CN214070476U - Heat radiation structure and ECU drive box - Google Patents
Heat radiation structure and ECU drive box Download PDFInfo
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- CN214070476U CN214070476U CN202120014248.9U CN202120014248U CN214070476U CN 214070476 U CN214070476 U CN 214070476U CN 202120014248 U CN202120014248 U CN 202120014248U CN 214070476 U CN214070476 U CN 214070476U
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Abstract
The utility model provides a heat dissipation structure and an ECU driving box, wherein the heat dissipation structure comprises a sheet metal radiator, a shell, a part to be cooled and a self-tapping screw; the sheet metal radiator is hermetically connected with the shell to form an accommodating space; a plurality of screw columns formed by extrusion or punching are arranged on one side, away from the shell, of the sheet metal radiator, the screw columns extend from the surface of the sheet metal radiator to the direction away from the accommodating space, and one end, away from the surface of the sheet metal radiator, of each screw column is closed; the part to be cooled is located in the accommodating space, the position, corresponding to the screw column, of the part to be cooled is provided with a hole, and the self-tapping screw penetrates through the hole to be meshed with the screw column, so that the part to be cooled is fixedly connected with the sheet metal radiator. After adopting above-mentioned technical scheme, on the one hand increased heat radiating area, improved the radiating effect, on the other hand, screw post end seal has strengthened the leakproofness of structure.
Description
Technical Field
The utility model relates to an Electronic Control Unit (ECU, Electronic Control Unit) technical field especially relates to a heat radiation structure and an ECU drive box.
Background
In the prior art, a PCB of an ECU generally needs to be connected to an aluminum alloy sheet metal radiator for heat dissipation. The aluminum alloy sheet metal radiator and the PCB are connected through silica gel, when the silica gel expands due to heating, contact points on the PCB are separated from contact points on the aluminum alloy sheet metal radiator, and performance of products such as ESD (Electrostatic Discharge) and EMC (Electromagnetic Compatibility) is affected, so that functions of the products are unstable. Or, increase riveted metal spring leaf between aluminum alloy panel beating radiator and the PCB circuit board, connect PCB and panel beating radiator through the spring leaf, this kind of connected mode cost is higher, also has long-term use and connects insecure hidden danger such as when receiving violent shock vibration under adverse circumstances, influences product ESD (electrostatic discharge), performances such as EMC (electromagnetic compatibility), leads to product function unstable. Or, aluminum alloy panel beating radiator and PCB circuit board pass through the screw connection, but can form the trompil on aluminum alloy panel beating radiator through the scheme of screw connection, even the screw is screwed up also to be difficult to form effective sealing to influence the holistic sealed effect of device, be difficult to reach IP6K, 9K's sealed grade.
CN 210403707U in the prior art discloses a heat dissipation device, which dissipates heat of an integrated circuit chip through a plastic heat dissipation element and a metal heat conduction element, and has a large number of parts and a complex assembly process.
Therefore, it is necessary to develop a heat dissipation structure that has a simple structure, can effectively dissipate heat from a component to be heat-dissipated (e.g., a PCB), and can ensure the sealing performance of the device.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect, the utility model aims to provide a simple structure, can treat the radiating part and effectively dispel the heat and can guarantee the heat radiation structure of device leakproofness and have this heat radiation structure's ECU drive box.
The utility model discloses a heat dissipation structure, which comprises a sheet metal radiator, a shell, a part to be dissipated and self-tapping screws;
the sheet metal radiator is hermetically connected with the shell to form an accommodating space;
a plurality of screw columns formed by extrusion or punching are arranged on one side, away from the shell, of the sheet metal radiator, the screw columns extend from the surface of the sheet metal radiator to the direction away from the accommodating space, and one end, away from the surface of the sheet metal radiator, of each screw column is closed;
the part to be cooled is located in the accommodating space, the position, corresponding to the screw column, of the part to be cooled is provided with a hole, and the self-tapping screw penetrates through the hole to be meshed with the screw column, so that the part to be cooled is fixedly connected with the sheet metal radiator.
Preferably, be close to the screw post the panel beating radiator surface and internal surface have respectively and encircle the first recess and the second recess of screw post, first recess with the surface of screw post adjoins, the second recess with first recess is in stagger in the thickness direction of panel beating radiator.
Preferably, the first groove is a U-shaped groove;
the second groove is a V-shaped groove.
Preferably, the first groove and the second groove are formed by extrusion or punching.
Preferably, the sheet metal radiator and the shell are connected in a sealing mode through sealing glue in the circumferential direction.
Preferably, the part to be radiated is a PCB.
Preferably, the sheet metal radiator is connected with a ground wire of the PCB.
Preferably, the sheet metal radiator is made of aluminum alloy;
the shell is made of metal or plastic.
The utility model also discloses a ECU drive box, the ECU drive box includes as above heat radiation structure, wherein, it does to treat the heat dissipation part ECU's PCB.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the sheet metal radiator is provided with the plurality of raised screw columns, so that the total heat dissipation area of the sheet metal radiator is increased, and the heat dissipation effect is improved;
2. the screw columns are formed by extrusion or stamping, and the end parts of the screw columns are closed, so that the overall sealing performance of the sheet metal radiator and the heat dissipation structure is improved, and a higher sealing grade can be achieved;
3. the inner surface and the outer surface of the sheet metal radiator at the periphery of the screw column are provided with the groove characteristics, so that the structural strength of the screw column is ensured;
4. when treating the radiating part for PCB, the panel beating radiator of this application both had played shielding EMC's effect as the radiator, as the shield cover again to reduce part quantity and assembly step, and then reduced manufacturing and assembly cost.
Drawings
Fig. 1 and 2 are schematic diagrams of overall structures of different angles of a heat dissipation structure according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of the heat dissipation structure of fig. 1 and 2;
fig. 4 is an internal view of the heat dissipation structure of fig. 1 and 2;
FIG. 5 is a schematic structural view of the outer surface of a sheet metal heat sink around a screw post in a heat dissipation structure;
FIG. 6 is a schematic structural view of the inner surface of a sheet metal heat sink around a screw post in a heat dissipation structure;
fig. 7 is a cross-sectional view of a sheet metal heat sink at the screw post in the heat dissipating structure.
Reference numerals:
a-a sheet metal radiator, B-a component to be radiated, C-a shell, D-a self-tapping screw, an E-screw column, an F-a first groove and a G-a second groove.
Detailed Description
The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1-7, a schematic diagram of a heat dissipation structure in an embodiment of the present invention includes a sheet metal heat sink a, a housing C, a heat dissipation component B, and a self-tapping screw D.
The sheet metal radiator A is connected with the shell C in a sealing mode to form an accommodating space, and the part B to be cooled is located in the accommodating space. In this embodiment, the sheet metal heat sink a and the housing C are connected in a sealing manner by a sealant in the circumferential direction. Specifically, casing C is provided with the sealant groove along its circumference, and the sealant is filled in the sealant groove, the circumference edge of panel beating radiator A matches with the sealant groove shape and stretches into in the sealant groove rather than splicing, forms sealedly. The shell C protects the internal parts to be cooled, and is dustproof and waterproof. Preferably, the housing C is further provided with a connector interface for connecting the internal member B to be heat-dissipated and the outside. The material of panel beating radiator A is the aluminum alloy, the material of casing C is plastics or metal.
The sheet metal radiator A is used for radiating the part B to be radiated. In this embodiment, the component B to be cooled is a PCB (Printed Circuit Board) which carries electronic components, and the electronic components generate a large amount of heat during operation. The sheet metal radiator A is far away from one side of the shell C (namely the bottom of the sheet metal radiator A in the figure 1) is provided with a plurality of screw columns E formed through extrusion or stamping technology, and preferably, the screw columns E are formed through the extrusion technology. Screw post E certainly panel beating radiator A surface extends to the direction of keeping away from accommodation space, screw post E keeps away from the one end on panel beating radiator A surface is sealed. In this embodiment, the number of the screw columns E is 2, and in other embodiments, the number of the screw columns E may also be 4 or more. The screw column E is used for fixing the part B to be cooled.
The position of the part B to be cooled, which corresponds to the screw column E, is provided with a hole, and the self-tapping screw D penetrates through the hole to be meshed with the screw column E, so that the part B to be cooled is fixedly connected with the sheet metal radiator A. In this embodiment, in this way, the PCB is fixedly connected to the sheet metal heat sink a, so that the PCB can dissipate heat through the sheet metal heat sink a. On one hand, the total heat dissipation area of the sheet metal radiator A is increased by the plurality of screw columns E arranged on the sheet metal radiator A, so that the heat dissipation effect is improved; on the other hand, the screw column E is formed by extrusion or stamping, the end part is closed, and the sheet metal radiator A does not have an opening, so that the sealing performance of the sheet metal radiator A and the whole radiating structure is improved, and a higher sealing grade can be achieved; in addition, when the PCB is fixedly connected with the sheet metal radiator A, the sheet metal radiator A can be reliably contacted with the ground wire of the PCB, so that the technical effect of shielding electromagnetic interference is realized.
Further, in this embodiment, the outer surface and the inner surface of the sheet metal heat radiator a adjacent to the screw column E are respectively provided with a first groove F and a second groove G surrounding the screw column E, the first groove F is adjacent to the outer surface of the screw column E, and the second groove G is staggered with the first groove F in the thickness direction of the sheet metal heat radiator a. By staggering in the thickness direction, it is possible to avoid that the wall thickness therebetween is too thin and affects the structural strength. Preferably, the first groove F and the second groove G are formed by extrusion or stamping, and the first groove F is a U-shaped groove; the second groove G is a V-shaped groove. The structural strength of the screw column E is remarkably improved through the arrangement of the first groove F and the second groove G. In this embodiment, the sheet metal radiator a is made of aluminum alloy, and because the strength of the aluminum material itself is not high, the structure can significantly improve the structural strength of the screw column E, otherwise, the screw column E may deform due to stress, and meanwhile, the structure also improves the appearance quality after molding, thereby ensuring the sealing performance of the screw column E without any fracture opening, and ensuring the smoothness of the surface of the screw column E in contact with the PCB, thereby ensuring the reliable contact.
The heat radiation structure of this embodiment is when the assembly, treat earlier that radiating part B is fixed to panel beating radiator A through self-tapping screw D on, again with panel beating radiator A and casing C sealing connection.
The utility model also discloses an ECU drive box, the ECU drive box includes as above heat radiation structure, wherein, treat heat dissipation part B do ECU's PCB, panel beating radiator A and casing C pass through sealed glue sealing connection, be provided with the connector interface that is used for making PCB and external connection on the casing C.
It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A heat dissipation structure is characterized by comprising a sheet metal heat radiator, a shell, a part to be dissipated and a self-tapping screw;
the sheet metal radiator is hermetically connected with the shell to form an accommodating space;
a plurality of screw columns formed by extrusion or punching are arranged on one side, away from the shell, of the sheet metal radiator, the screw columns extend from the surface of the sheet metal radiator to the direction away from the accommodating space, and one end, away from the surface of the sheet metal radiator, of each screw column is closed;
the part to be cooled is located in the accommodating space, the position, corresponding to the screw column, of the part to be cooled is provided with a hole, and the self-tapping screw penetrates through the hole to be meshed with the screw column, so that the part to be cooled is fixedly connected with the sheet metal radiator.
2. The heat dissipating structure of claim 1,
the screw post is close to the metal plate radiator surface and internal surface have respectively and encircle the first recess and the second recess of screw post, first recess with the surface of screw post adjoins, the second recess with first recess is in stagger in the thickness direction of metal plate radiator.
3. The heat dissipating structure of claim 2,
the first groove is a U-shaped groove;
the second groove is a V-shaped groove.
4. The heat dissipating structure of claim 2,
the first groove and the second groove are formed by extrusion or punching.
5. The heat dissipating structure of claim 1,
the sheet metal radiator and the shell are connected in a sealing mode in the circumferential direction through sealing glue.
6. The heat dissipating structure of claim 1,
the part to be cooled is a PCB.
7. The heat dissipating structure of claim 6,
the metal plate radiator is connected with the ground wire of the PCB.
8. The heat dissipating structure of claim 7,
the metal plate radiator is made of aluminum alloy;
the shell is made of metal or plastic.
9. An ECU drive cartridge characterized in that,
the ECU drive case includes the heat dissipation structure according to any one of claims 1 to 8, wherein the component to be heat-dissipated is a PCB of the ECU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120014248.9U CN214070476U (en) | 2021-01-05 | 2021-01-05 | Heat radiation structure and ECU drive box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120014248.9U CN214070476U (en) | 2021-01-05 | 2021-01-05 | Heat radiation structure and ECU drive box |
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| Publication Number | Publication Date |
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| CN214070476U true CN214070476U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120014248.9U Active CN214070476U (en) | 2021-01-05 | 2021-01-05 | Heat radiation structure and ECU drive box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116801587A (en) * | 2023-06-28 | 2023-09-22 | 浙江得邦车用照明有限公司 | Heat dissipation device of external ECU structure of headlight and implementation method thereof |
-
2021
- 2021-01-05 CN CN202120014248.9U patent/CN214070476U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116801587A (en) * | 2023-06-28 | 2023-09-22 | 浙江得邦车用照明有限公司 | Heat dissipation device of external ECU structure of headlight and implementation method thereof |
| CN116801587B (en) * | 2023-06-28 | 2024-04-02 | 浙江得邦车用照明有限公司 | Heat dissipation device of external ECU structure of headlight and implementation method thereof |
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