Anti-static heat dissipation ECU device provided with double-layer rear cover

Abstract

The invention relates to the field of automobile parts, in particular to an anti-static heat dissipation ECU device provided with a double-layer rear cover. An opening is formed in the upper end of a shell, and a circuit board is arranged in the shell; an opening is formed in the shell, the upper-layer rear cover is arranged at the opening and used for sealing and covering the opening, the lower-layer rear cover is arranged between the shell and the upper-layer rear cover, a heat dissipation silica gel gluing area is arranged on the face, facing an inner cavity of the shell, of the lower-layer rear cover, and the heat dissipation silica gel gluing area abuts against components on the circuit board to be used for heat dissipation. A through hole is formed in the lower-layer rear cover and used for allowing an anti-static spring connected with the circuit board to penetrate through, and the anti-static spring abuts against the upper-layer rear cover. The method has the advantages that the problem that electrostatic shielding and heat dissipation of the heat dissipation silica gel are needed is effectively solved, a plurality of key components can work in a better environment, and the design difficulty and the selection standard of the key components are greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of automobile parts, and in particular to an anti-static heat dissipation ECU device installed with a double-layer rear cover. Background Art

[0002] At present, the back cover plays a vital role in the IBCU. First, it has the functions of waterproof and dustproof, which can effectively protect the ECU housing and PCBA board, ensuring that the internal components of the equipment are not affected by the external environment. Secondly, the back cover is rigidly connected to the electrostatic spring on the PCBA board, which generates static electricity and forms an electrostatic shield with the entire back cover, thereby preventing the electronic components on the PCBA board from being disturbed by the external electric field. Finally, the back cover also provides a place to place heat dissipating silicone to dissipate heat for key components to ensure that these components can work normally. Therefore, the back cover plays an important role in maintaining the stability and reliability of the IBCU.

[0003] In the design of the IBCU back cover, there is often a conflict between forming an electrostatic shield and heat dissipation. The entire back cover may carry static electricity in the working state. If it is too close to the PCBA board, static electricity may directly affect the normal function of key components and even cause the risk of breaking through the air and damaging the components. In addition, there are many ping pins popping out of the PCBA board. If it is too close to the back cover, there is a risk of breaking through the back cover. Therefore, the gap between the back cover and the PCBA board needs to be greater than the safe distance. In order to effectively dissipate heat, there is also a certain required distance between the heat dissipation silicone and key components.

[0004] In the design of the rear cover of the car, electrostatic interference has a particularly serious impact on key components, and these components themselves require effective heat dissipation. While pursuing the prevention of electrostatic interference, ensuring the heat dissipation of components has become a thorny challenge. At present, more design directions are to prioritize ensuring that components are not affected by electrostatic interference, which means that the heat dissipation problem will become more prominent. More effective heat dissipation structures can be designed by designing vents, or adding fans or heat pipes, but on PCB boards with many components, these will completely change the original design layout, further increase the plane size, and cost a lot. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an anti-static heat dissipation ECU device with a double-layer rear cover installed to solve the above-mentioned problems existing in the prior art.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an anti-static heat dissipation ECU device with a double-layer back cover, comprising a shell, an upper back cover made of a metal material and a lower back cover made of an insulating material, the upper end of the shell is provided with an opening, and a circuit board is arranged in the shell; the upper back cover is arranged at the opening for sealing the opening, the lower back cover is arranged between the shell and the upper back cover, a heat dissipation silicone glue area is provided on the side of the lower back cover facing the inner cavity of the shell, the heat dissipation silicone glue area abuts against the components on the circuit board for heat dissipation, the lower back cover is provided with a through hole for an anti-static spring connected to the circuit board to pass through, and the anti-static spring abuts against the upper back cover.

[0007] The beneficial effects of the present invention are as follows: the present invention effectively solves the problem of both forming an electrostatic shield and dissipating heat with silicone gel, allowing multiple key components to work in a better environment, greatly reducing the design difficulty and selection criteria of key components; the present invention has a simple structure, and there will be no situation where the height difference of a single rear cover boss is extremely large, which reduces the possibility of cracks in the rear cover and the difficulty of processing, improves the product qualification rate of the rear cover, and improves the difficulty of maintaining product quality; in the present invention, both the upper rear cover and the lower rear cover can be manufactured by a stamping process, and the difficulty and cost of mass production are low.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the periphery of the upper back cover is provided with an edge, the shape of the edge matches the shape of the opening, and the edge is sealed and fixedly connected to the periphery of the opening.

[0010] The beneficial effect of adopting the above further solution is that the arrangement along the edge can facilitate the connection between the upper back cover and the shell.

[0011] Furthermore, a sealing groove is provided on the end surface of the edge facing the shell, and a protruding edge matching the sealing groove is provided on the periphery of the opening, and the protruding edge is inserted into the sealing groove.

[0012] The beneficial effect of adopting the above further solution is that the provision of the sealing groove and the protruding edge can facilitate the sealing and fixing of the upper rear cover and the shell, and improve the stability of the fixing.

[0013] Furthermore, a peripheral side edge extending toward the shell body is provided on the outer periphery of the edge, the peripheral side edge is provided on the outer side of the sealing groove, and the inner wall of the peripheral side edge abuts the outer wall of the protruding edge, a plurality of card slots are evenly spaced on the peripheral side edge, a plurality of fixed ribs are provided on the periphery of the lower back cover, and the plurality of fixed ribs are inserted into the card slots one by one, and a plurality of protruding ribs are provided on the protruding edge, and the protruding ribs are inserted into the card slots one by one and press the fixed ribs against the bottom of the card slot.

[0014] The beneficial effects of adopting the above further scheme are: through the cooperation of the protruding ribs and the card grooves, the fixed ribs are pressed and fixed, thereby realizing the limited fixation of the lower back cover, with a simple structure and easy installation; in the process of sealing, the glue overflowing from the sealing groove flows into the outer wall of the peripheral side edge and the protruding edge, realizing the connection between the peripheral side edge and the outer wall of the shell, thereby improving the connection strength and improving the sealing between the upper back cover and the shell.

[0015] Furthermore, the protruding edge is provided with a limiting groove corresponding to the card groove one by one, the protruding rib is arranged on the outer wall of the protruding edge, and the top of the protruding rib and the bottom of the limiting groove are located in the same plane, and the fixed rib is inserted in the limiting groove.

[0016] The beneficial effect of adopting the above further solution is that the setting of the limiting groove can further achieve the limiting between the shell and the upper rear cover through the fixing ribs, which is convenient for installation.

[0017] Furthermore, a support platform is provided on the inner wall along the edge, and a plurality of support ribs are evenly provided on the inner wall of the opening, and the support ribs press the periphery of the lower layer back cover against the support platform.

[0018] The beneficial effect of adopting the above further solution is that the lower rear cover is pressed against the support platform by the support ribs, thereby achieving position limiting and fixing of the lower rear cover, with a simple structure and easy installation.

[0019] Furthermore, the support platform is an annular support platform.

[0020] The beneficial effect of adopting the above further solution is that the support platform adopts an annular structure, which can press against the periphery of the lower rear cover to ensure the stability of the fixation of the lower rear cover.

[0021] Furthermore, there are multiple support platforms, and the multiple support platforms are evenly spaced along the periphery of the edge, and the lower end surfaces of the multiple support platforms are located in the same plane.

[0022] The beneficial effect of adopting the above further solution is that: the support platforms are multiple, the lower end surfaces of which are in the same plane, which can press and fix the lower rear cover while reducing material consumption.

[0023] Furthermore, a plurality of protrusions are evenly arranged on the protruding edge, and the plurality of protrusions abut against the inner wall of the sealing groove.

[0024] The beneficial effect of adopting the above further scheme is that the setting of the protrusion can ensure that there is a certain gap between the top of the protruding edge and the inner wall of the sealing groove to accommodate the sealant, thereby avoiding excessive overflow of the sealant in the sealing groove during press-fitting and dispensing, resulting in loose connection and insufficient sealing.

[0025] Furthermore, a plurality of bosses are provided on a surface of the lower back cover facing the shell, and the heat dissipation silicone glue application area is provided on the bosses.

[0026] The beneficial effect of adopting the above further solution is: a number of bosses are set according to the number of key heat dissipation components, and the height of the bosses is determined by the height difference of the key components, which can effectively adapt to the difference in height of different components and ensure the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the housing in the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper back cover in the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower back cover in the present invention;

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Shell; 2. Upper back cover; 3. Lower back cover; 4. Opening; 5. Edge; 6. Sealing groove; 7. Protruding edge; 8. Card slot; 9. Fixed rib; 10. Protruding rib; 11. Side edge; 12. Limiting groove; 13. Bump. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Embodiment 1

[0035] like Figure 1 As shown, this embodiment includes a shell 1, an upper back cover 2 made of metal material and a lower back cover 3 made of insulating material, the upper end of the shell 1 is provided with an opening 4, and the circuit board is arranged in the shell 1; the upper back cover 2 is arranged at the opening 4 for sealing the opening 4, the lower back cover 3 is arranged between the shell 1 and the upper back cover 2, and a heat dissipation silicone glue area is provided on the side of the lower back cover 3 facing the inner cavity of the shell 1, the heat dissipation silicone glue area abuts against the components on the circuit board for heat dissipation, and a through hole is provided on the lower back cover 3 for an anti-static spring (not drawn in the drawing) connected to the circuit board to pass through, and the anti-static spring abuts against the upper back cover 2.

[0036] In this embodiment, the back cover includes an upper back cover 2 made of metal material and a lower back cover 3 made of insulating material. The two back covers perform different functions. The upper back cover 2 is preferably made of aluminum material and is in direct contact with the electrostatic spring to achieve electromagnetic shielding to resist external interference. The lower back cover is made of insulating material and is specially used to provide a heat dissipation silicone gluing area to dissipate heat from components. The upper back cover 2 is fixed with the shell 1, and the lower back cover 3 is firmly fixed by the clamping of the upper back cover 2 and the shell 1, which effectively solves the contradiction between heat dissipation and anti-static interference of the traditional back cover and achieves better performance.

[0037] In this embodiment, an edge 5 is provided on the periphery of the upper back cover 2, the shape of the edge 5 matches the shape of the opening 4, and the edge 5 is sealed and fixedly connected to the periphery of the opening 4. The setting of the edge 5 can facilitate the connection between the upper back cover 2 and the shell 1.

[0038] In this embodiment, a sealing groove 6 is provided on the end surface of the edge 5 facing the shell 1, and a protruding edge 7 matching the sealing groove 6 is provided around the opening 4. The protruding edge 7 is inserted into the sealing groove 6. The setting of the sealing groove 6 and the protruding edge 7 can facilitate the sealing and fixation of the upper back cover 2 and the shell 1, and improve the stability of the fixation.

[0039] In this embodiment, a plurality of protrusions 13 are evenly arranged on the protruding edge 7, and the plurality of protrusions 13 abut against the inner wall of the sealing groove 6. The arrangement of the protrusions 13 can ensure that there is a certain gap between the top of the protruding edge 7 and the inner wall of the sealing groove 6 to accommodate the sealant, thereby avoiding excessive overflow of the sealant in the sealing groove 6 during press-fitting and dispensing, resulting in a loose connection and insufficient sealing.

[0040] In this embodiment, the lower back cover 3 is provided with a plurality of bosses on the side facing the housing 1, and the heat dissipation silicone rubber gluing area is provided on the bosses. A plurality of bosses are provided according to the number of key heat dissipation components, and the height of the bosses is determined by the height difference of the key components, which can effectively adapt to the height difference of different components and ensure the heat dissipation effect. If there are multiple key components that need to be dissipated and have different heights, a stamping process can be used to make multiple bosses appear, and the height of the bosses is determined by the height difference of the key components.

[0041] In this embodiment, the upper back cover 2 can be provided with reinforcing ribs on the side facing the housing 1 to enhance its structural strength and adapt to a series of functions such as the label area.

[0042] Embodiment 2

[0043] like Figure 3 , Figure 4As shown, this embodiment makes the following improvements on the basis of the first embodiment: a peripheral side edge 11 extending toward the shell 1 is provided on the outer periphery of the edge 5, the peripheral side edge 11 is provided on the outer side of the sealing groove 6, and the inner wall of the peripheral side edge 11 abuts against the outer wall of the protruding edge 7, a plurality of card slots 8 are evenly spaced on the peripheral side edge 11, a plurality of fixed ribs 9 are provided on the periphery of the lower back cover 3, and the plurality of fixed ribs 9 are inserted into the card slots 8 one by one, a plurality of protruding ribs 10 are provided on the protruding edge 7, and the protruding The protruding ribs 10 are inserted into the card slots 8 one by one and the fixed ribs 9 are pressed against the bottom of the card slots 8. The fixed ribs 9 are pressed and fixed by the cooperation of the protruding ribs 10 and the card slots 8, thereby realizing the limited fixation of the lower back cover 3. The structure is simple and the installation is convenient. In the process of sealing, the glue overflowing from the sealing groove 6 flows between the inner wall of the peripheral side edge 11 and the outer wall of the protruding edge 7, thereby realizing the connection between the peripheral side edge 11 and the outer wall of the shell 1, thereby improving the connection strength and improving the sealing between the upper back cover 2 and the shell 1.

[0044] The arrangement of the protruding ribs 10, the fixed ribs 9 and the card slots 8 can realize the positioning between the upper rear cover 2, the lower rear cover 3 and the housing 1, facilitate assembly, and prevent loosening or displacement during use.

[0045] like Figure 2 As shown, in this embodiment, a limiting groove 12 corresponding to the card slot 8 is provided on the protruding edge 7, the protruding rib 10 is provided on the outer wall of the protruding edge 7, and the top of the protruding rib 10 and the bottom of the limiting groove 12 are located in the same plane, and the fixed rib 9 is inserted in the limiting groove 12. The setting of the limiting groove 12 can further realize the limitation between the shell 1 and the upper back cover 2 through the fixed rib 9, which is convenient for installation.

[0046] In this embodiment, by modifying the depth of the card slot 8 and the height of the protruding rib 10, the height position of the lower back cover 3 can be flexibly controlled. The gap between the lower back cover 3 and the circuit board is determined by the height of the key components that need heat dissipation, and the gap can be ensured by modifying the height of the corresponding fixed rib 9.

[0047] In the process of dispensing glue, the present invention needs to stay at the upper back cover 2 for some longer time. In the subsequent press-fitting, the glue overflows and the sealant in the sealing groove 6 slides down along the limiting groove 12, thereby achieving sealing at the limiting groove 12. In addition, a special dispensing glue treatment can also be performed between the inner wall of the peripheral side 11 and the outer wall of the protruding edge 7.

[0048] Embodiment 3

[0049] This embodiment makes the following improvements on the basis of the first embodiment: a support platform is provided on the inner wall of the edge 5, and a plurality of support ribs are evenly provided on the inner wall of the opening 4, and the support ribs press the periphery of the lower back cover 3 against the support platform, and the lower back cover 3 is pressed against the support platform by the support ribs, thereby achieving the limiting fixation of the lower back cover 3, with a simple structure and easy installation.

[0050] In this embodiment, the support platform is an annular support platform, or the number of the support platforms is multiple, and the multiple support platforms are evenly spaced along the periphery of the edge 5, and the lower end surfaces of the multiple support platforms are located in the same plane. The support platforms press against the periphery of the lower back cover 3 to ensure the stability of the fixation of the lower back cover 3.

[0051] In order to facilitate the positioning of the lower rear cover 3, positioning blocks can be provided around the bottom surface of the lower rear cover 3, and corresponding positioning grooves can be provided on the support platform to achieve the positioning and installation of the lower rear cover 3 and the support platform.

[0052] The present invention effectively solves the problem of both forming an electrostatic shield and dissipating heat with silicone gel, allowing multiple key components to work in a better environment, greatly reducing the design difficulty and selection criteria of key components; the present invention has a simple structure, and there will be no situation where the height difference of a single rear cover boss is extremely large, which reduces the possibility of cracks in the rear cover and the difficulty of processing, improves the product qualification rate of the rear cover, and improves the difficulty of maintaining product quality; in the present invention, both the upper rear cover 2 and the lower rear cover 3 can be manufactured by a stamping process, and the difficulty and cost of mass production are low.

[0053] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-static heat dissipation ECU device with a double-layer back cover, characterized in that: The invention comprises a shell (1), an upper back cover (2) made of a metal material, and a lower back cover (3) made of an insulating material. The upper end of the shell (1) is provided with an opening (4), and a circuit board is arranged in the shell (1); the upper back cover (2) is arranged at the opening (4) for sealing the opening (4); the lower back cover (3) is arranged between the shell (1) and the upper back cover (2); a heat dissipation silicone glue area is provided on a surface of the lower back cover (3) facing the inner cavity of the shell (1); the heat dissipation silicone glue area abuts against components on the circuit board for heat dissipation; a through hole is provided on the lower back cover (3) for an anti-static spring connected to the circuit board to pass through; the anti-static spring abuts against the upper back cover (2).

2. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 1 is characterized in that: The periphery of the upper rear cover (2) is provided with an edge (5), the shape of the edge (5) matches the shape of the opening (4), and the edge (5) is sealed and fixedly connected to the periphery of the opening (4).

3. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 2 is characterized in that: A sealing groove (6) is provided on the end surface of the edge (5) facing the shell (1), and a protruding edge (7) matching the sealing groove (6) is provided on the periphery of the opening (4), and the protruding edge (7) is inserted into the sealing groove (6).

4. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 3 is characterized in that: A peripheral side edge (11) extending toward the shell (1) is provided on the outer periphery of the edge (5), the peripheral side edge (11) is provided on the outer side of the sealing groove (6), and the inner wall of the peripheral side edge (11) abuts against the outer wall of the protruding edge (7), a plurality of card slots (8) are evenly spaced on the peripheral side edge (11), a plurality of fixed ribs (9) are provided on the periphery of the lower layer back cover (3), and the plurality of fixed ribs (9) are inserted into the card slots (8) one by one, and a plurality of protruding ribs (10) are provided on the protruding edge (7), and the protruding ribs (10) are inserted into the card slots (8) one by one and press the fixed ribs (9) against the bottom of the card slot (8).

5. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 4 is characterized in that: The protruding edge (7) is provided with a limiting groove (12) corresponding to the clamping groove (8) one by one, the protruding rib (10) is arranged on the outer wall of the protruding edge (7), and the top of the protruding rib (10) and the bottom of the limiting groove (12) are located in the same plane, and the fixed rib (9) is inserted into the limiting groove (12).

6. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 2 is characterized in that: A support platform is provided on the inner wall of the edge (5), and a plurality of support ridges are evenly provided on the inner wall of the opening (4), wherein the support ridges press the periphery of the lower layer back cover (3) against the support platform.

7. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 6, characterized in that: The support platform is an annular support platform.

8. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 6, characterized in that: There are multiple support platforms, and the multiple support platforms are evenly spaced along the periphery of the edge (5), and the lower end surfaces of the multiple support platforms are located in the same plane.

9. The anti-static heat dissipation ECU device with a double-layer rear cover according to claim 3 is characterized in that: A plurality of protrusions (13) are evenly arranged on the protruding edge (7), and the plurality of protrusions (13) abut against the inner wall of the sealing groove (6).

10. An anti-static heat dissipation ECU device with a double-layer rear cover according to any one of claims 1 to 9, characterized in that: A plurality of bosses are provided on a surface of the lower back cover (3) facing the shell (1), and the heat dissipation silicone glue application area is provided on the bosses.

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