A reinforced PCB

Abstract

This utility model relates to the field of PCB board technology and discloses a reinforced PCB board, including a PCB board body. Reinforcing components for reinforcing the PCB board body are provided on both the outer wall and bottom surface of the PCB board body. The reinforcing components include metal frame members disposed on the outer wall of the PCB board body. This utility model, by providing metal frame members at the outer edge of the PCB board body, suppresses warping of the PCB board caused by thermal stress or mechanical vibration. The rounded corners of the PCB board body avoid stress concentration at right angles, reducing the risk of corner cracking. Arc-shaped support springs are disposed below large-volume components, absorbing the dynamic load generated by the component's mass inertia under vibration or impact conditions through their elastic deformation, reducing the peak impact stress transmitted to the PCB board body, and preventing solder joint fatigue cracking. Thus, targeted additional reinforcement of the local structure of the PCB board body is provided from the surface of the PCB board body, ensuring the overall strength of the PCB board body.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and in particular to a reinforced PCB board. Background Technology

[0002] A PCB, also known as a printed circuit board, is a provider of electrical connections for electronic components. The term "PCB" is often used to refer to printed circuit boards, rather than simply "PCB board." Its development has a history of over 100 years. Its design primarily involves layout design. The main advantages of using PCBs are significantly reduced wiring and assembly errors, and improved automation and productivity.

[0003] An existing novel reinforced circuit board (publication number: CN207505217U) has at least the following drawbacks: the device enhances the strength of the PCB board substrate and strengthens the PCB board, but it does not set up a reinforcement mechanism according to the distribution of components on the PCB board. As a result, in actual use, the PCB board is subjected to vibration from the external environment, and the stress exerted on the PCB board by the large-volume components due to inertia is prone to cause fatigue cracking of the solder joints with slight bending of the PCB board as a whole. Therefore, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a reinforced PCB board.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A reinforced PCB board includes a PCB board body. The outer wall and bottom surface of the PCB board body are provided with reinforcement components for reinforcing the PCB board body. The reinforcement components include a metal frame disposed on the outer wall of the PCB board body. The outer wall edge of the PCB board body is sleeved and fixed inside the metal frame. The four corners of the outer wall of the PCB board body and the metal frame are rounded. Several support springs are fixed on the bottom surface of the PCB board body below the large-volume components. The support springs are arc-shaped.

[0007] As a further embodiment of this utility model, two adjacent support springs are symmetrically arranged, and an X-shaped base is fixed to the bottom surface of the PCB board body, with the X-shaped base being internally fixed to the metal side frame.

[0008] As a further embodiment of this utility model, support columns are fixed at the four corners of the bottom surface of the metal frame, and the height of the support columns is less than the height of the support springs.

[0009] As a further embodiment of this utility model, a plurality of heat dissipation micro-holes are provided on the top surface of the PCB board body, and a sleeve is fixedly fitted inside the heat dissipation micro-holes.

[0010] As a further embodiment of this utility model, mounting holes are provided on the top surface of the PCB board body near the four corners, and reinforcing sleeves are fixedly fitted inside the mounting holes.

[0011] As a further embodiment of this invention, a shock-absorbing rubber pad is fixed to the bottom surface of the support column.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting metal frame at the outer edge of the PCB board body, a "frame-like" reinforcement is formed to suppress the warping of the PCB board caused by thermal stress or mechanical vibration. The rounded corners of the PCB board body avoid stress concentration at right angles and reduce the risk of corner cracking. The arc-shaped support spring is set under the large-volume components. Through its elastic deformation, it absorbs the dynamic load generated by the mass inertia of the components under vibration or impact, reduces the peak impact stress transmitted to the PCB board body, and avoids fatigue cracking of solder joints. In this way, additional reinforcement is carried out on the local structure of the PCB board body from the surface of the board body to ensure the overall strength of the PCB board body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the top three-dimensional structure of a reinforced PCB board proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the bottom three-dimensional structure of a reinforced PCB board proposed in this utility model;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of the partial three-dimensional structure of A in the middle;

[0017] Figure 4 for Figure 2 A magnified schematic diagram of the partial three-dimensional structure of B.

[0018] In the diagram: 1. PCB board body; 2. Metal frame; 201. Support spring; 202. X-shaped base; 3. Support column; 4. Heat dissipation micro-holes; 401. Sleeve; 5. Mounting hole; 501. Reinforcing sleeve; 6. Shock-absorbing rubber pad. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-4 As shown, a reinforced PCB board includes a PCB board body 1. Reinforcing components for reinforcing the PCB board body 1 are provided on both the outer wall and bottom surface of the PCB board body 1. The reinforcing components include a metal frame 2 disposed on the outer wall of the PCB board body 1. The outer edge of the PCB board body 1 is sleeved and fixed inside the metal frame 2. The four corners of the outer walls of the PCB board body 1 and the metal frame 2 are rounded. Several support springs 201 are fixed below large-volume components on the bottom surface of the PCB board body 1. The support springs 201 have an arc-shaped structure and are positioned at the outer edge of the PCB board body 1. The metal frame 2 forms a "frame-like" reinforcement to suppress warping of the PCB board caused by thermal stress or mechanical vibration. The rounded corners of the PCB board body 1 avoid stress concentration at right angles and reduce the risk of corner cracking. The arc-shaped support spring 201 is set under the large-volume components. Through its elastic deformation, it absorbs the dynamic load generated by the mass inertia of the components under vibration or impact, reduces the peak impact stress transmitted to the PCB board body 1, and avoids fatigue cracking of the solder joints. In this way, it provides targeted additional reinforcement to the local structure of the PCB board body 1 from the board surface, ensuring the overall strength of the PCB board body 1.

[0023] like Figures 2-4As shown, in this embodiment, the two adjacent support springs 201 are symmetrically arranged, and an X-shaped base frame 202 is fixed on the bottom surface of the PCB board body 1. The X-shaped base frame 202 is fixed to the inside of the metal side frame 2. By setting the X-shaped base frame 202 as a cross reinforcing rib, the torsional stiffness of the PCB is significantly improved to prevent the separation between the layers of the multilayer board.

[0024] like Figures 2-4 As shown in this embodiment, support columns 3 are fixed at the four corners of the bottom surface of the metal frame 2. The height of the support columns 3 is less than the height of the support springs 201. The support columns 3 serve as the main load-bearing fulcrums. Their height is lower than that of the support springs 201, ensuring that the support springs 201 make priority contact with the bottom surface of the chassis when the PCB is installed. The impact energy is absorbed through elastic deformation to avoid hard contact damage.

[0025] like Figures 2-4 As shown in this embodiment, the top surface of the PCB board body 1 is provided with a plurality of heat dissipation microholes 4. A sleeve 401 is fixedly fitted inside the heat dissipation microholes 4. The sleeve 401 provides a low thermal resistance path, and the heat of the components is quickly conducted to the back heat dissipation layer or external heat sink through the microholes. The sleeve 401 can also prevent the microholes from collapsing due to the softening of the resin substrate at high temperatures, ensuring stable long-term heat dissipation performance.

[0026] like Figures 2-4 As shown in this embodiment, mounting holes 5 are provided on the top surface of the PCB board body 1 near the four corners. A reinforcing sleeve 501 is fixedly fitted inside the mounting hole 5. By setting the reinforcing sleeve 501, the shearing force when the screw is tightened is directly borne, so as to avoid the wear of the substrate hole wall of the PCB board body 1 and the resulting loosening of the installation.

[0027] like Figures 2-4 As shown, in this embodiment, the bottom surface of the support column 3 is fixed with a shock-absorbing rubber pad 6, which reduces the vibration energy transmitted to the PCB board body 1 through the vibration energy of the shock-absorbing rubber pad 6.

[0028] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, by setting a metal frame 2 at the outer edge of the PCB board body 1, a "frame-like" reinforcement is formed, which suppresses the warping of the PCB board caused by thermal stress or mechanical vibration. The rounded corners of the PCB board body 1 avoid stress concentration at right angles, reducing the risk of corner cracking. The arc-shaped support spring 201 is set below the large-volume components, and its elastic deformation absorbs the dynamic load generated by the mass inertia of the components under vibration or impact, reducing the peak impact stress transmitted to the PCB board body 1, avoiding fatigue cracking of solder joints, and thus providing targeted additional reinforcement to the local structure of the PCB board body 1 from the board surface, ensuring the overall strength of the PCB board body 1. By setting X The shaped base frame 202 acts as a cross stiffener, significantly improving the torsional stiffness of the PCB and preventing separation between multilayer boards. The support column 3 serves as the main load-bearing support point, and its height is lower than that of the support spring 201, ensuring that the support spring 201 makes priority contact with the bottom surface of the chassis during PCB installation. It absorbs impact energy through elastic deformation, avoiding hard contact damage. The sleeve 401 provides a low thermal resistance path, allowing the heat from the components to be quickly conducted to the back heat dissipation layer or external heat sink through the micro-holes. The sleeve 401 can also prevent the micro-holes from collapsing due to the softening of the resin substrate at high temperatures, ensuring stable long-term heat dissipation performance. The reinforcement sleeve 501 directly bears the shear force when the screws are tightened, preventing the substrate hole wall of the PCB body 1 from being worn and causing loosening during installation. The vibration energy is reduced by the vibration energy transmitted to the PCB body 1 through the shock-absorbing rubber pad 6.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A reinforced PCB board, comprising a PCB board body (1), characterized in that, The outer wall and bottom surface of the PCB board body (1) are provided with reinforcement components for reinforcing the PCB board body (1). The reinforcement components include a metal frame (2) set on the outer wall of the PCB board body (1). The outer wall edge of the PCB board body (1) is sleeved and fixed inside the metal frame (2). The four corners of the outer wall of the PCB board body (1) and the metal frame (2) are rounded. Several support springs (201) are fixed on the bottom surface of the PCB board body (1) corresponding to the large volume components. The support springs (201) are arc-shaped.

2. The reinforced PCB board according to claim 1, characterized in that, The two adjacent support springs (201) are symmetrically arranged, and an X-shaped base frame (202) is fixed on the bottom surface of the PCB board body (1). The X-shaped base frame (202) is fixed to the inside of the metal side frame (2).

3. A reinforced PCB board according to claim 2, characterized in that, The metal frame (2) has four corner supports (3) fixed at the bottom. The height of the support supports (3) is less than the height of the support spring (201).

4. A reinforced PCB board according to claim 3, characterized in that, The top surface of the PCB board body (1) is provided with several heat dissipation micro-holes (4), and a sleeve (401) is fixedly fitted inside the heat dissipation micro-holes (4).

5. A reinforced PCB board according to claim 4, characterized in that, Mounting holes (5) are provided on the top surface of the PCB board body (1) near the four corners, and a reinforcing sleeve (501) is fixedly fitted inside the mounting holes (5).

6. A reinforced PCB board according to claim 5, characterized in that, The bottom surface of the support column (3) is fixed with a shock-absorbing rubber pad (6).

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