Plastic shell, injection mold and electronic equipment
By adding reinforcing ribs to the side of the support column, the weld lines are transferred to the reinforcing ribs, which solves the problem of low strength of the support column and improves the stability of the support column and the service life of the plastic shell.
Patent Information
- Application Number
- CN202520008217.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-02
AI Technical Summary
In existing injection molding processes, the support columns of plastic shells are prone to strength reduction due to weld lines, resulting in unstable fasteners or even loosening, and the support columns are also prone to breakage.
Reinforcing ribs are installed on the side of the support column to transfer the weld lines to the reinforcing ribs, thereby increasing the strength of the support column. The reinforcing ribs also share the internal stress, enhancing the structural stability of the support column.
It effectively improves the strength and stability of the support column, extends the service life of the plastic shell, and avoids the support column breakage and fastener loosening.
Smart Images
Figure CN223694119U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection molding technical field, concretely relates to a plastic shell, injection mold and electronic equipment. BACKGROUND
[0002] Injection molding is a method of producing industrial products. The surface of plastic products usually forms a weld mark, which is caused by the incomplete fusion of two or more streams at the interface during the injection molding process. It is a kind of surface defect. The current injection molding process cannot avoid the formation of weld marks.
[0003] Some plastic shells need to be embedded with fixing members (such as bolt columns, nuts, etc.). In order to support these fixing members, support columns are formed on the plastic shell, and inner holes for mounting the fixing members are formed in the support columns. The wall of the support column cannot be designed to be too thick, because the wall of the support column is too thick, which can cause shrinkage and other defects, resulting in reduced strength. Therefore, the wall of the support column is usually thin. However, due to process problems, weld marks will be formed on the support column, which will reduce the strength of the support column and cause the position where the weld mark is located to easily break during the use of the plastic shell, resulting in unstable fixation of the fixing member and even loosening of the fixing member from the inner hole of the support column. SUMMARY
[0004] The utility model aims at overcoming the shortcomings and deficiencies in the prior art, and provides a plastic shell, an injection mold and an electronic device.
[0005] One embodiment of the utility model provides a plastic shell, which comprises a body.
[0006] An outward protruding support column is formed on the body, an installation hole for mounting a fixing member is formed in the support column, and a plurality of reinforcing ribs are arranged on the side of the support column, wherein a weld mark is formed on the reinforcing rib.
[0007] In some optional embodiments, the reinforcing rib extends from the root of the support column to the edge of the end of the support column.
[0008] In some optional embodiments, the weld mark extends from the root of the reinforcing rib to the end of the reinforcing rib.
[0009] In some optional embodiments, the weld mark is formed on the side of the reinforcing rib away from the support column.
[0010] In some optional embodiments, a plurality of reinforcing ribs are arranged on the side of the support column, and the weld mark is formed on at least one of the reinforcing ribs.
[0011] In some optional embodiments, the weld mark is formed on each of the reinforcing ribs.
[0012] In some optional embodiments, the side of the pillar is provided with five reinforcing ribs, and the interval angle of adjacent reinforcing ribs in the circumferential direction around the pillar is 72°.
[0013] In some optional embodiments, the body is formed with a plurality of pillars.
[0014] An embodiment of the utility model provides a kind of injection mold, it is applied to the injection molding of the plastic shell as described above.
[0015] An embodiment of the utility model provides a kind of electronic equipment, comprising: the plastic shell as described above.
[0016] Compared with the prior art, in the plastic shell of the utility model, at least part of the weld mark that cannot be avoided in the injection molding process is transferred from the pillar to the reinforcing rib, so as to facilitate to improve the strength of the pillar, avoid the case that the pillar is easily broken, effectively improve the service life of the plastic shell;And the structure and layout form of reinforcing rib can effectively improve the strength of the pillar, further improve the strength of the pillar.
[0017] In order to more clearly understand the utility model, the specific embodiments of the present application will be described below in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the structure schematic view of plastic shell of an embodiment of the utility model;
[0019] Figure 2 It is the structure schematic view of plastic shell and fixing part of an embodiment of the utility model;
[0020] Figure 3 It is the structure schematic view of one side of plastic shell of an embodiment of the utility model.
[0021] MARKED DESCRIPTION:
[0022] 10, body;11, pillar;111, mounting hole;112, reinforcing rib;1121, weld mark;20, fixing part. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. In the description of the present application, unless otherwise specified, "a plurality of" means two or more than two, and "several" means one or more than one. In addition, unless otherwise specified, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
[0024] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0025] In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0026] In the description of the present application, the description of the terms "one embodiment", "some optional embodiments" or "some optional examples" means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0027] In the prior art, some plastic shells need to be pre-buried with fixing members (such as bolt columns, nuts, etc.), and in order to support these fixing members, support columns are also formed on the plastic shells, and inner holes for mounting the fixing members are formed in the support columns. The walls of the support columns are usually not designed to be thick, because the walls of the support columns are prone to shrinkage and other defects when they are too thick, which reduces the strength. Therefore, the walls of the support columns are usually thin. However, due to process problems, the support columns will form welding marks, which will reduce the strength of the support columns. After the fixing members are pre-buried into the inner holes of the support columns, the positions of the welding marks are prone to breakage during the use of the plastic shells, which causes the fixing members to be unstable and even loose from the inner holes of the support columns.
[0028] In the present application, at least part of the welding marks on the support columns are introduced onto the reinforcing ribs, so that the strength of the support columns is increased and is not prone to breakage. The reinforcing ribs also further improve the strength of the support columns, so that the overall strength of the support columns is greatly improved, and the service life of the plastic shells is prolonged.
[0029] It should be noted that the welding mark is a linear mark on the surface of a plastic product. It is caused by the incomplete fusion of the flow material at the convergence interface during the injection molding process, and the flow material cannot be fused into one body. The welding mark affects the appearance quality and mechanical properties of the plastic product and is difficult to eliminate.
[0030] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a plastic shell, which comprises a body 10.
[0031] The body 10 is provided with a protruding support column 11, and the support column 11 is provided with a mounting hole 111 for mounting a fixing member 20. The side of the support column 11 is provided with a plurality of reinforcing ribs 112, and the reinforcing ribs 112 are provided with welding marks 1121. During the injection molding process, at least part of the welding marks 1121 are formed on the reinforcing ribs 112, so as to facilitate the absence of welding marks 1121 on the support column 11 or to reduce the welding marks 1121 on the support column 11, effectively improving the strength of the support column 11. Moreover, the reinforcing ribs 112 themselves can also improve the strength of the support column 11, so that the strength of the support column 11 is greatly improved, and the installation requirements of different fixing members 20 are met.
[0032] The fixing member 20 can be assembled into the mounting hole 111. The fixing member 20 is usually made of metal material, and thus it is difficult to be integrally formed with the plastic shell. Therefore, the fixing member 20 needs to be embedded into the mounting hole 111 after the plastic shell is completed by injection molding. In the embodiment, the fixing member 20 is a metal column with an internally threaded hole. After the fixing member 20 is assembled into the mounting hole 111, the fixing member 20 can be assembled with a threaded member such as a screw or a bolt. In this way, the plastic shell can be conveniently connected with the threaded member. Of course, the fixing member 20 can also have other suitable structures, such as a metal column with a clamping hole, and the like.
[0033] For some fixing members 20 with knurled patterns on the outer side, the fixing members 20 need to increase the tightness with the inner wall of the mounting hole 111 through the knurled patterns. However, this will also cause a large internal stress on the support column 11, which will easily cause the support column 11 to be broken at the position of the welding mark 1121. In addition, the plastic shell is prone to embrittlement under low temperature conditions. The internal stress caused by the fixing member 20 on the support column 11 is prone to cause the support column 11 to be broken. The utility model transfers the welding mark 1121 to the reinforcing rib 112, which not only improves the strength of the support column 11 itself and meets the requirement of bearing internal stress, but also transmits the internal stress to the reinforcing rib 112, thereby reducing the load of the support column 11 and improving the structural stability of the support column 11, effectively solving the problem that the support column 11 is easily broken.
[0034] Please refer to Figure 3 In some optional embodiments, the reinforcing rib 112 extends from the root of the support column 11 to the edge of the end of the support column 11, thereby facilitating the expansion of the supporting range of the reinforcing rib 112 on the support column 11 and improving the supporting strength of the reinforcing rib 112 on the support column 11. In addition, the welding mark 1121 usually extends in the direction from the root of the support column 11 to the end. Therefore, it is also convenient to introduce the same welding mark 1121 to the reinforcing rib 112, thereby effectively reducing or avoiding the formation of the welding mark 1121 on the support column 11. Of course, in some special cases, the structure layout of the body 10 limits the extension of the reinforcing rib 112 to the end of the support column 11. For example, in an optional embodiment, the end of the reinforcing rib 112 can only reach the middle position of the support column 11 from the root to the end. In this case, part of the same welding mark 1121 can be formed on the reinforcing rib 112, and the other part can be formed on the support column 11. Compared with the prior art in which the welding mark 1121 is completely formed on the support column 11, introducing part of the welding mark 1121 to the reinforcing rib 112 can also effectively improve the strength of the support column 11.
[0035] Please refer to Figure 3In some alternative embodiments, the welding line 1121 extends from the root of the reinforcing rib 112 to the end of the reinforcing rib 112, so as to effectively utilize the length of the reinforcing rib 112 in the direction from the root to the end of the strut 11, and to introduce the welding line 1121 to the reinforcing rib 112 as much as possible, so as to improve the strength of the strut 11. In the present embodiment, the reinforcing rib 112 extends from the root of the strut 11 to the end edge of the strut 11, so that the same welding line 1121 can be formed on the reinforcing rib 112, and the strength of the strut 11 is effectively improved.
[0036] Referring to Figure 1 In some alternative embodiments, the welding line 1121 is formed on the side of the reinforcing rib 112 away from the strut 11, so that the length of the reinforcing rib 112 in the radial direction of the strut 11 can be utilized to make the welding line 1121 further away from the strut 11, further improve the strength of the strut 11, and optimize the mechanical properties of the strut 11. Of course, in other alternative embodiments, based on the specific molding mode of the mold, the welding line 1121 can also be formed on the side of the reinforcing rib 112 adjacent to the strut 11 or other suitable positions on the reinforcing rib 112, so as to meet the production needs, and thus is not limited to the side of the reinforcing rib 112 away from the strut 11.
[0037] Referring to Figure 1 In some alternative embodiments, the side of the strut 11 is provided with a plurality of reinforcing ribs 112, and the plurality of reinforcing ribs 112 are arranged around the strut 11. At least one of the reinforcing ribs 112 is provided with the welding line 1121. When no reinforcing rib 112 is provided, one or more welding lines 1121 can be formed on the strut 11, and by transferring at least one welding line 1121 to the reinforcing rib 112, the strength of the strut 11 is improved.
[0038] It should be noted that because the shape and structure of the body 10 at different positions can be different, the shape and structure of the different reinforcing ribs 112 can also be changed according to the shape of the body 10, so that the reinforcing rib 112 can stably support the strut 11.
[0039] Referring to Figure 1 In some alternative embodiments, the welding line 1121 is formed on each reinforcing rib 112, so as to reasonably distribute the formation position of the welding line 1121, and to avoid the formation of the welding line 1121 on the strut 11.
[0040] The specific number of the reinforcing ribs 112 can be selected according to actual needs, for example, in some optional embodiments, the side of the support 11 is provided with 5 reinforcing ribs 112, and the interval angle of the adjacent reinforcing ribs 112 in the circumferential direction around the support 11 is 72°, and the 5 reinforcing ribs 112 arranged uniformly around the support 11 can stably support each orientation of the support 11, greatly improving the strength of the support 11, so that the fixing member 20 is stably installed. Of course, the reinforcing ribs 112 can also be selected in other appropriate numbers, so as to meet the increasing strength requirement of the support 11 and meet the structural layout requirement.
[0041] Please refer to Figure 1 In some optional embodiments, a plurality of supports 11 are formed on the body 10, and a proper number of supports 11 are arranged according to actual needs, so as to meet the structural requirement, and the specific number of the supports 11 can be selected according to actual needs, so as to meet the layout requirement of the fixing member 20. In the embodiment, the side of each support 11 is arranged with 5 reinforcing ribs 112. In addition, in the embodiment, the reinforcing ribs 112 on the sides of different supports 11 can be separated from each other, and of course, according to the structural design requirement, the reinforcing ribs 112 on the sides of different supports 11 can be connected to each other, for example, when two supports 11 are too close, the two adjacent supports 11 can be connected to the same reinforcing rib 112, or in order to improve the structural strength of the shell, a part of the reinforcing ribs 112 of the plurality of supports 11 are connected integrally.
[0042] The above-mentioned plastic shell can be applied to an electronic device, which comprises the above-mentioned plastic shell.
[0043] An embodiment of the utility model provides injection mold, be applied to the injection molding of the above-mentioned plastic shell, and product cavity is formed in injection mold, by the layout of the confluence position of multiple material flows at the position corresponding to the reinforcing rib 112 in product cavity, so that the weld mark 1121 is formed on the reinforcing rib 112.
[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A plastic housing, characterized by, Comprising: a body; a protruding pillar is formed on the body, a mounting hole for fitting a fixing member is formed in the pillar, and a plurality of reinforcing ribs are arranged on the side of the pillar, and a welding mark is formed on the reinforcing ribs.
2. A plastic housing according to claim 1, wherein: The reinforcing ribs extend from the root of the pillar to the edge of the end of the pillar.
3. A plastic housing according to claim 2, wherein: The welding mark extends from the root of the reinforcing rib to the end of the reinforcing rib.
4. The plastic housing of claim 1, wherein: The welding mark is formed on the side of the reinforcing rib away from the pillar.
5. A plastic housing according to any one of claims 1 to 4, characterized in that: The side of the pillar is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged around the pillar, and the welding mark is formed on at least one of the reinforcing ribs.
6. A plastic housing according to claim 5, wherein: The welding mark is formed on each of the reinforcing ribs.
7. A plastic housing according to claim 5, wherein: The side of the pillar is provided with five reinforcing ribs, and the interval angle of the adjacent reinforcing ribs in the circumferential direction around the pillar is 72°.
8. A plastic housing according to any one of claims 1 to 4, wherein: A plurality of pillars are formed on the body.
9. An injection mold for injection molding the plastic shell according to any one of claims 1 to 8.
10. An electronic device, comprising: Comprising: a plastic shell according to any one of claims 1 to 8.