An electronic control unit for a vehicle

Abstract

The utility model relates to the technical field of automobile accessories, especially to an automobile electronic control unit, which comprises a shell, a cover, a control unit mainboard and a connector, the cover is buckled with the shell and is fixedly connected through a fastener, the control unit mainboard is clamped between the shell and the cover, one end of the connector is clamped between the shell and the cover and is electrically connected with the control unit mainboard, and the other end of the connector extends to the outside, the end surface of the shell is provided with a mounting cavity for embedding the cover, a sealing ring groove is formed in the inner bottom wall of the mounting cavity, a sealing assembly is further arranged in the sealing ring groove, the sealing assembly comprises a sealing ring and a supporting part, the supporting part is arranged between the sealing ring and the inner bottom wall of the sealing ring groove in abutment, and the sealing ring is in abutment with the cover through the supporting part, the shell and the cover are sealed through the sealing ring, and when the cover is buckled on the shell, the supporting part in the sealing ring groove further extrudes the sealing ring, so that the sealing property is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive electronic control unit. Background Technology

[0002] The Electronic Control Unit (ECU), often referred to as the "vehicle computer," is the core component of modern automotive electronic control systems. Essentially, it is a dedicated embedded microcomputer responsible for collecting and processing sensor signals from various parts of the vehicle and issuing precise instructions to actuators according to preset programs. This enables intelligent control of various vehicle subsystems. Like a regular computer, it consists of a microprocessor (CPU), memory (ROM, RAM), input / output interfaces (I / O), analog-to-digital converters (A / D), and large-scale integrated circuits for shaping and driving.

[0003] In the existing technology, automotive electronic control units do not have a good sealing structure. If the car is driven in a humid environment, the electronic control unit is easily invaded by liquid, which can damage the internal integrated circuits and affect the normal operation of the car. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an automotive electronic control unit. The housing and cover of this invention are sealed by a sealing ring. When the cover is fastened to the housing, the supporting component in the sealing ring groove further compresses the sealing ring, which greatly improves the sealing performance.

[0005] The technical solution adopted by this utility model is as follows: An automotive electronic control unit includes a housing, a cover, a control unit main board, and a connector. The cover is fastened to the housing and fixedly connected by fasteners. The control unit main board is sandwiched between the housing and the cover. One end of the connector is sandwiched between the housing and the cover and electrically connected to the control unit main board, while the other end extends to the outside. The end face of the housing is provided with a mounting cavity for the cover to be embedded. A sealing ring groove is formed in the bottom wall of the mounting cavity. A sealing component is also provided in the sealing ring groove. The sealing component includes a sealing ring and a supporting component. The supporting component is abutted between the sealing ring and the inner bottom wall of the sealing ring groove. The sealing ring is tightly abutted against the cover through the supporting component.

[0006] The width of the support component is adapted to the inner width of the sealing ring groove, and the support component has an annular support strip protruding along the center line. The sealing ring has an annular slot that is inserted and matched with the annular support strip. The height of the annular support strip is greater than the depth of the annular slot.

[0007] The housing has an opening on one side for inserting a connector. Each of the inner walls on both sides of the opening has a slot. Each of the outer walls on both sides of the connector has a locking block that matches the slot. The inner wall of the opening also has a sealing groove that communicates with the sealing ring groove. A sealing gasket is also provided in the sealing groove. The thickness of the sealing gasket is greater than the depth of the sealing groove.

[0008] The sealing ring groove and the sealing inclined groove are connected by an interface, and the supporting component extends to the interface and is provided with a first mating block. The sealing ring is connected to the sealing gasket through the first mating block.

[0009] The end face where the cover fits with the connector is provided with a sealing horizontal groove, and a sealing strip is provided in the sealing horizontal groove. A sealing vertical groove is provided at the position corresponding to the junction of the sealing horizontal groove and a second mating block is provided in the sealing vertical groove. An elastic buckle is provided on the side wall of the second mating block and a groove adapted to the elastic buckle is provided in the sealing vertical groove. The second mating block is also provided with an oblique groove for clamping the sealing strip.

[0010] The sealing ring and the sealing gasket are simultaneously sandwiched between the first mating block and the second mating block, and the second mating block is provided with a through groove for the sealing ring and the sealing gasket to extend into at the same time.

[0011] The first docking block is provided with a cross-shaped insert, and the second docking block is provided with a cross-shaped slot that engages with the cross-shaped insert.

[0012] The beneficial effects of this utility model are as follows: By setting a sealing ring groove and a sealing assembly composed of a sealing ring and a supporting component, the sealing ring groove is set on the bottom wall of the mounting cavity, that is, the end face where the cover and the housing are fastened. When the cover is fastened into the mounting cavity of the housing, the cover will further squeeze the sealing assembly to form a better sealing effect. The supporting component is detachably installed in the sealing ring groove, which not only makes replacement convenient but also provides long-term effective support and compression for the sealing ring. This effectively solves the problems of poor sealing performance and susceptibility to liquid intrusion damage in the prior art of automotive electronic control units. This structure can achieve a tight fit between the housing and the cover, ensuring that the internal integrated circuits are protected from corrosion in humid or liquid environments, significantly improving waterproof and dustproof performance and operational reliability, ensuring the stable operation of various automotive subsystems, extending product service life, and reducing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0014] Figure 1 This is an exploded view of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the housing mounting sealing assembly in this utility model; Figure 4 This is a partial schematic diagram of the shell in this utility model; Figure 5 This is a partial schematic diagram of the sealing component in this utility model; Figure 6 This is a schematic diagram of the structure of the cover body with the sealing strip installed in this utility model; Figure 7 This is a partial schematic diagram of the cover body in this utility model; Figure 8 This is a schematic diagram of the structure of the second docking block in this utility model; In the diagram, 1-shell, 2-cover, 3-control unit mainboard, 4-connector, 5-mounting cavity, 6-sealing ring groove, 7-sealing ring, 8-support component, 9-annular support strip, 10-annular slot, 11-opening, 12-slot, 13-block, 14-sealing oblique groove, 15-sealing gasket, 16-junction, 17-first mating block, 18-sealing transverse groove, 19-sealing strip, 20-sealing longitudinal groove, 21-second mating block, 22-elastic buckle, 23-groove, 24-oblique groove, 25-through groove, 26-cross insert block, 27-cross slot. Detailed Implementation

[0015] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0016] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0017] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0018] like Figures 1 to 8As shown, this is an embodiment of the present invention. An automotive electronic control unit includes a housing 1, a cover 2, a control unit main board 3, and a connector 4. The cover 2 is fastened to the housing 1 and fixedly connected by fasteners. The control unit main board 3 is sandwiched between the housing 1 and the cover 2. One end of the connector 4 is sandwiched between the housing 1 and the cover 2 and electrically connected to the control unit main board 3, while the other end extends to the outside. The end face of the housing 1 is provided with a mounting cavity 5 for the cover 2 to be embedded. A sealing ring groove 6 is formed in the bottom wall of the mounting cavity 5. A sealing assembly is also provided in the sealing ring groove 6. The sealing assembly includes a sealing ring 7 and a supporting member 8. The supporting member 8 is abutted between the sealing ring 7 and the inner bottom wall of the sealing ring groove 6. The sealing ring 7 is tightly abutted against the cover 2 through the supporting member 8.

[0019] The beneficial effects of this design are as follows: By setting a sealing ring groove and a sealing assembly consisting of a sealing ring and a supporting component, the sealing ring groove is located on the bottom wall of the mounting cavity, i.e., the end face where the cover and the housing fasten together. When the cover is fastened into the mounting cavity of the housing, it further compresses the sealing assembly, resulting in a better sealing effect. The supporting component is detachably installed in the sealing ring groove, which not only facilitates replacement but also provides long-term and effective support and compression for the sealing ring. This effectively solves the problems of poor sealing and susceptibility to liquid intrusion damage in existing automotive electronic control units. This structure achieves a tight fit between the housing and the cover, ensuring that the internal integrated circuits are protected from corrosion in humid or liquid environments, significantly improving waterproof and dustproof performance and operational reliability, ensuring the stable operation of various automotive subsystems, extending product lifespan, and reducing maintenance costs. Fasteners can be bolts, which not only provide a firm connection but also further tighten the cover and housing by tightening.

[0020] Further, the width of the support member 8 is adapted to the inner width of the sealing ring groove 6, and the support member 8 has an annular support strip 9 protruding along the center line. The sealing ring 7 has an annular slot 10 that is inserted and matched with the annular support strip 9. The height of the annular support strip 9 is greater than the depth of the annular slot 10.

[0021] The beneficial effects of this design are as follows: the support component can be perfectly embedded in the sealing ring groove, preventing the support component from slipping; the annular support bar portion that extends beyond the groove depth forms a rigid support inside the sealing ring, guiding the sealing ring to fully deform radially when compressed, enhancing the contact pressure between the sealing ring and the cover and the side wall of the sealing ring groove, further improving sealing reliability and delaying permanent deformation of the sealing ring.

[0022] Further, the housing 1 has an opening 11 on one side for the connector 4 to be inserted. The inner walls on both sides of the opening 11 are respectively provided with a slot 12. The outer walls on both sides of the connector 4 are respectively provided with a locking block 13 that matches the slot 12. The inner wall of the opening 11 is also provided with a sealing groove 14 that communicates with the sealing ring groove 6. A sealing gasket 15 is also provided in the sealing groove 14. The thickness of the sealing gasket 15 is greater than the depth of the sealing groove 14.

[0023] The beneficial effects of this design are as follows: the slot at the opening of the housing cooperates with the connector block to achieve precise lateral insertion and reliable fixation of the connector, avoiding loosening caused by vibration. At the same time, a sealing groove communicating with the sealing ring groove is opened on the inner wall of the opening, and a sealing gasket with a thickness greater than the groove depth is set. When the connector is inserted, the sealing gasket is squeezed and deformed to fully fill the gap between the connector and the opening, and forms a continuous sealing path with the sealing component in the sealing ring groove, effectively preventing liquid from entering from the connector installation side and improving the overall waterproof and moisture-proof performance.

[0024] In a further configuration, the junction of the sealing ring groove 6 and the sealing inclined groove 14 is provided with an interface 16, and the support component 8 extends to the interface 16 and is provided with a first mating block 17, and the sealing ring 7 is connected to the sealing gasket 15 through the first mating block 17.

[0025] The beneficial effects of this design are as follows: the sealing ring and the sealing gasket are structurally connected by the first mating block, integrating the sealing gasket on the connector side and the sealing assembly on the cover side into an interconnected one-piece sealing structure. This eliminates the assembly gap between the separate sealing components, blocks the path of liquid seepage along the joints of the parts, and when the sealing gasket is squeezed by the connector, the connecting structure applies a tension force to the sealing ring, improving the overall deformation consistency of the sealing assembly, enhancing the fit of each sealing interface, and achieving complete and continuous sealing of multiple interfaces of the control unit housing.

[0026] Further, a sealing transverse groove 18 is provided on the end face of the cover 2 that fits with the connector 4. A sealing strip 19 is provided in the sealing transverse groove 18. A sealing longitudinal groove 20 is provided in the sealing transverse groove 18 at the position corresponding to the junction 16. A second mating block 21 is provided in the sealing longitudinal groove 20. An elastic buckle 22 is provided on the side wall of the second mating block 21. A groove 23 adapted to the elastic buckle 22 is provided in the sealing longitudinal groove 20. An inclined groove 24 for clamping the sealing strip 19 is also provided on the second mating block 21.

[0027] The beneficial effects of this design are as follows: by setting a sealing transverse groove and sealing strip on the end face where the cover and connector fit together, and setting a sealing longitudinal groove at the corresponding position of the junction, the elastic buckle on the side wall of the second mating block adapts to the groove in the sealing longitudinal groove, achieving precise positioning and anti-detachment fixation of the second mating block in the longitudinal groove. At the same time, the inclined groove on the second mating block clamps the end of the sealing strip during installation, which not only fixes the sealing strip to the shell for easy assembly, but also deforms the two ends of the sealing strip towards the center under pressure, thus tightly fitting it to the surface of the connector. This structure connects the sealing strip on the side of the cover, the second mating block in the sealing longitudinal groove, and the sealing ring and sealing gasket at the junction into one, forming a complete closed-loop sealing path from the cover to the connector and then to the shell, eliminating dead angles between the various sealing components, and ensuring that there is no possibility of liquid penetration at the junction of the cover and the connector.

[0028] Furthermore, the sealing ring 7 and the sealing gasket 15 are simultaneously sandwiched between the first mating block 17 and the second mating block 21, and the second mating block 21 is provided with a through groove 25 for the sealing ring 7 and the sealing gasket 15 to extend into simultaneously.

[0029] The beneficial effects of this design are as follows: it allows the sealing ring and sealing strip to be clamped and wrapped at the junction, further pressing the ends of the sealing ring and sealing strip, eliminating any possible sealing gaps or discontinuities at the junction, and forming a continuous and uninterrupted sealing path between the shell, cover, and connector.

[0030] Further, the first docking block 17 is provided with a cross-shaped insert 26, and the second docking block 21 is provided with a cross-shaped slot 27 that engages with the cross-shaped insert 26.

[0031] The beneficial effects of this design are as follows: it enables the two to form a multi-directional limiting embedded connection at the interface, achieving high-precision positioning and reliable interlocking. Furthermore, the cross-shaped plug structure allows for quick alignment during assembly, ensuring precise connection of the mating ends of the sealing ring, sealing strip, and sealing gasket. This maintains a complete and uninterrupted sealing path from the shell through the interface to the cover, making assembly convenient and ensuring a stable connection over the long term.

[0032] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An automotive electronic control unit, comprising a housing (1), a cover (2), a control unit motherboard (3), and connectors (4), characterized in that: The cover (2) is fastened to the housing (1) and fixedly connected by fasteners. The control unit main board (3) is sandwiched between the housing (1) and the cover (2). One end of the connector (4) is sandwiched between the housing (1) and the cover (2) and electrically connected to the control unit main board (3). The other end extends to the outside. The end face of the housing (1) is provided with an installation cavity (5) for the cover (2) to be embedded. The bottom wall of the installation cavity (5) is provided with a sealing ring groove (6). The sealing ring groove (6) is also provided with a sealing component. The sealing component includes a sealing ring (7) and a support component (8). The support component (8) is abutted between the sealing ring (7) and the inner bottom wall of the sealing ring groove (6). The sealing ring (7) is tightly abutted against the cover (2) through the support component (8).

2. The automotive electronic control unit according to claim 1, characterized in that: The width of the support member (8) is adapted to the inner width of the sealing ring groove (6), and the support member (8) has an annular support strip (9) protruding along the center line. The sealing ring (7) has an annular slot (10) that is inserted and matched with the annular support strip (9). The height of the annular support strip (9) is greater than the depth of the annular slot (10).

3. The automotive electronic control unit according to claim 2, characterized in that: The housing (1) has an opening (11) on one side for inserting the connector (4). The inner walls on both sides of the opening (11) are respectively provided with a slot (12). The outer walls on both sides of the connector (4) are respectively provided with a block (13) that matches the slot (12). The inner wall of the opening (11) is also provided with a sealing groove (14) that communicates with the sealing ring groove (6). A sealing gasket (15) is also provided in the sealing groove (14). The thickness of the sealing gasket (15) is greater than the depth of the sealing groove (14).

4. An automotive electronic control unit according to claim 3, characterized in that: The sealing ring groove (6) and the sealing inclined groove (14) are connected by an interface (16), and the support component (8) extends to the interface (16) and is provided with a first mating block (17). The sealing ring (7) is connected to the sealing gasket (15) through the first mating block (17).

5. An automotive electronic control unit according to claim 4, characterized in that: The end face of the cover (2) that fits with the connector (4) is provided with a sealing transverse groove (18), and a sealing strip (19) is provided in the sealing transverse groove (18). The sealing transverse groove (18) is provided with a sealing longitudinal groove (20) at the position corresponding to the junction (16). A second mating block (21) is provided in the sealing longitudinal groove (20). An elastic buckle (22) is provided on the side wall of the second mating block (21). A groove (23) that matches the elastic buckle (22) is provided in the sealing longitudinal groove (20). An inclined groove (24) for clamping the sealing strip (19) is also provided on the second mating block (21).

6. An automotive electronic control unit according to claim 5, characterized in that: The sealing ring (7) and the sealing gasket (15) are sandwiched between the first docking block (17) and the second docking block (21). The second docking block (21) is provided with a through groove (25) into which the sealing ring (7) and the sealing gasket (15) can extend simultaneously.

7. An automotive electronic control unit according to claim 6, characterized in that: The first docking block (17) is provided with a cross-shaped insert (26), and the second docking block (21) is provided with a cross-shaped slot (27) that engages with the cross-shaped insert (26).

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