A robust PCBA structure and server

Abstract

This utility model discloses a robustly installed PCBA structure and server. The robustly installed PCBA structure includes a PCBA board and mounting screws. The PCBA board has mounting holes. Each mounting screw, from one end to the other, includes a threaded section, a tapered guide section, and a screw head. The tapered guide section passes through the mounting hole to secure the PCBA board to the server. The threaded section is used for threaded connection to the server. The tapered guide section is used to push and correct the position of the PCBA board. The screw head presses against the PCBA board. An elastic sealing ring is fitted around the outer periphery of the mounting screw, located between the outer periphery of the mounting screw and the inner periphery of the mounting hole. This utility model facilitates installation and ensures stability after installation.

Description

Technical Field

[0001] This utility model relates to the field of PCBA installation technology, and in particular to a stable PCBA structure and server. Background Technology

[0002] PCBA (Printed Circuit Board Assembly) boards, serving as the carriers of core electronic components in servers, are typically mounted within the server chassis or support structure using screws. Currently, PCBA boards are mostly secured to the base or support structure by passing ordinary screws through their mounting holes. This traditional mounting method is simple in structure, low in cost, and widely used in various servers and electronic devices.

[0003] However, in practical use, the structure of ordinary screws does not have a self-positioning function, which causes the mounting holes on the PCBA board to easily shift during installation, making it difficult to accurately install them to the preset centered position. Especially in scenarios where multiple holes are installed simultaneously, deviations in the hole positions can easily lead to uneven stress or board twisting, thereby affecting the overall assembly accuracy and stability.

[0004] Furthermore, the outer diameter of ordinary screws is usually smaller than the inner diameter of the mounting hole, resulting in a certain gap between them. This makes it impossible to achieve a stable fixation without applying preload. To prevent the PCBA board from loosening or shaking due to vibration, thermal expansion and contraction, etc., during long-term equipment operation, it is often necessary to apply a large tightening force to forcibly press the PCBA board. However, this excessive tightening may cause localized stress concentration on the board, leading to structural problems such as solder joint cracking, circuit board deformation or damage, affecting the long-term reliability and service life of the PCBA board. Utility Model Content

[0005] The primary objective of this invention is to provide a robust PCBA structure that facilitates installation and ensures stability after installation.

[0006] Another objective of this invention is to provide a server employing the aforementioned robustly installed PCBA structure.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A robust PCBA structure includes a PCBA board and mounting screws. The PCBA board has mounting holes. Each mounting screw, from one end to the other, includes a threaded section, a tapered guide section, and a screw head. The tapered guide section passes through the mounting holes to secure the PCBA board to a server. The threaded section is used for threaded connection to the server. The tapered guide section is used to push and correct the position of the PCBA board. The screw head is used to press against the PCBA board. An elastic sealing ring is fitted around the outer periphery of the mounting screw, and the elastic sealing ring is located between the outer periphery of the mounting screw and the inner periphery of the mounting hole.

[0009] Preferably, the mounting screw further includes a positioning section, which is cylindrical and corresponds to the inner circumference of the mounting hole, and the elastic sealing ring is sleeved on the outer circumference of the positioning section.

[0010] Preferably, a positioning groove is provided on the outer periphery of the positioning section, the elastic sealing ring is sleeved in the positioning groove, and a portion of the elastic sealing ring extends out of the positioning groove.

[0011] Preferably, the side of the screw head end closest to the positioning section is a plane.

[0012] Preferably, the positioning groove is located between the screw head end and the positioning section.

[0013] Preferably, the elastic sealing ring is located between the screw head end and the positioning section. The elastic sealing ring includes a first ring body and a second ring body connected together. The inner diameters of the first ring body and the second ring body are the same, and the outer diameter of the first ring body is smaller than the outer diameter of the second ring body. The first ring body is located between the positioning section and the inner circumference of the mounting hole, and the second ring body is located between the screw head end and the PCBA board.

[0014] Preferably, the elastic sealing ring is a silicone elastic sealing ring or a rubber elastic sealing ring.

[0015] This utility model also relates to a server, including the aforementioned securely mounted PCBA structure.

[0016] Compared with the prior art, the PCBA structure of this utility model with a stable installation has the following advantages:

[0017] In this invention, during installation, the PCBA board is fixed to the server by passing the mounting screw through the mounting hole and tightening it. During the installation process, the threaded section first passes through the mounting hole, and then, when the inclined guide section reaches the mounting hole, the inclined guide section can push and correct the position of the PCBA board to ensure installation accuracy, improve installation efficiency, and ensure the stability of the PCBA board in the later stages. The threaded section is used for threaded connection to the server. After tightening the mounting screw, the screw head can press on the PCBA board. At the same time, the elastic sealing ring is located between the outer circumference of the mounting screw and the inner circumference of the mounting hole, thereby filling the gap between the mounting screw and the mounting hole. This ensures the stability of the PCBA board's position while preventing the screw head from excessively pressing on the PCBA board, thus reducing the risk of damage to the PCBA board. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the connection between the mounting screws and the PCBA board in an embodiment of this utility model;

[0021] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0022] Figure 5 This is a schematic diagram of the mounting screws according to an embodiment of the present invention.

[0023] In the diagram, 1 represents the PCBA board; 11 represents mounting holes.

[0024] 2. Mounting screw; 21. Threaded section; 22. Inclined guide section; 23. Positioning section; 24. Screw head end; 25. Positioning groove;

[0025] 3. Elastic sealing ring; 31. First ring body; 32. Second ring body. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0027] In the description of this utility model, it should be understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, parts, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts, components, and / or groups thereof. It should be understood that when we say a part is "connected" to another part, it can be directly connected to the other part, or there may be intermediate parts. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0028] like Figures 1 to 5 As shown, this utility model relates to a stable PCBA structure, including a PCBA board 1 and mounting screws 2. The PCBA board 1 has mounting holes 11. The mounting screws 2, from one end to the other, sequentially include a threaded section 21, an inclined guide section 22, and a screw head 24. The inclined guide section 22 is tapered. The mounting screws 2 pass through the mounting holes 11 to fix the PCBA board 1 inside the server. The threaded section 21 is used for threaded connection to the server. The inclined guide section 22 is used to push and correct the position of the PCBA board 1. The screw head 24 is used to press the PCBA board 1. An elastic sealing ring 3 is sleeved on the outer periphery of the mounting screws 2, and the elastic sealing ring 3 is located between the outer periphery of the mounting screws 2 and the inner periphery of the mounting holes 11.

[0029] In this invention, during installation, the PCBA board 1 is fixed to the server by passing the mounting screw 2 through the mounting hole 11 and tightening it. During the installation of the mounting screw 2, the threaded section 21 first passes through the mounting hole 11. Then, when the inclined guide section 22 reaches the mounting hole 11, the inclined guide section 22 can push and correct the position of the PCBA board 1 to ensure installation accuracy, improve installation efficiency, and ensure the stability of the PCBA board 1 in the later stage. The threaded section 21 is used for threaded connection to the server. After tightening the mounting screw 2, the screw head 24 can press on the PCBA board 1. At the same time, the elastic sealing ring 3 is located between the outer periphery of the mounting screw 2 and the inner periphery of the mounting hole 11, thereby filling the gap between the mounting screw 2 and the mounting hole 11. This ensures the stability of the position of the PCBA board 1, while the screw head 24 does not press the PCBA board 1 too tightly, thus preventing damage to the PCBA board 1.

[0030] Preferably, the mounting screw 2 further includes a positioning section 23, which is cylindrical and corresponds to the inner circumference of the mounting hole 11. The elastic sealing ring 3 is sleeved on the outer circumference of the positioning section 23.

[0031] That is, by setting the positioning segment 23, and the positioning segment 23 being cylindrical, it is convenient to set the elastic sealing ring 3. The outer periphery of the positioning segment 23 is adjacent to the inner periphery of the mounting hole 11. Then, the elastic sealing ring 3 fills the space between the outer periphery of the positioning segment 23 and the inner periphery of the mounting hole 11, thereby enhancing the stability of the PCBA board 1 and making it less prone to shaking.

[0032] Furthermore, a positioning groove 25 is provided on the outer periphery of the positioning segment 23, the elastic sealing ring 3 is sleeved in the positioning groove 25, and a portion of the elastic sealing ring 3 extends out of the positioning groove 25.

[0033] The positioning groove 25 is provided to fix the elastic sealing ring 3.

[0034] In this embodiment, the side of the screw head 24 closest to the positioning section 23 is a plane, which increases the contact area between the screw head 24 and the PCBA board 1, thereby further improving the stability of fixing the PCBA board 1.

[0035] In this embodiment, the positioning groove 25 is located between the screw head end 24 and the positioning section 23.

[0036] That is, after the mounting screw 2 is tightened, a portion of the elastic sealing ring 3 is located between the positioning section 23 and the mounting hole 11, and another portion of the elastic sealing ring 3 is located between the screw head end 24 and the PCBA board 1. This helps to further improve the stability of the connection between the mounting screw 2 and the PCBA board 1, and also has a buffering effect, reducing the risk of damage to the PCBA board 1.

[0037] In this embodiment, the elastic sealing ring 3 is located between the screw head end 24 and the positioning section 23. The elastic sealing ring 3 includes a first ring body 31 and a second ring body 32 connected together. The inner diameters of the first ring body 31 and the second ring body 32 are the same, and the outer diameter of the first ring body 31 is smaller than the outer diameter of the second ring body 32. The first ring body 31 is located between the inner circumference of the positioning section 23 and the mounting hole 11, and the second ring body 32 is located between the screw head end 24 and the PCBA board 1.

[0038] The elastic sealing ring 3 includes a first ring 31 and a second ring 32 connected together. After the mounting screw 2 is tightened, the first ring 31 fills and buffers between the positioning section 23 and the inner circumference of the mounting hole 11, and the second ring 32 buffers between the screw head end 24 and the PCBA board 1, thereby enhancing the stability of fixing the PCBA board 1.

[0039] In this embodiment, the elastic sealing ring 3 is a silicone elastic sealing ring 3 or a rubber elastic sealing ring 3, in order to improve the fixing effect on the PCBA circuit board and ensure the buffering effect.

[0040] This utility model also relates to a server, including the aforementioned securely mounted PCBA structure.

[0041] The server of this utility model, by adopting the robustly installed PCBA structure, can ensure the stability of the robustly installed PCBA structure within the server, thereby guaranteeing the normal use of the server.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A ruggedized mounted PCBA structure, characterized by, The device includes a PCBA board and mounting screws. The PCBA board has mounting holes. The mounting screws, from one end to the other, sequentially include a threaded section, a tapered guide section, and a screw head. The tapered guide section passes through the mounting holes to fix the PCBA board inside a server. The threaded section is used for threaded connection to the server. The tapered guide section is used to push and correct the position of the PCBA board. The screw head is used to press against the PCBA board. An elastic sealing ring is fitted around the outer periphery of the mounting screw, and the elastic sealing ring is located between the outer periphery of the mounting screw and the inner periphery of the mounting hole.

2. The ruggedized mounted PCBA structure of claim 1, wherein, The mounting screw also includes a positioning section, which is cylindrical and corresponds to the inner circumference of the mounting hole. The elastic sealing ring is fitted around the outer circumference of the positioning section.

3. The ruggedized mounted PCBA structure of claim 2, wherein, The outer periphery of the positioning section is provided with a positioning groove, the elastic sealing ring is sleeved in the positioning groove, and part of the elastic sealing ring extends out of the positioning groove.

4. The ruggedized mounted PCBA structure of claim 3, wherein, The side of the screw head closest to the positioning section is a plane.

5. The ruggedized mounted PCBA structure of claim 4, wherein, The positioning groove is located between the screw head end and the positioning section.

6. The ruggedized mounted PCBA structure of claim 2, wherein, The elastic sealing ring is located between the screw head end and the positioning section. The elastic sealing ring includes a first ring body and a second ring body connected together. The inner diameters of the first ring body and the second ring body are the same, and the outer diameter of the first ring body is smaller than the outer diameter of the second ring body. The first ring body is located between the positioning section and the inner circumference of the mounting hole, and the second ring body is located between the screw head end and the PCBA board.

7. The ruggedized mounted PCBA structure of claim 1, wherein, The elastic sealing ring is a rubber elastic sealing ring.

8. A server, characterized by Includes the robustly mounted PCBA structure as described in any one of claims 1 to 7.

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