Domain controller double-layer PCBA board fixing structure

Abstract

The utility model discloses a domain controller double-layer PCBA board fixing structure which comprises a domain controller shell and a domain controller cover plate, a circle of supporting boss is arranged at the bottom in a cavity of the domain controller shell in the circumferential direction, and boss threaded holes are formed in the supporting boss; an external thread fixing part is arranged at the lower end of the supporting column, and a supporting column threaded hole is formed in the upper end face of the supporting column; a strip-shaped positioning column is further arranged on the inner side wall of the domain controller shell. The strip-shaped positioning column comprises a strip-shaped clamping part and a cylindrical clamping part. According to the domain controller double-layer PCBA board fixing structure disclosed by the utility model, the structure in the domain controller shell is simplified, the processing and manufacturing of a domain controller mold are facilitated, and meanwhile, the space occupied by the supporting boss is reduced, so that the PCBA board is simple in shape and easy to process; and meanwhile, the strip-shaped positioning column is provided with a cylindrical clamping part, so that the upper PCBA board can be limited in the horizontal direction, and the domain controller is convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of traffic domain controller especially, relate to a domain controller double -deck PCBA board fixed structure. BACKGROUND

[0002] The domain controller is the product of the integration process of automobile electronic and electrical architecture, which generally includes five parts of computing module, storage module, communication module, sensor interface, operating system and application software. Among them, the computing module is the core part of the domain controller, responsible for processing various sensor data and executing complex algorithms. The computing module usually contains multiple types of processors, such as AI processors for deep learning or inference calculation of large models, GPUs or FPGAs for image processing and graphics correction, DSPs for fast operation, and CPUs responsible for logical operation and decision control; The storage module is used to store the operating system, application program and sensor data; The communication module is used for external communication and internal communication, which generally includes LVDS, Ethernet, CAN, LIN, FlexRay, RS232 and other communication interfaces; The sensor interface includes sensor interfaces for connecting various sensors such as cameras, millimeter wave radars and laser radars; The operating system and application software are used to realize various functions.

[0003] Because the domain controller needs to set more processors, controllers, communication interfaces and sensor interfaces and other hardware structures, generally in order to reduce the volume and occupied space of the domain controller, the domain controller is generally set as a double -deck PCBA board structure, such as Figure 7 、 Figure 8 and Figure 9 As shown, the existing double -deck PCBA board fixing structure of the domain controller is as follows, including the domain controller shell 1 and the domain controller cover plate (not shown in the figure), four double -deck table structures 18 are arranged on the two opposite inner side walls of the domain controller shell, the double -deck table structure is in "L" type structure, the short side is arranged horizontally to form the first boss 180, and the long side is arranged vertically to form the second boss 181, the first boss on the same inner side wall is located on the inner side of the second boss, the upper surface of the first boss forms the supporting surface of the lower PCBA board, and the upper surface of the second boss forms the supporting surface of the upper PCBA board, the upper and lower PCBA boards are arranged on the first boss and the second boss respectively and fixed by screwing. At the same time, positioning column structure is arranged on the inner wall of the domain controller, so as to position the upper and lower PCBA boards through the positioning strip structure in the installation process.

[0004] The existing double-layer PCBA board fixing structure of the domain controller has the following problems: (1) because the double-layer table structure is arranged in the domain controller shell, the space of the layout on the PCBA board is reduced, and meanwhile, the edges and corners of the lower PCBA board need to be machined to facilitate the installation of the first boss, thereby increasing the complexity of the board shape; (2) because the double-layer table structure needs to be arranged in the domain controller shell, the complexity of the mold is increased, and the mold machining is complex and difficult; (3) the positioning column is only used for positioning the upper and lower PCBA boards, and the structure function is single, which is not convenient for the assembly of the domain controller PCBA board. Content of the utility model

[0005] The utility model provides a kind of domain controller double-layer PCBA board fixing structure to realize the problems existing in existing domain controller.

[0006] The technical means adopted by the utility model are as follows:

[0007] A kind of domain controller double-layer PCBA board fixing structure, including domain controller shell and domain controller cover plate, the cavity of the domain controller shell is peripherally equipped with a lower layer PCBA board support boss for supporting lower layer PCBA board, and the lower layer PCBA board support boss is equipped with boss threaded hole for fixing the lower layer PCBA board;

[0008] Further include support column, the lower end of the support column is equipped with outer thread fixing part for passing through the through hole on the lower layer PCBA board and being threadedly connected with the boss threaded hole to fix the lower layer PCBA board on the lower layer PCBA board support boss, and the upper end of the support column is equipped with support column threaded hole for fixing the upper layer PCBA board placed on the upper end surface of support column on the upper end surface of the support column by screw;

[0009] The inner side wall of the domain controller shell is further equipped with strip-shaped positioning column, and the strip-shaped positioning column includes strip-shaped clamping part for clamping with strip-shaped positioning slot on the lower layer PCBA board and column-shaped clamping part located on the upper end of the strip-shaped clamping part for clamping with circular positioning hole on the upper layer PCBA board.

[0010] Further, the support column is a copper stud.

[0011] Further, the support column is in electrical contact with the ground layer of the PCBA board.

[0012] Further, one side of the lower layer PCBA board support boss and the inner side wall of the corresponding side of the domain controller shell form a connector accommodating groove for accommodating electrical connector.

[0013] Further, the domain controller shell comprises a domain controller shell body and a side plate; the domain controller shell body and the side plate are in a split structure, the side plate is arranged on a side of the domain controller shell body corresponding to the joint accommodating groove, and a plurality of joint openings for electrical joints extending out of the domain controller shell are arranged on the side plate.

[0014] Further, a plurality of partition ribs are arranged in the joint accommodating groove.

[0015] Further, the cavity inner bottom of the domain controller shell is further provided with a positioning cylindrical protrusion for clamping a circular positioning hole on the lower PCBA plate.

[0016] Beneficial effects: the domain controller double-layer PCBA plate fixing structure disclosed by the utility model has a supporting boss arranged on the cavity inner bottom of the domain controller shell for supporting the lower PCBA plate, and the upper and lower PCBA plates are supported and fixed by the supporting column, so that the structure in the domain controller shell is simplified, the processing and manufacturing of the domain controller mold are facilitated, the space occupied by the supporting boss is reduced, the PCBA plate is simple in type and easy to process, and the domain controller is convenient to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 It is the axial view of the domain controller double-layer PCBA plate fixing structure disclosed by the utility model;

[0019] Figure 2 It is the axial view of the domain controller shell of the domain controller double-layer PCBA plate fixing structure disclosed by the utility model;

[0020] Figure 3 It is the structural view of the supporting column disclosed by the utility model;

[0021] Figure 4 It is the schematic view of the domain controller shell of the domain controller double-layer PCBA plate fixing structure disclosed by the utility model after installing the lower PCBA plate;

[0022] Figure 5The utility model discloses a domain controller double -deck PCBA board fixed structure domain controller casing's first direction schematic drawing after installing upper PCBA board in the middle

[0023] Figure 6 The utility model discloses a domain controller double -deck PCBA board fixed structure domain controller casing's second direction schematic drawing after installing upper PCBA board in the middle

[0024] Figure 7 The utility model discloses a domain controller double -deck PCBA board fixed structure's domain controller casing's structure schematic drawing in the prior art;

[0025] Figure 8 The utility model discloses a domain controller double -deck PCBA board fixed structure's domain controller casing and lower PCBA board's schematic drawing after installing;

[0026] Figure 9 The utility model discloses a domain controller double -deck PCBA board fixed structure's domain controller casing and upper and lower PCBA board's schematic drawing after installing.

[0027] In the drawing: 1, domain controller casing;10, lower PCBA board support boss;11, boss screw hole;12, strip locating column;120, strip clamping part;121, cylindrical clamping part;13, joint accommodating groove;14, domain controller casing main body;15, side plate;150, joint opening;16, partition rib plate;17, locating cylindrical boss;18, double -deck platform structure;180, first boss;181, second boss;2, domain controller cover plate;3, lower PCBA board;30, strip locating groove;4, upper PCBA board;40, circular locating hole;5, support column;50, outer thread fixed part;51, support column screw hole;6, electrical joint. DETAILED DESCRIPTION

[0028] In order to make the utility model embodiment's purpose, technical scheme and advantage more clear, below will combine the drawing in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is the part embodiment of the utility model, not all embodiments. Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making the creative labor are within the range of the utility model protection.

[0029] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 And Figure 6As shown, the utility model discloses a domain controller double -deck PCBA board fixed structure, including domain controller casing 1 and domain controller cover plate 2, the cavity bottom of domain controller casing 1 is equipped with a week for the lower layer PCBA board support boss 10 that supports lower layer PCBA board 3, be equipped with the boss screw hole 11 for the fixed lower layer PCBA board 3 on lower layer PCBA board support boss 10,

[0030] Still include support column 5, the lower end of support column 5 is equipped with the external thread fixed part 50 for passing through the through -hole on lower layer PCBA board 3 and with boss screw hole 11 screw connection to fix lower layer PCBA board 3 on lower layer PCBA board support boss 10, the upper end of support column 5 is equipped with the support column screw hole 51 for the upper layer PCBA board 4 on the upper end surface of support column 5 through screw fixed in the upper end surface of support column 5,

[0031] The inner side wall of domain controller casing 1 is also equipped with strip locating column 12, and the strip locating column 12 includes a strip clamping portion 120 for clamping with a strip locating groove 30 on the lower layer PCBA board 3 and a column clamping portion 121 located at the upper end of the strip clamping portion 120 for clamping with a circular locating hole 40 on the upper layer PCBA board 4.

[0032] Specifically, as Figure 1 shown, the domain controller casing and the domain controller cover plate in the present application are square structures, the domain controller casing is provided with a receiving cavity, the outer surface of the domain controller casing is provided with a reinforcing rib structure for increasing the strength of the casing, in order to improve the strength of the domain controller casing, the reinforcing rib structure can be provided with multiple groups and arranged in multiple directions, the domain controller cover plate can be buckled at the opening of the domain controller casing to form a closed cavity structure, and the closed cavity structure is used for mounting a PCBA board, as Figure 2 shown, the cavity bottom of the domain controller casing protrudes towards the inside of the cavity to form a lower layer PCBA board support boss for supporting the lower layer PCBA board, and the boss screw hole is machined on the lower layer PCBA board support boss, when the PCBA board is installed in the domain controller casing, the lower layer PCBA board is placed on the lower layer PCBA board support boss, the support boss can support the lower layer PCBA board in the domain controller casing, the through hole on the lower layer PCBA board is opposite to the boss screw hole, and then the external thread fixing part at the lower end of the support column passes through the through hole on the lower layer PCBA board and is screw-connected with the boss screw hole, so as to fix the lower layer PCBA board on the lower layer PCBA board support boss, as Figure 3As shown, the main body of the support column is a hexagonal structure to facilitate clamping and tightening connection with the threaded hole. The number of support columns is set according to the needs. In the figure, the number of support columns is 9, which are arranged in sequence in the circumferential direction to ensure that the PCBA board is installed firmly. The upper end surface of the support column is used to support the upper layer PCBA board, and the upper end of the support column is provided with a support column threaded hole. When the upper layer PCBA board is placed on the support column, the through hole of the upper layer PCBA board corresponds to the support column threaded hole, and the screw passes through the through hole of the upper layer PCBA board to connect with the support column threaded hole, thereby fixing the upper layer PCBA board. Since the lower layer PCBA board support boss is arranged to support the lower layer PCBA board, the support column structure is used to fix the lower layer PCBA board and support and fix the upper layer PCBA board, so that only a protruding structure needs to be formed in the cavity bottom of the domain controller shell near the side edge to the cavity interior to form the lower layer PCBA board support boss. The support boss is integrated with the bottom cavity, which simplifies the internal structure of the cavity, facilitates the processing of the mold, and also facilitates the formation of the domain controller shell structure through the mold. At the same time, the inner side wall of the domain controller shell in the present application is also provided with a strip-shaped positioning column structure, which includes a strip-shaped clamping part and a column-shaped clamping part located at the upper end of the strip-shaped clamping part. When the lower layer PCBA board is installed, the strip-shaped positioning slot of the lower layer PCBA board (the edge of the PCBA board is generally processed to have an opening structure to form a positioning slot) can be clamped with the strip-shaped clamping part, thereby ensuring that the lower layer PCBA board is positioned when it is installed in the domain controller shell, so that the through hole on the lower layer PCBA board corresponds to the boss threaded hole, thereby facilitating the connection between the support column fixing part and the boss threaded hole. At the same time, the column-shaped clamping part at the upper end of the strip-shaped positioning column can make the column-shaped clamping part inserted into the circular positioning hole of the upper layer PCBA board when the upper layer PCBA board is placed on the upper end surface of the support column. The column-shaped clamping part and the circular positioning hole can effectively realize the horizontal positioning of the upper layer PCBA board, so that when the upper layer PCBA board is placed on the support column, the through hole thereon corresponds to the support column threaded hole, and the screw passes through the through hole and connects with the support column threaded hole. That is, the strip-shaped positioning column in the present application can not only realize the left-right positioning of the lower layer PCBA board, but also the column-shaped clamping part at the upper part can realize the positioning of the upper layer PCBA board in the front, back, left and right four directions, which is convenient for assembly and improves the installation efficiency.

[0033] Further, the support column 5 is a copper stud. The copper stud structure not only facilitates processing, but also has high strength, ensuring its service life.

[0034] Further, the support column 5 is in electrical contact with the ground layer of the PCBA board. Specifically, a copper foil layer is arranged at the through hole of the PCBA board, and the copper foil layer is connected with the copper foil layer of the PCBA board. When the PCBA board is fixed by the copper stud, the copper stud is in electrical connection with the ground layer of the PCBA board, thereby further improving the grounding performance of the PCBA board and improving the anti-interference capability thereof.

[0035] Further, one side of the lower PCBA board support boss 10 and the inner side wall of the corresponding side of the domain controller shell 1 form a joint accommodating groove 13 for accommodating the electrical joint 6.

[0036] Specifically, in the present application, the support boss protrudes inwardly into the cavity, and a reinforcing rib structure is arranged on the outer side of the domain controller shell. In order to fully utilize the inner space of the shell and reduce the volume thereof, a joint accommodating groove for accommodating the electrical joint is formed between one side of the lower PCBA board support boss and the inner side wall of the corresponding side of the domain controller shell, and no reinforcing rib structure is arranged at the position corresponding to the joint accommodating groove on the outer side of the shell, so that when the lower PCBA board is placed on the support boss, various electrical joints on the lower PCBA board can be placed in the joint accommodating groove without changing the thickness of the domain controller shell and increasing the height of the support boss.

[0037] Further, the domain controller shell 1 comprises a domain controller shell body 14 and a side plate 15. The domain controller shell body 14 and the side plate 15 are in a split structure, and the side plate 15 is arranged on the side of the domain controller shell body 14 corresponding to the joint accommodating groove 13. The side plate 15 is provided with a plurality of joint openings 150 for the electrical joint 6 to extend out of the domain controller shell.

[0038] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , the domain controller shell comprises a domain controller shell body and a side plate. The domain controller shell comprises a bottom plate and four side plates arranged on the four edges of the bottom plate. Three side plates are integrally formed with the bottom plate to form the domain controller shell body, and the other side plate is separately processed and formed. The side plate is fixed to the domain controller shell body by screws or the like. The separately formed side plate is arranged on the side provided with the joint accommodating groove, and the joint opening is processed on the side plate. During the installation of the lower PCBA board in the domain controller shell, the side plate is not connected to the domain controller shell body. After the lower PCBA board is installed in the domain controller shell, the electrical joint is placed in the joint accommodating groove. Then, the side plate is installed on the domain controller shell body. At this time, the end of the electrical joint extends out of the joint opening, so as to facilitate the insertion of various electrical joints. Meanwhile, the domain controller shell body and the side plate are in a split structure, which facilitates the installation of the upper and lower PCBA boards.

[0039] Further, the joint accommodating groove 13 is provided with a plurality of partitioning ribs 16.

[0040] Further, the inner bottom of the cavity of the domain controller shell 1 is further provided with a positioning cylindrical protrusion 17 for clamping with the circular positioning hole on the lower PCBA board 3, and the positioning cylindrical protrusion can ensure the quick and accurate positioning of the lower PCBA board, thereby facilitating the fixation through the support column (copper stud).

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A domain controller double-layer PCBA board fixing structure, comprising a domain controller shell and a domain controller cover plate, characterized in that: The cavity bottom of the domain controller shell is circumferentially provided with a lower PCBA plate support boss for supporting the lower PCBA plate, and the lower PCBA plate support boss is provided with a boss threaded hole for fixing the lower PCBA plate; Further comprising a support column, the lower end of the support column is provided with an external thread fixing part for penetrating through the through hole on the lower PCBA plate and being threadedly connected with the boss threaded hole to fix the lower PCBA plate on the lower PCBA plate support boss, and the upper end of the support column is provided with a support column threaded hole for fixing the upper PCBA plate placed on the upper end surface of the support column on the upper end surface of the support column through a screw; The inner side wall of the domain controller shell is further provided with a strip-shaped positioning column, the strip-shaped positioning column comprises a strip-shaped clamping part for clamping with a strip-shaped positioning groove on the lower PCBA plate and a column-shaped clamping part located at the upper end of the strip-shaped clamping part for clamping with a circular positioning hole on the upper PCBA plate.

2. The domain controller double-layer PCBA board fixing structure according to claim 1, characterized in that: The support column is a copper stud.

3. The domain controller double-layer PCBA board fixing structure according to claim 2, characterized in that: The support column is in electrical contact with the grounding layer of the PCBA plate.

4. The dual-layer PCBA board fixing structure of any one of claims 1 to 3, characterized in that: One side of the lower PCBA plate support boss and the inner side wall of the corresponding side of the domain controller shell form a connector accommodating groove for accommodating an electrical connector.

5. The domain controller double-layer PCBA board fixing structure according to claim 4, characterized in that: The domain controller shell comprises a domain controller shell body and a side plate; the domain controller shell body and the side plate are in a split structure, the side plate is arranged on the side of the domain controller shell body corresponding to the side provided with the connector accommodating groove, and the side plate is provided with a plurality of connector openings for the electrical connector to extend out of the domain controller shell.

6. The domain controller double-layer PCBA board fixing structure according to claim 5, characterized in that: The connector accommodating groove is provided with a plurality of partition rib plates.

7. The domain controller double-layer PCBA board fixing structure according to claim 1, characterized in that: The cavity bottom of the domain controller shell is further provided with a positioning cylindrical boss for clamping with a circular positioning hole on the lower PCBA plate.

Images