the lower reinforcing frame (11) of the front cover, and the middle part is connected to the outer shell body (5) of the front cover by screws or bolts to achieve mechanical fixation.

6. The front cover structure of a heavy-duty truck according to claim 1, characterized in that, The front cover shell body (5) has several positioning and mounting holes (51) relative to the reinforcing frame structure. The positioning component passes through the positioning holes on the reinforcing frame structure and matches with the positioning and mounting holes (51) to realize the positioning and installation of the reinforcing frame structure.

7. The front cover structure of a heavy-duty truck according to claim 1, characterized in that, The front cover left hinge (6) and front cover right hinge (1) are respectively located on the left and right sides of the reinforced frame structure, with one end connected to the front cover outer shell body (5) and the other end connected to the body sheet metal of the vehicle body.

8. The front cover structure of a heavy-duty truck according to claim 1, characterized in that, The front cover lock mounting bracket (10) is disposed on the vehicle body relative to the front cover lower reinforcing frame (11) and is used to install the front cover lock device (9) so as to provide a mounting base for the front cover lock device (9) through the front cover lock mounting bracket (10) so that the front cover lock device (9) can be connected to the vehicle body.

9. A front cover structure for a heavy-duty truck according to any one of claims 1-8, characterized in that, The front cover structure also includes: a gas strut mounting bracket (3) and a gas strut assembly (4), wherein the gas strut assembly (4) is connected to the inner side of the front cover shell body (5) through the gas strut mounting bracket (3).

10. The front cover structure of a heavy-duty truck according to claim 9, characterized in that, The front cover shell body (5) has an "L"-shaped gas strut mounting bracket (3) on each side of the inner middle part. The other end of the "L"-shaped gas strut mounting bracket (3) is connected to one end of the gas strut assembly (4), and the other end of the gas strut assembly (4) is connected to the vehicle body.

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