Metal die casting shell
By optimizing the wall thickness ratio of the main body and reinforcement rib roots of the metal die casting shell, the problem of shrinkage marks affecting the appearance of the spray paint in the prior art is solved, and the mechanical properties and appearance are taken into account.
Patent Information
- Application Number
- CN202422295462.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing metal die casting products have uneven wall thickness designs in the reinforcement structure, resulting in high mechanical and mechanical properties requirements and obvious shrinkage marks, affecting the appearance and visual comfort of the paint.
The wall thickness of the main body and the reinforcement rib roots of the metal die casting shell are different. The second wall thickness is smaller than the first wall thickness, and is optimized to be 2/3~3/4 or 0.5~0.85 times, ensuring that the mechanical properties of the reinforcement ribs remain unchanged and avoid shrinkage.
Without changing the structure, the shell surface shrinkage problem is solved, and the appearance is not shrunk, meeting customer assembly and visual appearance requirements.
Smart Images
Figure CN223246873U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of paint-spraying metal die-casting parts, in particular to a metal die-casting shell which can effectively meet the non-shrinkage effect of appearance. Background Art
[0002] With the development of new electronic technologies, the quality and assembly requirements for electronic central control screens are becoming increasingly stringent, and product structures are becoming increasingly complex. In particular, in-vehicle central control screens are becoming increasingly large to meet the demands for sensory and visual comfort. At the same time, the design and production of decorative metal components such as screen brackets are also becoming more demanding to meet these visual requirements.
[0003] Currently, lightweight magnesium alloy die-cast screen brackets are commonly used for in-vehicle central control screens. When these screen brackets are installed in the vehicle, they require not only high mechanical performance but also visual comfort. However, existing metal die-cast products have uneven wall thicknesses in the rib structure and the main wall thickness of the product. While this ensures mechanical performance, it also produces noticeable shrinkage marks on the surface, creating a visually uncomfortable impression.
[0004] See Figure 9-10 As shown in FIG. 1 , a conventional metal die-casting product has a main wall thickness designed to be 1.6 mm, while a wall thickness of a root portion 121 of a reinforcing rib 120′ is designed to be 2.52 mm. The wall thickness of the reinforcing rib 120′ is greater than the main wall thickness of the product. The thinner the main wall thickness is, the faster it cools and solidifies. As a result, the filling and pressure transmission at the thick portion of the reinforcing rib 120′ are insufficient, causing the back of the reinforcing rib 120′ to easily shrink, resulting in obvious shrinkage lines on the front of the product, as shown in FIG. Figure 10 shown.
[0005] Therefore, it is necessary to provide a metal die-casting housing that can reduce shrinkage, solve the problem of poor paint appearance, and meet customer assembly and visual appearance requirements while ensuring mechanical performance requirements, so as to solve the above problems. Utility Model Content
[0006] The purpose of the utility model is to provide a metal die-casting housing that can reduce shrinkage, solve the problem of poor paint appearance, and meet customer assembly and visual appearance requirements while ensuring mechanical performance requirements.
[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is: to provide a metal die-casting shell, which includes a main body and a plurality of reinforcing ribs, wherein the main body has a first wall thickness, and each of the reinforcing ribs is respectively protruded on the back side of the main body, and each of the reinforcing ribs includes a root connected to the main body, and the root has a second wall thickness, and the second wall thickness is less than the first wall thickness.
[0008] Preferably, the second wall thickness is between 2 / 3 and 3 / 4 of the first wall thickness.
[0009] Preferably, the second wall thickness is greater than or equal to 0.5 times the first wall thickness and less than or equal to 0.85 times the first wall thickness, and the first wall thickness is less than or equal to 4 mm.
[0010] Preferably, the first wall thickness is 2.1 mm, and the second wall thickness is 1.68 mm, which conforms to the common rib wall thickness design concept of die-casting parts, and can make the surface of the shell free of shrinkage marks, and has the effect of no shrinkage mark on the appearance.
[0011] Preferably, the main body includes a bottom wall and a first side wall protruding from the bottom wall, the first side wall protrudes toward the front of the main body, each reinforcing rib is protruded from at least the first side wall, and the position where the reinforcing rib is connected to the first side wall is the root.
[0012] Preferably, the first side wall is inclined and protrudes compared to the bottom wall, and the reinforcing rib is connected to the first side wall and extends to the bottom wall.
[0013] Preferably, the connection position between the first side wall and the bottom wall is an arc-shaped transition.
[0014] Preferably, the main body further includes a second side wall, the second side wall is connected to an end of the first side wall away from the bottom wall, and the second side wall is spaced apart from the first side wall, and each of the reinforcing ribs is also connected to the second side wall.
[0015] Preferably, the second side wall is connected to the end of the first side wall away from the bottom wall through the top wall, each of the reinforcing ribs is also connected to the top wall, and the root also includes the position where the reinforcing rib is connected to the top wall.
[0016] Preferably, the second side wall is a vertical planar structure.
[0017] Preferably, the first side wall and the second side wall are both annular structures, and the second side wall is located inside the first side wall, and the reinforcing ribs are radially arranged along the second side wall.
[0018] Compared with the prior art, the metal die-cast shell of the present invention includes a main body and a plurality of reinforcing ribs protruding from the back of the main body, each of the reinforcing ribs includes a root connected to the main body, and the main body has a first wall thickness, and the root has a second wall thickness, and the second wall thickness is smaller than the first wall thickness. Therefore, the first wall thickness of the main body and the second wall thickness of the root of the reinforcing rib are reasonably designed, thereby effectively solving the problem of shell surface shrinkage without changing the structure and ensuring the original mechanical performance requirements of the reinforcing rib, so that the appearance of the metal die-cast shell does not have shrinkage marks, solves the problem of poor paint appearance, and meets customer assembly and visual appearance requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a front structural schematic diagram of the metal die-casting shell of the present utility model.
[0020] Figure 2 yes Figure 1 Schematic diagram of the back structure of the metal die-casting shell.
[0021] Figure 3 yes Figure 2 Top view of .
[0022] Figure 4 It is along Figure 3 Sectional view along line AA.
[0023] Figure 5 yes Figure 4 A partial enlarged schematic diagram.
[0024] Figure 6 It is along Figure 3 Cross-sectional view along line BB.
[0025] Figure 7 It is along Figure 3 Cross-sectional view along the CC line.
[0026] Figure 8 This is a product rendering of the metal die-casting shell of the present utility model.
[0027] Figure 9 It is a partial cross-sectional view of a metal die-casting housing in the prior art.
[0028] Figure 10 yes Figure 9 Product rendering of the metal die-casting housing. DETAILED DESCRIPTION
[0029] The embodiments of the present invention will now be described with reference to the accompanying drawings, in which similar element numbers represent similar elements. It should be noted that the orientation descriptions involved in the present invention, such as the orientations or positional relationships indicated by up, down, left, right, front, and back, are all based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present application or / and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. The first, second, etc. described are only used to distinguish technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0030] Combine Figure 1-Figure 7 As shown, the metal die-casting housing 100 provided by the present invention mainly refers to the metal die-casting front shell of the vehicle-mounted rotating screen. Of course, it is not limited to the housing used for the vehicle-mounted central control screen. The metal die-casting housing 100 can of course be the housing used for any other electronic product.
[0031] Continue to combine Figure 1-Figure 7 As shown, in the present invention, the metal die casting housing 100 includes a main body 110 and a plurality of reinforcing ribs 120. The main body 110 has a first wall thickness H, such as Figure 5 Each reinforcing rib 120 is respectively protruded on the back of the main body 110, and each reinforcing rib 120 includes a root portion 121 connected to the main body 110 and an end portion away from the main body 110, and the root portion 121 has a second wall thickness h, as shown. Figure 5 Furthermore, the second wall thickness h is less than the first wall thickness H. Therefore, without changing the structure of the reinforcing rib 120, the mechanical properties of the reinforcing rib 120 are ensured to meet the requirements, and the surface shrinkage problem of the metal die-cast housing 100 is effectively solved, so that the appearance of the metal die-cast housing 100 does not have shrinkage marks.
[0032] In the present invention, the thickness of the end portion of the reinforcing rib 120 is not limited, and the thickness of the end portion of the reinforcing rib 120 is generally less than or equal to the second wall thickness h of the root portion 121. Figure 4-Figure 7 As shown, in one embodiment, the thickness of the end portion of the reinforcing rib 120 is slightly smaller than the second wall thickness h of the root portion 121 .
[0033] Continue to combine Figure 4-Figure 7As shown, in one embodiment of the present invention, the second wall thickness h is between 2 / 3 and 3 / 4 of the first wall thickness H. Thus, the structure of the reinforcing rib 120 can be maintained, such as by reducing its height, ensuring that the reinforcing rib 120 meets mechanical performance requirements. At the same time, the shrinkage problem at the location where the reinforcing rib 120 is provided on the main body 110 is overcome, resulting in no shrinkage marks on the surface of the main body 110. In other words, no shrinkage marks are produced on the front of the main body 110, and the main body 110 has an appearance that does not have shrinkage marks.
[0034] It is understandable that the first wall thickness H and the second wall thickness h are not limited to the settings in the above embodiment.
[0035] Recombination Figure 4-Figure 7 As shown, in another embodiment of the present invention, the first wall thickness H is relatively small. Generally, the first wall thickness H is less than or equal to 4 mm. Furthermore, the second wall thickness h is within the range of 0.5H ≤ h ≤ 0.85H, meaning that the second wall thickness h is greater than or equal to 0.5 times the first wall thickness H and less than or equal to 0.85 times the first wall thickness H. This arrangement also ensures that the ribs 120 meet mechanical performance requirements without changing their structure. Furthermore, the surface of the main body 110 is free of shrinkage marks, resulting in a front-facing appearance that is non-shrinkage-reflective and meets visual requirements.
[0036] Recombination Figure 1-Figure 7 As shown, in the present invention, when forming the metal die-cast shell 100, the thickness relationship between the first wall thickness H and the second wall thickness h can be achieved by thickening the first wall thickness H at the position where the reinforcing rib 120 is set on the main body 110, or / and by thinning the second wall thickness h at the root 121 of the reinforcing rib 120.
[0037] Continue to combine Figure 1-Figure 7 As shown, in one embodiment of the present invention, the main body 110 includes a bottom wall 114 and a first side wall 111 protruding from the bottom wall 114, and the first side wall 111 protrudes toward the front of the main body 110. Figure 1 Each reinforcing rib 120 is at least protruded from the first side wall 111, and the root portion 121 at least includes the position where the reinforcing rib 120 is connected to the first side wall 111, as shown in FIG. Figure 3 、 Figure 6 Furthermore, the second wall thickness h of the root portion 121 and the first wall thickness H of the first side wall 111 are set in any of the above-mentioned ways, thereby ensuring that there is no shrinkage mark on the front of the first side wall 111, and thus ensuring that the overall appearance of the main body 110 has no shrinkage mark, thus meeting the customer's assembly and visual appearance requirements.
[0038] Combine Figure 1-3 、 Figure 6 As shown, in this embodiment, the first side wall 111 is inclined and protrudes relative to the bottom wall 114, and the connection between the first side wall 111 and the bottom wall 114 forms an arc-shaped transition. The reinforcing rib 120 is connected to the first side wall 111 and extends to the bottom wall 114. The root portion 121 can also include the location where the reinforcing rib 120 connects to the bottom wall 114.
[0039] More specifically, there are four first side walls 111, and a through hole is formed between the four first side walls 111. The four first side walls 111 are arranged to be converged in the direction away from the bottom wall 114. In other words, the four first side walls 111 protrude upward from the front of the main body 110 and are in a converged shape. The inclination angle between each first side wall 111 and the bottom wall 114 can be the same or different, such as Figure 1 Furthermore, a plurality of reinforcing ribs 120 are provided on the back of each first side wall 111. The plurality of reinforcing ribs 120 provided on each first side wall 111 are arranged at intervals, and the reinforcing ribs 120 provided on the four first side walls 111 are arranged radially around the through hole, as shown in FIG. Figure 2-3 shown.
[0040] like Figure 3 As shown, the length of each reinforcing rib 120 extending onto the bottom wall 114 is not specifically limited. In other words, the length of the projection of each reinforcing rib 120 onto the main body 110 is not specifically limited and can be flexibly set according to specific product requirements. Furthermore, the location where the reinforcing rib 120 connects to the bottom wall 114 can also be set according to the thickness of the aforementioned root portion 121. Of course, the portion of the reinforcing rib 120 provided on the bottom wall 114 can also have the same thickness.
[0041] Recombination Figure 1-Figure 2 As shown, in one embodiment of the present invention, the main body 110 also includes a second side wall 112, which is connected to the end of the first side wall 111 away from the bottom wall 114, and the second side wall 112 is spaced apart from the first side wall 111, and each reinforcing rib 120 is also connected to the second side wall 112, specifically, the surface of each reinforcing rib 120 is perpendicular to the second side wall 112.
[0042] Combine Figure 3-Figure 7 As shown, in this embodiment, the second side wall 112 is a vertical plane structure, and there are four second side walls 112, and the four second side walls 112 are sequentially connected to the rectangular through hole. The four second side walls 112 correspond to the four first side walls 111, and each second side wall 112 is connected to the corresponding first side wall 111 through a top wall 113, that is, the top wall 113 is connected to the end of the first side wall 111 away from the bottom wall 114, as shown in FIG. Figure 1 、 Figure 3-5 Therefore, the second side wall 112 is located inside the first side wall 111, and a recess is formed between the second side wall 112, the top wall 113, and the first side wall 111. Each of the reinforcing ribs 120 is located in the recess and is also connected to the top wall 113. At the same time, each of the reinforcing ribs 120 is arranged radially along the second side wall 112. That is, the surface where each of the reinforcing ribs 120 is located is perpendicular to the four second side walls 112, as shown in FIG. Figure 2-3 shown.
[0043] Combine Figure 1-5 、 Figure 7 As shown, in this embodiment, the root portion 121 further includes the location where the reinforcing rib 120 connects to the top wall 113. In other words, the location where the reinforcing rib 120 connects to the top wall 113 and the first side wall 111 is the root portion 121, and the second wall thickness h of the root portion 121 and the first wall thickness H of the top wall 113 and the first side wall 111 are configured in any of the above-mentioned ways. Whether the location where the reinforcing rib 120 connects to the bottom wall 114 is the root portion 121 is not specifically limited.
[0044] It should be noted that a bottom plate may also be provided at the bottom of each second side wall 112, such as Figure 1 As shown, in order to facilitate the installation of the product, this can be flexibly set according to specific needs and is not specifically limited here.
[0045] Continue to combine Figure 1-Figure 7 As shown, in a specific embodiment of the present invention, the main body 110 includes a bottom wall 114, a first side wall 111, a second side wall 112 and a top wall 113. The bottom wall 114 is a plate-shaped structure. The first side wall 111 is formed by the front side of the bottom wall 114 protruding upward. The second side wall 112 is arranged inside the first side wall 111 and is slightly spaced from the first side wall 111. The tops of the second side wall 112 and the first side wall 111 are connected by a top wall 113 with a smaller width, and the top wall 113 is arranged horizontally. Figure 1 As shown. A recessed portion is maintained between the second side wall 112, the top wall 113, and the first side wall 111. The other structures of the main body 110 are as described above and will not be repeated. Figure 2-3 As shown, the reinforcing ribs 120 are all arranged in the recessed portion and connected to the second side wall 112, the first side wall 111 and the top wall 113. The surfaces of each reinforcing rib 120 are respectively perpendicular to the second side wall 112. Therefore, the reinforcing ribs 120 connected to the four second side walls 112 are radially arranged along the second side wall 112.
[0046] In this specific embodiment, the position where the reinforcing rib 120 is connected to at least the top wall 113 and the first side wall 111 is the root. In addition, at least the first wall thickness H of the top wall 113 and the first side wall 111 is designed to be 2.1mm, and the second wall thickness h of the root is designed to be 1.68mm, which is in line with the common rib wall thickness design concept of die castings. Figure 8 As shown, the metal die-casting shell 100 produced according to this embodiment has no shrinkage marks on the front of its main body 110, that is, the surface of the shell 100 has no shrinkage marks and no shrinkage lines on the appearance, and has an effect of no shrinkage print on the appearance.
[0047] Combine Figure 9-10 As shown, in comparison, in an existing setting, the first wall thickness H' is designed to be 1.6 mm, and the second wall thickness h' of the root 121' of the reinforcing rib 120' is designed to be 2.52 mm. The thickness of the root 121' of the reinforcing rib 120' is greater than the main wall thickness of the product. The structural design is unreasonable, and the main wall thickness is thin, so it cools and solidifies quickly, and the filling of the thick wall position of the reinforcing rib 120' and the pressure transmission and shrinkage compensation are insufficient, resulting in the back of the reinforcing rib 120' being prone to shrinkage, thereby making the shrinkage lines on the front of the shell 100' obvious, and the product shrinkage mark is concave, which cannot meet the customer's assembly and visual appearance requirements.
[0048] In summary, the metal die-cast housing 100 of the present invention includes a main body 110 and a plurality of reinforcing ribs 120 protruding from the back of the main body 110. Each reinforcing rib 120 includes a root portion 121 connected to the main body 110. The main body 110 has a first wall thickness H, and the root portion 121 has a second wall thickness h, which is less than the first wall thickness H. Therefore, the first wall thickness H of the main body 110 and the second wall thickness h of the root portion 121 of the reinforcing rib 120 are both reasonably designed. Without changing the structure and ensuring the original mechanical performance requirements of the reinforcing rib 120, the surface shrinkage problem of the housing 100 is effectively solved, the appearance of the metal die-cast housing 100 is free of shrinkage, the problem of poor paint appearance is solved, and the customer's assembly and visual appearance requirements are met.
[0049] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.
Claims
1. A metal die casting housing, characterized in that: include: a body having a first wall thickness; A plurality of reinforcing ribs are provided, each of the reinforcing ribs is protruded from the back of the main body, each of the reinforcing ribs includes a root portion connected to the main body, the root portion has a second wall thickness, and the second wall thickness is less than the first wall thickness.
2. The metal die casting housing according to claim 1, wherein: The second wall thickness is between 2 / 3 and 3 / 4 of the first wall thickness.
3. The metal die casting housing according to claim 1, wherein: The second wall thickness is greater than or equal to 0.5 times the first wall thickness and less than or equal to 0.85 times the first wall thickness, and the first wall thickness is less than or equal to 4 mm.
4. The metal die casting housing according to any one of claims 1 to 3, characterized in that: The main body includes a bottom wall and a first side wall protruding from the bottom wall, the first side wall protrudes toward the front of the main body, each reinforcing rib is protruding from at least the first side wall, and the position where the reinforcing rib is connected to the first side wall is the root.
5. The metal die casting housing according to claim 4, wherein: The first side wall is inclined and protrudes compared to the bottom wall, and the reinforcing rib is connected to the first side wall and extends to the bottom wall.
6. The metal die casting housing according to claim 4, wherein: The connection position between the first side wall and the bottom wall is in an arc-shaped transition.
7. The metal die casting housing according to claim 4, wherein: The main body further includes a second side wall, which is connected to an end of the first side wall away from the bottom wall, and the second side wall is spaced apart from the first side wall, and each of the reinforcing ribs is also connected to the second side wall.
8. The metal die casting housing according to claim 7, wherein: The second side wall is connected to one end of the first side wall away from the bottom wall through a top wall, each of the reinforcing ribs is also connected to the top wall, and the root portion also includes a position where the reinforcing rib is connected to the top wall.
9. The metal die casting housing according to claim 7, wherein: The second side wall is a vertical plane structure.
10. The metal die casting housing according to claim 7, wherein: The first side wall and the second side wall are both annular structures, and the second side wall is located inside the first side wall. The reinforcing ribs are radially arranged along the second side wall.