Multi-purpose controller inner shielding case installation structure

Abstract

The utility model discloses a multipurpose controller inner shielding case installation structure. The multipurpose controller inner shielding case installation structure comprises a plastic rear cover, a shielding case and a PCBA which are assembled in sequence. The shielding cover comprises a heat dissipation area used for covering high-frequency and high-power electronic components on the PCBA and an expansion area used for covering other electronic components on the PCBA. The surface of the inner side of the heat dissipation area is coated with heat conduction grease, and the heat dissipation area is lower than the extension area. And a plurality of heat dissipation holes are formed in the expansion area. On the basis that the overall weight is reduced, heat can be effectively dissipated, and materials and cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to controller shielding technical field, especially a multipurpose controller inner shield cover mounting structure. BACKGROUND

[0002] In prior art, the controller for automobile is generally made of metal shell for upper and lower cover of PCBA to meet the functions of heat dissipation and shielding. Although the scheme is simple, it can achieve the existing purpose, but the weight of the physical object is large, and the cost is relatively expensive. There is also a rear cover made of plastic to reduce the weight, and a shield cover is added between the PCBA and the rear cover. The shield cover is connected with the PCBA by clamping or welding, but it only plays a shielding role and cannot effectively dissipate heat. If the heat is high, copper sheets are usually used to increase the cost and weight. At the same time, the PCBA contains high-frequency high-power electronic components that need to be shielded and heat-dissipated, and other electronic components that do not need to be shielded and heat-dissipated. The traditional shield cover is covered entirely and dissipates heat through a large area of copper sheet, which wastes materials and increases cost. SUMMARY

[0003] The utility model solves the technical problem of overcoming the deficiency of prior art and provides a multipurpose controller inner shield cover mounting structure which can effectively dissipate heat and save materials and cost on the basis of reducing the overall weight.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0005] A multipurpose controller inner shield cover mounting structure includes a plastic rear cover, a shield cover and a PCBA assembled in sequence.

[0006] The shield cover includes a heat dissipation area for covering high-frequency high-power electronic components on the PCBA, and an extension area for covering other electronic components on the PCBA.

[0007] The inner surface of the heat dissipation area is coated with a heat-conducting grease, and the height of the heat dissipation area is lower than that of the extension area.

[0008] A plurality of heat dissipation holes are formed in the extension area.

[0009] Further, a plurality of elastic buckles are arranged at the edge of the shield cover, a plurality of fixing areas corresponding to the elastic buckles are formed on the surface of the PCBA, and the shield cover is connected with the fixing areas of the PCBA by the elastic buckles.

[0010] Further, at least one first limiting table and at least three second limiting tables are arranged inside the plastic rear cover, and rivet columns are arranged on the first limiting table and the second limiting table.

[0011] The heat dissipation area of the shielding cover is provided with a rivet light hole for positioning the first limiting table upper rivet column, and the extension area of the shielding cover is provided with a rivet light hole for positioning the second limiting table upper rivet column.

[0012] The plastic rear cover is riveted with the rivet light hole of the shielding cover, and the first limiting table end surface is limited and abutted with the heat dissipation area, and the second limiting table end surface is limited and abutted with the extension area.

[0013] Further, the height of the first limiting table is higher than that of the second limiting table.

[0014] Further, the extension area of the shielding cover is further provided with an avoiding hole.

[0015] Further, the inner side surface of the heat dissipation area of the shielding cover is provided with a groove for coating heat-conducting grease.

[0016] Further, the groove depth is 0.1mm.

[0017] Further, the bottom of the PCBA is further provided with a die-cast aluminum heat sink.

[0018] Further, the material of the shielding cover is stainless steel.

[0019] The above technical scheme has the following beneficial effects:

[0020] 1. The shielding cover is designed as a structure combined with a heat dissipation area and an extension area, and the inner side of the heat dissipation area is coated with heat-conducting grease, so that heat is effectively transferred through the heat-conducting grease of the heat dissipation area, which is beneficial to rapid heat dissipation, and the heat-conducting grease is closely attached to the high-frequency and high-power electronic components on the PCBA, so that targeted rapid heat dissipation can be achieved; meanwhile, the extension area is used to increase the heat dissipation area and expand the heat dissipation space, so as to assist the heat dissipation area to dissipate heat efficiently, and a plurality of heat dissipation holes are further provided on the extension area, so that not only the heat dissipation is accelerated, but also the overall weight is reduced. On the basis of ensuring effective heat dissipation, targeted heat dissipation and shielding are achieved, and materials and costs are saved, and the overall weight is reduced.

[0021] 2. The shielding cover is designed as a structure combined with a heat dissipation area and an extension area, and the heat dissipation area can be closely attached to the high-frequency and high-power electronic components on the PCBA to conduct heat and dissipate heat, and the extension area maintains a spacing space with other electronic components on the PCBA, so that the heat dissipation performance is improved through the large area and large space of the extension area, and effective and rapid heat dissipation is ensured.

[0022] 3. The plastic rear cover and the shielding cover are riveted through the rivet, and are limited and abutted through the first limiting table and the second limiting table, so that a certain spacing space is left between the plastic rear cover and the shielding cover on the basis of ensuring stable fixation, which is more conducive to the overall heat dissipation performance and effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structure exploded schematic view of the embodiment of the utility model;

[0024] Figure 2 is an inner side structure schematic view of the shielding cover of the embodiment of the utility model;

[0025] Figure 3 is a partial assembly overhead schematic view of the embodiment of the utility model;

[0026] Figure 4 is Figure 3 is a partial assembly cross section schematic view of the section A-A;

[0027] Figure 5 is an inner side structure schematic view of the plastic rear cover of the embodiment of the utility model;

[0028] Wherein, 1. plastic rear cover;11. first limit platform;12. second limit platform;100. rivet column;2. shielding cover;21. heat dissipation area;210. heat conduction grease;22. extension area;200. rivet light hole;201. elastic buckle;202. avoiding hole;203. heat dissipation hole;3. PCBA;30. fixed area;4. die-casting aluminum radiator. DETAILED DESCRIPTION

[0029] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawings, the utility model is further detailed.

[0030] As Figures 1-5 Indicated, in the embodiment, provide a multipurpose controller inner shielding cover installation structure, it mainly comprises plastic rear cover 1, shielding cover 2 and PCBA 3 etc. component. Plastic rear cover 1, shielding cover 2 and PCBA 3 are sequentially assembled up and down, plastic rear cover 1 is riveted between shielding cover 2, shielding cover 2 and PCBA 3 are fixed by buckling, and die-casting aluminum radiator 4 can be added below PCBA 3 to assist heat dissipation, and the whole is installed in the controller.

[0031] In order to better heat dissipation and reduce weight and material cost, shielding cover 2 specifically comprises two sections of heat dissipation area 21 and extension area 22 and is formed in a stepped shape. Heat dissipation area 21 is smaller in area, and the height is lower than extension area 22, heat dissipation area 21 is used to cover high-frequency high-power electronic components on PCBA 3, and extension area 22 is used to cover other electronic components on PCBA 3. In order to effectively transfer heat, heat conduction grease 210 is coated on the inner side surface of heat dissipation area 21.

[0032] Specifically, the inner side surface of the heat dissipation area 21 of the shielding cover 2 can be provided with a groove for applying the heat-conducting grease 210, the groove has a depth of 0.1 mm, and the heat-conducting grease 210 has a thickness of 0.4 mm. During assembly, the heat-conducting grease 210 directly contacts and closely adheres to the high-frequency and high-power electronic components on the PCBA 3, facilitating efficient heat dissipation. The heat is diffused and transferred to the extension area 22 through the heat dissipation area 21, and then dissipated through the extension area 22. A plurality of heat dissipation holes 203 are also provided on the extension area 22, which is beneficial to the overall efficient heat dissipation. In addition, the extension area 22 of the shielding cover 2 is also provided with an avoiding hole 202 for avoiding electronic components that are relatively high and do not need to be shielded. This structure of the shielding cover 2 combining the heat dissipation area 21 and the extension area 22 effectively transfers heat through the heat-conducting grease 210 of the heat dissipation area 21, which is beneficial to rapid heat dissipation. The heat-conducting grease 210 closely adheres to the high-frequency and high-power electronic components on the PCBA 3, which can achieve targeted and rapid heat dissipation. At the same time, the extension area 22 increases the heat dissipation area and expands the heat dissipation space, which assists the heat dissipation area 21 to dissipate heat efficiently. In addition, a plurality of heat dissipation holes 203 are also provided on the extension area 22, which not only accelerates heat dissipation but also reduces the overall weight. On the basis of ensuring effective heat dissipation, the overall structure can achieve targeted heat dissipation and shielding, save materials and costs, and reduce the overall weight.

[0033] Specifically, the shielding cover 2 is made of stainless steel, which is light in weight and effective in shielding. A plurality of elastic buckles 201 are arranged on the edge of the shielding cover 2, and a plurality of fixing areas 30 corresponding to the elastic buckles 201 are provided on the surface of the PCBA 3. The fixing areas 30 are exposed copper, which can be well grounded. The shielding cover 2 is connected and fixed with the PCBA 3 through the buckling of the elastic buckles 201 and the fixing areas 30. This buckling method is not only beneficial to the EMC test of the controller, but also facilitates the assembly of the automatic production line.

[0034] In order to further enhance the heat dissipation effect, a first limiting table 11 and three second limiting tables 12 are arranged inside the plastic back cover 1, and a rivet column 100 is arranged on each of the first limiting table 11 and the second limiting table 12. The height of the first limiting table 11 is higher than that of the second limiting table 12. A rivet light hole 200 is provided on the heat dissipation area 21 of the shielding cover 2 and is aligned with the rivet column 100 on the first limiting table 11. Three rivet light holes 200 are provided on the extension area 22 of the shielding cover 2 and are aligned with the rivet columns 100 on the three second limiting tables 12. In this way, the plastic back cover 1 is riveted with the shielding cover 2 through the rivet column 100 and the rivet light hole 200 of the shielding cover 2. The end surface of the first limiting table 11 abuts and limits the heat dissipation area 21, and the end surface of the second limiting table 12 abuts and limits the extension area 22. In this way, a certain spacing space can be left between the plastic back cover 1 and the shielding cover 2 on the basis of ensuring stable fixation, which is more beneficial to the overall heat dissipation performance and effect.

[0035] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The above specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the utility model. It should be understood that the above description is only for specific embodiments of the utility model and is not used to limit the utility model. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multipurpose controller inner shield mounting structure characterized by: It comprises a plastic back cover (1), a shielding cover (2) and a PCBA (3) assembled in sequence. The shielding cover (2) comprises a heat dissipation area (21) for covering high-frequency high-power electronic components on the PCBA (3) and an extension area (22) for covering other electronic components on the PCBA (3). The inner surface of the heat dissipation area (21) is coated with a heat-conducting grease (210), and the height of the heat dissipation area (21) is lower than that of the extension area (22). A plurality of heat dissipation holes (203) are formed in the extension area (22).

2. The multipurpose controller inner shield mount structure of claim 1, wherein: The shielding cover (2) is provided with a plurality of elastic buckles (201) at the edge, and the surface of the PCBA (3) is provided with a plurality of fixing areas (30) corresponding to the elastic buckles (201), and the shielding cover (2) is buckled with the fixing areas (30) of the PCBA (3) through the elastic buckles (201).

3. The multipurpose controller inner shield mount structure of claim 1, wherein: At least one first limiting table (11) and at least three second limiting tables (12) are arranged on the inner side of the plastic back cover (1), and a rivet column (100) is arranged on each of the first limiting table (11) and the second limiting table (12). Rivet light holes (200) corresponding to the rivet columns (100) on the first limiting table (11) are formed in the heat dissipation area (21) of the shielding cover (2), and rivet light holes (200) corresponding to the rivet columns (100) on the second limiting table (12) are formed in the extension area (22) of the shielding cover (2). The plastic back cover (1) is riveted with the rivet light holes (200) of the shielding cover (2) through the rivet columns (100), and the end face of the first limiting table (11) is limited by the heat dissipation area (21), and the end face of the second limiting table (12) is limited by the extension area (22).

4. The multipurpose controller inner shield mount structure of claim 3, wherein: The height of the first limiting table (11) is higher than that of the second limiting table (12).

5. The multipurpose controller inner shield mount structure of claim 1, wherein: The extension area (22) of the shielding cover (2) is also provided with an avoiding hole (202).

6. The multipurpose controller inner shield mount structure of claim 1, wherein: The inner surface of the heat dissipation area (21) of the shielding cover (2) is provided with a groove for coating the heat-conducting grease (210).

7. A multipurpose controller inner shield mounting structure according to claim 6, characterized in that: The depth of the groove is 0.1mm.

8. The multipurpose controller inner shield mount structure of claim 1, wherein: The bottom of the PCBA (3) is also provided with a die-cast aluminum radiator (4).

9. The multipurpose controller inner shield mount structure of claim 1, wherein: The material of the shielding cover (2) is stainless steel.

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