Circuit board assembly and motor controller

Abstract

The application relates to the technical field of circuit boards, and provides a circuit board assembly and a motor controller. The circuit board assembly comprises: at least two circuit boards arranged side by side, the circuit boards being configured to be fixed to a base member through fasteners; and an auxiliary fixing structure comprising: an auxiliary fixing part arranged on at least one of the two adjacent circuit boards; and a fixing connecting piece comprising a first connecting part and a second connecting part and connected between the two adjacent circuit boards, and in the two adjacent circuit boards: the auxiliary fixing part of one circuit board is fixedly connected with the first connecting part of the fixing connecting piece; and one fastener on the other circuit board is matched with the second connecting part of the fixing connecting piece, so that the fixing connecting piece and the circuit board share one fastener to be fixed to the base member. The application sets the fixing connecting piece as a bridging structure between the adjacent circuit boards, adds auxiliary fixing points to the circuit boards, and effectively solves the problem of poor fixing stability caused by insufficient mounting points.

Description

Technical Field

[0001] This application relates to the field of circuit board technology, and in particular to a circuit board assembly and a motor controller. Background Technology

[0002] In the design of current compact electronic devices (such as dual-motor controllers), internal space is typically extremely limited. Due to the constraints of the internal space layout, there are often insufficient independent mounting points for multiple circuit boards arranged side-by-side. This can easily lead to circuit boards being unstable due to a lack of mounting points, affecting the overall structural stability and making them prone to component damage or connection failure under vibration.

[0003] Traditional reinforcement methods may increase structural complexity and cost, or be difficult to implement due to space constraints. Therefore, ensuring the stability of circuit boards within limited space has become an urgent problem to be solved. Utility Model Content

[0004] Based on this, the present invention provides a circuit board assembly and a motor controller to solve the problem of poor fixation stability caused by insufficient mounting points in existing circuits.

[0005] This utility model provides a circuit board assembly, comprising: At least two circuit boards arranged side by side, the circuit boards being configured to be fixed to a base component by a plurality of fasteners; The auxiliary fixing structure includes: An auxiliary fixing part is disposed on at least one of two adjacent circuit boards; A fixing connector, comprising a first connecting portion and a second connecting portion, is connected between two adjacent circuit boards, and in the two adjacent circuit boards: The auxiliary fixing part of one of the circuit boards is fixedly connected to the first connecting part of the fixing connector; One of the fasteners on the other circuit board engages with the second connection portion of the fixing connector, such that the fixing connector and the circuit board share a fastener to be fixed to the base component.

[0006] In one embodiment, the first connecting part and the auxiliary fixing part are detachably snap-fit ​​connected.

[0007] In one embodiment, one of the first connecting part and the auxiliary fixing part is a snap-fit ​​protrusion, and the other is a snap-fit ​​groove or snap-fit ​​hole that snaps into the snap-fit ​​protrusion.

[0008] In one embodiment, the first connecting part is a claw, and the auxiliary fixing part is a snap-fit ​​hole that is interference-fitted with the claw.

[0009] In one embodiment, the fastener is a bolt, the second connecting part is a through hole, and the fastener passes through the through hole and the corresponding mounting hole on the circuit board in sequence to lock with the base component.

[0010] In one embodiment, except for the fastener that mates with the fixed connector, all other fasteners are provided with gaskets. The thickness and material of the fixing connector are the same as those of the gasket, so that the fixing connector also functions as a gasket at the fastener it mates with.

[0011] In one embodiment, the fixing connector further includes a bridging portion connected between the first connecting portion and the second connecting portion, the bridging portion being configured to compensate for positional deviations between auxiliary fixing portions and corresponding fasteners of two adjacent circuit boards.

[0012] In one embodiment, the number of fixed connectors is two or more, and they are arranged sequentially at intervals on adjacent sides of the two circuit boards.

[0013] In one embodiment, the shapes of adjacent edge sides of two adjacent circuit boards fit each other.

[0014] On the other hand, the present invention also provides a motor controller, which includes the circuit board assembly of any of the above embodiments.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects: The aforementioned circuit board assembly bridges adjacent circuit boards via a fixing connector, which acts as a "structural bridge," allowing the fixing force required by one circuit board to be transferred and shared to an existing fixing point on the other circuit board. This design provides reliable additional fixing support for the circuit board without requiring additional mounting holes in the base components, significantly optimizing layout utilization in compact spaces and effectively solving the problem of insufficient circuit board mounting points due to space constraints.

[0016] Meanwhile, since the second connecting part of the fixed connector directly uses the existing fasteners on another circuit board for fixation, it achieves ingenious reuse and integration of the existing installation structure. It is not only ingenious in concept and simple in structure, but also achieves multiple technical effects such as space optimization, structural reinforcement and convenient assembly, and has high practical value and promotion prospects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the circuit board assembly assembled to the base component in one embodiment; Figure 2 This is a schematic diagram of the circuit board assembly in one embodiment; Figure 3 This is a schematic diagram of a circuit board assembly equipped with fasteners in one embodiment; Figure 4 This is a schematic diagram of the structure of the auxiliary fixing structure of the circuit board assembly after disassembly in one embodiment.

[0018] The reference numerals in the accompanying drawings include: 100 - Circuit board; 110 - First circuit board; 111 - First mounting hole; 120 - Second circuit board; 121 - Second mounting hole; 200 - Fastener; 210 - First fastener; 220 - Second fastener; 300 - Basic components; 400 - Auxiliary fixing structure; 410 - Fixing connector; 411 - First connecting part; 412 - Second connecting part; 413 - Bridging part; 420 - Auxiliary fixing part. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0020] As described in the background section, in electronic devices with two or more circuit boards, the internal space of the housing is usually limited, making it difficult to provide a sufficient number of independent mounting points for each circuit board. This situation can easily lead to problems with the circuit boards not being securely mounted due to insufficient fixation, which not only affects the stability of the overall structure, but may also further lead to reliability risks such as component damage or electrical connection failure under environments such as vibration and impact.

[0021] To address the aforementioned problems, this utility model provides a circuit board assembly. This assembly uses a fixing connector 410 as a bridging structure between two circuit boards 100, thereby adding auxiliary fixing points to the circuit boards 100 and effectively solving the problem of poor stability of the circuit boards 100 due to insufficient mounting points.

[0022] For specific details, please refer to... Figures 1 to 4 As shown, the circuit board assembly of this utility model embodiment mainly includes: Two or more circuit boards 100 are configured to be fixed to a base member 300 by a plurality of fasteners 200. The auxiliary fixing structure 400 includes: An auxiliary fixing part 420 is disposed on at least one of two adjacent circuit boards 100; The fixing connector 410 includes a first connecting portion 411 and a second connecting portion 412. The fixing connector 410 is connected between two adjacent circuit boards 100, and in the two adjacent circuit boards 100: An auxiliary fixing part 420 of a circuit board 100 is fixedly connected to the first connecting part 411 of a fixing connector 410; One of the fasteners 200 on another circuit board 100 cooperates with the second connection portion 412 of the fixing connector 410, so that the fixing connector 410 and the circuit board 100 share a fastener 200 to be fixed to the base component 300.

[0023] In the above embodiments of this utility model, the fixing connector 410 acts as a bridging element between two adjacent circuit boards 100, functioning as a "structural bridge." This allows the fixing force required by one circuit board 100 to be transferred and shared to an existing fixing point on the other circuit board 100. This design eliminates the need for additional mounting holes in the base component 300, providing reliable additional fixing support for the circuit board 100. This significantly optimizes the layout utilization in a compact space, effectively solving the problem of insufficient mounting points for the circuit board 100 due to space constraints.

[0024] In addition, this connection structure connects adjacent circuit boards 100 into a whole in a local area, which significantly improves the structural stability and mechanical reliability of the entire circuit board assembly under harsh environments such as vibration and impact, and effectively avoids the problem of shaking or stress concentration caused by insufficient fixing points for individual circuit boards 100.

[0025] Meanwhile, since the second connecting part 412 of the fixed connector 410 directly uses the existing fastener 200 on the other circuit board 100 for fixation, it realizes the ingenious reuse and integration of the existing installation structure. It is not only ingenious in concept and simple in structure, but also achieves multiple technical effects such as space optimization, structural reinforcement and convenient assembly. It has high practical value and promotion prospects.

[0026] For ease of description, two adjacent circuit boards 100 are defined below as the first circuit board 110 and the second circuit board 120, respectively. It should be noted that the terms "first" and "second" in the first circuit board 110 and the second circuit board 120 are only used to distinguish different circuit boards 100 and do not constitute a limitation on the number or order of the circuit boards 100.

[0027] Furthermore, the circuit board assembly of this embodiment may include more than two circuit boards 100, such as three or four. In this case, the above-mentioned definition relationship and connection structure of "first" and "second" can be applied to any group of adjacent and side by side circuit boards 100.

[0028] The following description focuses on two of the circuit boards, "first circuit board 110" and "second circuit board 120," to illustrate their structure and specific cooperation with the fixed connector 410.

[0029] In this embodiment, both the first circuit board 110 and the second circuit board 120 are fixed to the base component 300. For example, see... Figures 1 to 3 The first circuit board 110 is fixed to the base component 300 by a number of first fasteners 210. The specific fixing method can be as follows: the first circuit board 110 is provided with a number of first mounting holes 111 (which can be smooth holes or threaded holes), and the first fasteners 210 are bolts. The first fasteners 210 pass through the first mounting holes 111 and are then threadedly locked with the threaded holes on the base component 300.

[0030] Similarly, the second circuit board 120 is fixed to the base component 300 by a number of second fasteners 220. The specific fixing method can also be bolt connection. Correspondingly, the second circuit board 120 is provided with a number of second mounting holes 121, and the second fasteners 220 are also bolts.

[0031] It should be noted that, in this embodiment, "basic component 300" is a general term for the target carrier on which the circuit board assembly is mounted, and its core function is to provide final support and fixation for the circuit board 100. This component is an external mating structure of the circuit board assembly of this utility model, and its specific form (such as shape, specific mounting hole positions, etc.) is not the inventive point of this utility model. Therefore, this utility model does not limit the basic component 300 to a specific form. For example, in a dual-motor controller, the basic component 300 is the controller housing. Its schematic position and connection relationship can be found in [reference needed]. Figure 1 .

[0032] Further, see Figure 1 In this embodiment, the first circuit board 110 and the second circuit board 120 are fixed to the base component 300 in an adjacent and horizontally side-by-side manner. This layout aims to achieve a compact structure for the electronic device, thereby reducing its overall space occupation. However, it is precisely this compact arrangement that limits the original fixing points available for the first circuit board 110 and / or the second circuit board 120; at the same time, it also results in a small gap between the two circuit boards 100. Based on this small gap, a flat fixing connector 410 can be used to bridge the two, thereby creating an additional effective fixing point for the first circuit board 110.

[0033] For details, see Figure 1 and Figure 4 In this embodiment, the fixing connector 410 can be designed as a plate-shaped component. The main body of the component serves as a bridging part 413, spanning between the first circuit board 110 and the second circuit board 120. One end of the component is provided with a first connecting part 411, and the other end is provided with a second connecting part 412.

[0034] The specific shape of the bridging part 413 can be adapted to the actual relative position of the auxiliary fixing part 420 and the corresponding second fastener 220 on the first circuit board 110 and the second circuit board 120. This utility model does not limit this, and its core is to compensate for the positional deviation between the auxiliary fixing part 420 and the corresponding second fastener 220.

[0035] For example, when there is a height difference between the two circuit boards 100 in the thickness direction, the bridging part 413 can be designed with a step or in an inclined shape so that a corresponding height difference is formed between the first connecting part 411 and the second connecting part 412.

[0036] For example, when the auxiliary fixing part 420 on the first circuit board 110 and the corresponding second fastener 220 on the second circuit board 120 are in the horizontal direction ( Figure 1 When there is misalignment in the width direction of the circuit board 100 shown, the bridging part 413 can be designed as follows: Figure 4 The shape shown has a corresponding offset in this direction, so that the first connecting part 411 and the second connecting part 412 have a corresponding horizontal misalignment.

[0037] Based on the above, regardless of whether there is a height difference, horizontal misalignment, or both between the two circuit boards 100, the three-dimensional shape of the bridging part 413 can be customized to ensure that the two connecting parts can be accurately aligned with the auxiliary fixing part 420 and the fastener 200.

[0038] In this embodiment, the auxiliary fixing part 420 can be disposed on one or both of the first circuit board 110 and the second circuit board 120, and the number of fixing connectors 410 is the same as the number of auxiliary fixing parts 420.

[0039] For example, in one example, the auxiliary fixing part 420 is only provided on the first circuit board 110 (second circuit board 120), then the fixing connector 410 is fixed to the first circuit board 110 (second circuit board 120) by the fastener 200 of the first connecting part 411 and the second connecting part 412. Figure 1 and Figure 4 The illustration shows an implementation scheme in which an auxiliary fixing part 420 is provided only for the first circuit board 110.

[0040] For example, in some embodiments not shown, both the first circuit board 110 and the second circuit board 120 may be provided with auxiliary fixing parts 420, such as one auxiliary fixing part 420 on each of the first circuit board 110 and the second circuit board 120. Correspondingly, there are also two fixing connectors 410. One fixing connector 410 has a first connecting part 411 fixed to the auxiliary fixing part 420 of the first circuit board 110 and a second connecting part 412 fixed to the second fastener 220 of the second circuit board 120; the other fixing connector 410 has a first connecting part 411 fixed to the auxiliary fixing part 420 of the second circuit board 120 and a second connecting part 412 fixed to the first fastener 210 of the first circuit board 110.

[0041] Therefore, the fixing connector 410 provided by this utility model has symmetrical and interchangeable application methods. As a general "structural bridge", the fixing connector 410 does not have a fixed bridging direction. Through flexible configuration, it can provide auxiliary support for the weak areas of the first circuit board 110 and the second circuit board 120 respectively, thereby strengthening the structural rigidity and fixing reliability of the entire circuit board assembly as a whole.

[0042] Accordingly, the number of fixing connectors 410 in this embodiment is not limited to one; it can be set to more depending on the structure of the first circuit board 110 and the second circuit board 120, for example, two, three, four, etc. Figure 1 This example demonstrates an implementation with two fixing connectors 410. By increasing the number of fixing connectors 410, auxiliary fixing points can be added at multiple key locations on the circuit board 100, thereby forming multi-point collaborative support and significantly improving its overall fixing stability and vibration resistance.

[0043] In this embodiment, the first connecting part 411 and the auxiliary fixing part 420 can be fixed by any reliable matching method, such as bolt connection, welding, riveting and snap-fit.

[0044] In this embodiment, a detachable snap-fit ​​method is preferably adopted. This method is easy to assemble and has the ability to be disassembled, which facilitates subsequent repair or replacement of a single circuit board 100.

[0045] In some embodiments, the specific snap-fit ​​structure may be as follows: one of the first connecting part 411 and the auxiliary fixing part 420 is configured as a protruding snap-fit ​​protrusion, and the other is configured as a snap-fit ​​groove or snap-fit ​​hole that matches the snap-fit ​​protrusion. By embedding the snap-fit ​​protrusion into the corresponding snap-fit ​​groove or snap-fit ​​hole, the first connecting part 411 and the auxiliary fixing part 420 can be fixedly connected. The structure is simple and easy to install and remove.

[0046] Further, see Figure 1 In this embodiment, the first connecting part 411 is preferably a claw, which extends along a direction perpendicular to the plate body of the fixed connecting member 410, forming multiple engagement points. Figure 4 (As shown in the diagram, there are four). Correspondingly, the auxiliary fixing part 420 consists of multiple snap-fit ​​holes provided on the first circuit board 110, and the number, arrangement, and shape of the snap-fit ​​holes correspond to the snap-fit ​​claws. This multi-point design effectively ensures the stability and torsional resistance of the snap-fit.

[0047] Furthermore, the claws and the locking holes are fitted with an interference fit to achieve a rigid connection between them, thereby ensuring reliability and overall stability.

[0048] It should be noted that, in this embodiment, the auxiliary fixing part 420 is typically disposed on the edge of the first circuit board 110 and the second circuit board 120 on the same side, and is preferably located in areas where the original fixing points are sparsely or insufficiently distributed, for example... Figure 1 The lower left corner of the first circuit board 110 is shown as a weak fixation area. Thus, by bridging this specific area with the fixing connector 410, targeted auxiliary support can be provided to this area, thereby most effectively improving the overall fixation stability and rigidity of the circuit board assembly.

[0049] In this embodiment, the structure of the second connecting portion 412 matches the type of the selected fastener 200. For example, combined with Figure 4 As shown, in the embodiment where the first fastener 210 and the second fastener 220 are bolts, the second connecting part 412 can be configured as a through hole that mates with the bolt, and the diameter of the through hole can be the same as or similar to the diameter of the mounting holes on the first circuit board 110 and the second circuit board 120.

[0050] Additionally, see Figure 4 The through-hole of the fixing connector 410 is positioned such that when the fixing connector 410 is fixed to one of the circuit boards 100 via the first connecting part 411, its through-hole automatically aligns with a corresponding mounting hole on the other circuit board 100. With this configuration, during assembly, the fastener 200 (bolt) can pass through the through-hole and the aligned mounting hole sequentially, ultimately locking into the threaded hole on the base component 300. Thus, using the same fastener 200, the operation of simultaneously pressing and fixing the fixing connector 410 and the circuit board 100 to the base component 300 can be completed, achieving shared mounting points.

[0051] It should be understood that the first fastener 210 and the second fastener 220 are bolts. In conventional bolted connections, washers are usually required to prevent loosening and distribute pressure. This results in a certain gap between the bolt head and the surface of the circuit board 100. If the fastener 410 is directly installed under these conditions, it will further increase the overall height of the fastening point, potentially causing structural abruptness and even insufficient effective thread engagement length of the bolt, affecting connection reliability.

[0052] Therefore, in some embodiments of this application, the material and thickness of the fixing connector 410 as a whole, or at least a portion thereof near the second connection 412, may be designed to be the same as the material and thickness of the original washer of the fastener 200 (bolt). The material and thickness of the fixing connector 410 are not specifically limited here, as long as they are consistent with the original washer. With this configuration, the original independent washer at that location can be directly eliminated during assembly, and the body of the fixing connector 410 can then serve as the washer. This design, while ensuring bolt anti-loosening and pressure relief effects, perfectly avoids the problem of accumulated installation height caused by adding connectors, ensuring connection reliability while maintaining the overall compactness and flatness of the structure.

[0053] Furthermore, in some embodiments, the shapes of the edges of two adjacent circuit boards 100 conform to each other. For example, the edges of the two circuit boards 100 are parallel straight lines; for example, participating in Figure 2 In a specific example, the edges of the first circuit board 110 and the second circuit board 120 have horizontally protruding portions in some areas, and the edges of the second circuit board 120 and the first circuit board 110 are set to be horizontally recessed. The contours of the horizontally protruding portions and the horizontally recessed portions are matched, which ensures that the shapes of the edge sides of the two circuit boards 100 fit together and avoids structural interference between the two circuit boards 100.

[0054] On the other hand, this utility model embodiment also provides a motor controller, which includes the circuit board assembly of any of the above embodiments.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] It should be noted that the illustrations provided in this embodiment are merely schematic representations of the basic concept of this utility model. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and to enable them to understand and read the content disclosed herein. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed herein.

[0057] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A circuit board assembly, characterized in that, include: At least two circuit boards (100) arranged side by side, the circuit boards (100) being configured to be fixed to a base member (300) by a plurality of fasteners (200); The auxiliary fixing structure (400) includes: An auxiliary fixing part (420) is disposed on at least one of two adjacent circuit boards (100); A fixing connector (410) includes a first connecting portion (411) and a second connecting portion (412). The fixing connector (410) is connected between two adjacent circuit boards (100), and in the two adjacent circuit boards (100): The auxiliary fixing part (420) of one of the circuit boards (100) is fixedly connected to the first connecting part (411) of the fixing connector (410); One of the fasteners (200) on another circuit board (100) engages with the second connection (412) of the fixing connector (410) so that the fixing connector (410) and the circuit board (100) share a fastener (200) to be fixed to the base member (300).

2. The circuit board assembly according to claim 1, characterized in that, The first connecting part (411) and the auxiliary fixing part (420) are detachably snap-fit ​​connected.

3. The circuit board assembly according to claim 2, characterized in that, One of the first connecting part (411) and the auxiliary fixing part (420) is a snap-fit ​​protrusion, and the other is a snap-fit ​​groove or snap-fit ​​hole that snaps into the snap-fit ​​protrusion.

4. The circuit board assembly according to claim 3, characterized in that, The first connecting part (411) is a claw, and the auxiliary fixing part (420) is a snap-fit ​​hole that is interference-fitted with the claw.

5. The circuit board assembly according to claim 1, characterized in that, The fastener (200) is a bolt, and the second connecting part (412) is a through hole. The fastener (200) passes through the through hole and the corresponding mounting hole on the circuit board (100) in sequence and locks with the base component (300).

6. The circuit board assembly according to claim 5, characterized in that, Except for the fasteners (200) that cooperate with the fixed connector (410), all other fasteners (200) are provided with washers; The thickness and material of the fixing connector (410) are the same as those of the gasket, so that the fixing connector (410) also functions as a gasket at the fastener (200) it mates with.

7. The circuit board assembly according to claim 1, characterized in that, The fixing connector (410) further includes a bridging portion (413) connecting the first connecting portion (411) and the second connecting portion (412), the bridging portion (413) being configured to compensate for positional deviations between the auxiliary fixing portions (420) and the corresponding fasteners (200) of two adjacent circuit boards (100).

8. The circuit board assembly according to claim 1, characterized in that, The number of fixed connectors (410) is two or more, and they are spaced apart on adjacent sides of the two circuit boards (100).

9. The circuit board assembly according to claim 1, characterized in that, The shapes of adjacent edge sides of two adjacent circuit boards (100) fit each other.

10. A motor controller, characterized in that, Includes the circuit board assembly as described in any one of claims 1-8.

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