Novel mould pressing wheel cover structure

Abstract

The invention discloses a novel mould pressing wheel cover structure, which belongs to the field of machining and comprises a wheel cover body, and the wheel cover body is composed of an arc-shaped cover plate, a side plate I and a side plate II; the first side plate is connected with the surface of the first arc-shaped cover plate and arranged along the arc-shaped outline of the wheel cover body. The second side plate is connected with the surface, away from the first side plate, of the arc-shaped cover plate and arranged along the arc-shaped contour of the wheel cover body. One end of the arc-shaped cover plate is fixedly connected with a mounting plate, and a plurality of rectangular convex blocks are uniformly arranged on the outer wall of the arc-shaped cover plate; the composite material containing PET and PP is processed into the wheel cover body through the mold pressing technology, the rectangular protruding blocks are evenly arranged on the wheel cover body, the rectangular protruding blocks and the wheel cover body are integrally formed, traditional welding sound-absorbing cotton is replaced, vibration energy transmission is reduced, the NVH performance requirement is met, the sound-absorbing cotton welding procedure is omitted, the production process is simplified, and the production cost is reduced. And the product weight and cost are reduced.

Description

Technical Field

[0001] This application belongs to the field of machining, and specifically relates to a novel molded wheel cover structure. Background Technology

[0002] Wheel covers are mainly used in automobiles for the decoration of the vehicle's exterior, to enhance the overall appearance and improve the vehicle's NVH performance, thereby improving the actual driving experience for customers.

[0003] In the existing technology, the processing methods of wheel covers are mainly divided into three categories: injection molding, vacuum forming, and compression molding. Among them, injection molded wheel covers and vacuum formed wheel covers have limited noise reduction capabilities and require welding 20mm of sound-absorbing cotton to absorb vibration energy in order to meet NVH performance requirements. Although compression molded wheel covers have increased rigidity and reduced resonance, they still require welding 10mm of sound-absorbing cotton to enhance NVH performance. Because these three types of wheel covers all require welding sound-absorbing cotton of different thicknesses, the production process of wheel covers is increased, and the weight and cost of the products also increase accordingly.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a novel molded wheel cover structure that offers the advantages of ensuring the wheel cover's NVH performance while simplifying the production process and reducing product weight and cost.

[0006] A novel molded wheel cover structure includes a wheel cover body, which is composed of an arc-shaped cover plate, a side plate one, and a side plate two. The side plate is connected to the surface of the arc-shaped cover plate and is set along the arc-shaped contour of the arc-shaped cover plate; The second side plate is connected to the surface of the arc-shaped cover away from the first side plate, and is set along the arc-shaped contour of the arc-shaped cover; One end of the arc-shaped cover plate is fixedly connected to a mounting plate, and the outer wall of the arc-shaped cover plate is evenly provided with a plurality of rectangular protrusions; The wheel cover body has a notch on its surface, which extends from the surface of the wheel cover body to one surface of the side plate, and a flange is provided along the outline of the notch.

[0007] Furthermore, the outer wall of the arc-shaped cover plate near the mounting plate is provided with a protrusion, and the protrusion is provided with a through hole. The inner wall of the arc-shaped cover plate away from the mounting plate is provided with a circular groove, and the circular groove is provided with a through hole.

[0008] Furthermore, the first side plate is perpendicular to the arc-shaped cover plate, and the second side plate is parallel to the arc-shaped cover plate.

[0009] Furthermore, a positioning hole is provided on the side plate; The side plate is also provided with a second protrusion and a third protrusion, which are symmetrically distributed around the flange. Both the second and third protrusions are provided with through holes.

[0010] Furthermore, the second side plate is provided with positioning hole 2, positioning hole 3 and positioning hole 4. Positioning hole 2 is located between positioning hole 3 and positioning hole 4. Positioning hole 3 is located at the bottom of the side plate 2 near the mounting plate. Positioning hole 4 is located at the top of the side plate 2.

[0011] Furthermore, the width of the second side plate gradually decreases from the top to the bottom of both sides, and the connection between the second side plate and the arc-shaped cover plate is provided with a concave part, which matches the positioning hole three.

[0012] Furthermore, a pair of ear plates are fixed to the side of the mounting plate away from the arc-shaped cover plate, and the ear plates are provided with through holes.

[0013] Furthermore, the flanged portion is generally inverted U-shaped.

[0014] Furthermore, the thickness of the arc-shaped cover plate, side plate one, side plate two, flange, and mounting plate is consistent.

[0015] Furthermore, the wheel cover body is made of a composite material containing PET and PP.

[0016] Compared with the prior art, this application has the following advantages: 1. The present invention provides a novel molded wheel cover structure, which uses a molding process to process a composite material containing PET and PP into a wheel cover body, and uniformly sets rectangular protrusions on the wheel cover body, so that the rectangular protrusions are integrally formed with the wheel cover body, replacing the traditional welded sound-absorbing cotton, reducing vibration energy transmission, meeting NVH performance requirements, simplifying the production process and reducing product weight and cost by eliminating the sound-absorbing cotton welding process.

[0017] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A first schematic diagram of the wheel cover body of the present invention is shown; Figure 2 A second schematic diagram of the wheel cover body of the present invention is shown; Figure 3 A cross-sectional view of the wheel cover body of the present invention is shown.

[0020] Legend: 1. Wheel cover body; 11. Arc-shaped cover plate; 111. Protrusion 1; 112. Circular groove; 12. Side plate 1; 121. Positioning hole 1; 122. Protrusion 2; 123. Protrusion 3; 13. Side plate 2; 131. Positioning hole 2; 132. Positioning hole 3; 133. Positioning hole 4; 134. Inner recess; 14. Rectangular protrusion; 15. Flanged edge; 16. Mounting plate; 161. Ear plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] like Figure 1-3 As shown, the present invention provides a novel molded wheel cover structure, including a wheel cover body 1, which is composed of an arc-shaped cover plate 11, a first side plate 12, and a second side plate 13; the first side plate 12 is connected to a surface of the arc-shaped cover plate 11 and is arranged along the arc-shaped contour of the arc-shaped cover plate 11; the second side plate 13 is connected to the surface of the arc-shaped cover plate 11 away from the first side plate 12 and is arranged along the arc-shaped contour of the arc-shaped cover plate 11; a mounting plate 16 is fixedly connected to one end of the arc-shaped cover plate 11, and a plurality of rectangular protrusions 14 are uniformly provided on the outer wall of the arc-shaped cover plate 11; a notch is opened on the surface of the wheel cover body 1, the notch extends from the surface of the wheel cover body 1 to the surface of the first side plate 12, and a flange portion 15 is provided along the contour of the notch.

[0023] This application takes into account that most existing wheel cover products are manufactured using three methods: injection molding, vacuum forming, and compression molding. Injection-molded and vacuum-formed wheel covers, where the top of the outline is made of sound-absorbing cotton, have limited inherent noise reduction capabilities and require the welding of 20mm thick sound-absorbing cotton to absorb vibration energy in order to meet NVH performance requirements for noise, vibration, and acoustic roughness. While compression-molded wheel covers, with sound-absorbing cotton on top, offer increased rigidity and reduced resonance, they still require the welding of 10mm thick sound-absorbing cotton to enhance NVH performance. Because all three types of wheel covers require welding sound-absorbing cotton of varying thicknesses, the production process increases, leading to higher product weight and cost. To address this issue, this application uses a molding process to process a composite material containing PET (polyethylene terephthalate) and PP (polypropylene) into a wheel cover body 1. Rectangular protrusions 14 are evenly arranged on the wheel cover body 1, so that the rectangular protrusions 14 are integrally formed with the wheel cover body 1, replacing the traditional welded sound-absorbing cotton, reducing vibration energy transmission, and meeting NVH performance requirements. By eliminating the sound-absorbing cotton welding process, the production process is simplified, and the product weight and cost are reduced. By combining composite materials with the molding process, both the rigidity and NVH performance of the wheel cover body 1 are taken into account, solving the industry problem that traditional injection-molded and vacuum-formed wheel covers have insufficient noise reduction capabilities, and that molded wheel covers still require the welding of sound-absorbing cotton. It should be noted that the wheel cover body 1 is made of a composite material containing PET and PP, which is made of polypropylene and PET needle punched together. It retains the rigidity and heat resistance of PET, and improves the overall performance of the material by leveraging the toughness of PP. This satisfies the dual requirements of strength and noise reduction of the wheel cover body 1 in the molding process. This application achieves noise reduction by means of the structural design of the rectangular protrusion 14, reducing the number of processes and costs from the source of the process, while ensuring the NVH performance of the wheel cover body 1.

[0024] like Figure 1-2 As shown, the outer wall of the arc-shaped cover plate 11 near the mounting plate 16 is provided with a protrusion 111, and the protrusion 111 is provided with a through hole. The inner wall of the arc-shaped cover plate 11 away from the mounting plate 16 is provided with a circular groove 112, and the circular groove 112 is provided with a through hole. The first side plate 12 is perpendicular to the arc-shaped cover plate 11, and the second side plate 13 is parallel to the arc-shaped cover plate 11; The side plate 12 is provided with a positioning hole 121; The side plate 12 is also provided with a second protrusion 122 and a third protrusion 123. The second protrusion 122 and the third protrusion 123 are symmetrically distributed with the flange 15 as the center. Both the second protrusion 122 and the third protrusion 123 are provided with through holes. The side plate 2 13 is provided with positioning hole 2 131, positioning hole 3 132 and positioning hole 4 133. Positioning hole 2 131 is located between positioning hole 3 132 and positioning hole 4 133. Positioning hole 3 132 is located at the bottom of the side plate 2 13 near the mounting plate 16. Positioning hole 4 133 is located at the top of the side plate 2 13. The width of the second side plate 13 gradually decreases from the top to the bottom of both sides. The connection between the second side plate 13 and the arc-shaped cover plate 11 is provided with a recessed part 134, which matches the positioning hole 132. It should be further explained that, as the matching and installation part of the wheel cover body 1 and the vehicle body wheel cover, the side plate 12, due to the limitation of the mating parts, needs to use automotive-specific snap-fit ​​technology to achieve installation. The protrusion 111 and its through hole can serve as installation positioning points, and together with other parts, achieve precise installation of the arc-shaped cover plate 11 and the vehicle body, improving assembly efficiency and reliability. The circular groove 112 and its through hole can serve as internal structural connection points, such as auxiliary fixing with the vehicle body frame, enhancing the overall rigidity of the wheel cover body 1. The positioning hole 121 is used for precise docking with the vehicle body wheel cover, ensuring the stable installation position of the side plate 12 and the vehicle body. The protrusions 122 and 123... 3. Regarding the symmetrical flange design, the through-hole design of both can achieve symmetrical force distribution, avoiding deformation caused by uneven force distribution after the side plate 12 is installed, thus ensuring the structural stability of the wheel cover body 1 during long-term use. The distribution of positioning holes 131, 132, and 133 enables multi-point positioning, enhancing the installation firmness of the side plate 13 and the vehicle body. The width design of the side plate 13 optimizes space utilization, avoids interference between the wheel cover body 1 and the vehicle body, and enhances the streamlined appearance. At the same time, the corresponding matching of the concave part 134 and the positioning hole 132 further improves the connection accuracy between the side plate 13 and the arc-shaped cover plate 11, reducing the transition gap.

[0025] like Figure 1-2 As shown, a pair of ear plates 161 are fixed to the side of the mounting plate 16 away from the arc-shaped cover plate 11, and the ear plates 161 are provided with through holes. During operation, the mounting plate 16 is matched with the front bumper of the vehicle body by a pair of ear plates 161 provided on the mounting plate 16. This allows the operator to connect the mounting plate 16 to the front bumper using existing installation methods, which use screws and springs. During installation, the springs are first fixed to the front bumper, and then the mounting plate 16 is fixed to the front bumper with screws.

[0026] like Figure 1 As shown, the flanged portion 15 is generally inverted U-shaped; It should also be noted that the flange 15 is located on the arc-shaped cover plate 11 and the side plate 12, and the included angle between the flange 15 and the arc-shaped cover plate 11 and the side plate 12 is 90 degrees. This application forms a right-angle connection between the inverted U-shaped flange 15 and the arc-shaped cover plate 11 and the side plate 12, which can not only serve as an installation guide mechanism to achieve precise alignment between the wheel cover body 1 and the vehicle body, but also adapt to the installation space of the wheel cover of the vehicle body to avoid interference between the wheel cover body 1 and the vehicle body.

[0027] like Figure 3 As shown, the arc-shaped cover plate 11, side plate one 12, side plate two 13, flange part 15 and mounting plate 16 have the same thickness, and all are 2.2mm. The thickness of the rectangular protrusion 14 is 6 mm; During operation, by selecting the thickness of the arc-shaped cover plate 11, side plate one 12, side plate two 13, flange part 15 and mounting plate 16 to 2.2mm during molding, the installation reliability of the wheel cover body 1 on the vehicle wheel cover is ensured. In addition, based on the arrangement of surrounding parts and the space of the vehicle body, by selecting the thickness of the rectangular protrusion 14 to 6mm to replace the traditional sound-absorbing cotton, the NVH performance of the wheel cover body 1 is improved without reducing the mechanical performance of the wheel cover body 1.

[0028] The wheel cover body 1 is made of a composite material containing PET and PP.

[0029] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A novel molded wheel cover structure, characterized in that: It includes a wheel cover body (1), which is composed of an arc-shaped cover plate (11), a side plate one (12) and a side plate two (13); The side plate (12) is connected to a surface of the arc-shaped cover plate (11) and is arranged along the arc-shaped outline of the arc-shaped cover plate (11); The second side plate (13) is connected to the surface of the arc-shaped cover plate (11) away from the first side plate (12) and is arranged along the arc-shaped contour of the arc-shaped cover plate (11); One end of the arc-shaped cover plate (11) is fixedly connected to a mounting plate (16), and the outer wall of the arc-shaped cover plate (11) is uniformly provided with a plurality of rectangular protrusions (14). The wheel cover body (1) has a notch on its surface, which extends from the surface of the wheel cover body (1) to the surface of the side plate (12), and a flange (15) is provided along the outline of the notch.

2. The novel molded wheel cover structure according to claim 1, characterized in that: The arc-shaped cover plate (11) has a protrusion (111) on the outer wall of the side close to the mounting plate (16), and the protrusion (111) has a through hole. The arc-shaped cover plate (11) has a circular groove (112) on the inner wall of the side away from the mounting plate (16), and the circular groove (112) has a through hole.

3. The novel molded wheel cover structure according to claim 1, characterized in that: The first side plate (12) is perpendicular to the arc-shaped cover plate (11), and the second side plate (13) is parallel to the arc-shaped cover plate (11).

4. The novel molded wheel cover structure according to claim 3, characterized in that: The side plate (12) is provided with a positioning hole (121). The side plate (12) is also provided with a second protrusion (122) and a third protrusion (123). The second protrusion (122) and the third protrusion (123) are symmetrically distributed with the flange (15) as the center. Both the second protrusion (122) and the third protrusion (123) are provided with through holes.

5. The novel molded wheel cover structure according to claim 1, characterized in that: The second side plate (13) is provided with a second positioning hole (131), a third positioning hole (132) and a fourth positioning hole (133). The second positioning hole (131) is located between the third positioning hole (132) and the fourth positioning hole (133). The third positioning hole (132) is located at the bottom of the side plate (13) near the mounting plate (16). The fourth positioning hole (133) is located at the top of the second side plate (13).

6. The novel molded wheel cover structure according to claim 5, characterized in that: The width of the second side plate (13) gradually decreases from the top to the bottom of both sides. The connection between the second side plate (13) and the arc-shaped cover plate (11) is provided with a concave part (134), which matches the positioning hole (132).

7. The novel molded wheel cover structure according to claim 2, characterized in that: A pair of ear plates (161) are fixed to the side of the mounting plate (16) away from the arc-shaped cover plate (11), and the ear plates (161) are provided with through holes.

8. The novel molded wheel cover structure according to claim 7, characterized in that: The flange (15) is in the shape of an inverted U.

9. A novel molded wheel cover structure according to claim 8, characterized in that: The thickness of the arc-shaped cover (11), side plate one (12), side plate two (13), flange (15) and mounting plate (16) is the same.

10. A novel molded wheel cover structure according to any one of claims 1-9, characterized in that, The wheel cover body (1) is made of a composite material containing PET and PP.

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