Printed circuit board (PCB) lamination fixing structure

Abstract

The utility model discloses a printed circuit board (PCB) lamination fixing structure, which comprises a first PCB, a second PCB and a lamination supporting column, the first PCB and the second PCB are arranged in an up-and-down lamination mode, the lamination supporting column is connected and supported between the first PCB and the second PCB, the first PCB is provided with a first through hole used for being inserted into one end of the lamination supporting column, and the second PCB is provided with a second through hole used for being inserted into the other end of the lamination supporting column. The second PCB is provided with a first through hole used for being inserted into one end of the lamination supporting column, the second PCB is provided with a second through hole used for being inserted into the other end of the lamination supporting column, the two ends of the lamination supporting column are welded and fixed in the first through hole and the second through hole respectively, and a plurality of electronic elements are fixed to the second PCB and attached to the side edge of the lamination supporting column. The first PCB and the second PCB are welded into a whole through the laminated plate supporting columns, the integral connection greatly enhances the rigidity of the whole structure, and even if encountering external violent impact or vibration interference, stress can be effectively dispersed by means of the powerful supporting of the supporting columns and the dragging effect of stable welding points, and the protection effect of limiting and fixing on electronic elements is also achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of PCB board fixing, specifically relating to a PCB board stacking fixing structure. Background Technology

[0002] Existing electronic components, such as connectors, have high requirements for connection stability on PCBs. Traditional methods mainly rely on simple through-hole insertion or ordinary soldering to fix stacked support structures. These are vulnerable to vibrations during daily operation, transportation bumps, and sudden collisions. Solder joints quickly fatigue and crack due to frequent stress, signal transmission lines are frequently interrupted or have poor contact, and they cannot provide effective protection for electronic components when facing vibration and impact, resulting in poor equipment reliability and affecting service life. Utility Model Content

[0003] The purpose of this utility model is to provide a PCB board stacking and fixing structure to address the above-mentioned problems and solve the problems existing in the prior art.

[0004] This utility model is achieved through the following technical solution: a PCB board stacking and fixing structure, including a first PCB board and a second PCB board stacked on top of each other, and a stacking support column connecting and supporting the first PCB board and the second PCB board. The first PCB board is provided with a first through hole for insertion into one end of the stacking support column, and the second PCB board is provided with a second through hole for insertion into the other end of the stacking support column. The two ends of the stacking support column are respectively welded and fixed in the first through hole and the second through hole. A plurality of electronic components are fixed on the second PCB board, and the electronic components are attached to the side of the stacking support column. The electronic components are connectors.

[0005] Furthermore, the stacked plate support column includes a support body and insertion parts located at both ends of the support body. Both the support body and the insertion parts are cylindrical blocks, and the cylindrical diameter of the insertion parts is smaller than the cylindrical diameter of the support body.

[0006] Furthermore, the support body and the plug-in part are integrally formed.

[0007] Furthermore, both the first and second through holes are provided with metal protrusions on their outer edges away from each other, and the insertion parts at both ends of the stacked plate support column are respectively inserted into the metal protrusions.

[0008] Furthermore, the height of the insertion portion is equal to the height of the metal protrusion ring and the first or second through hole.

[0009] This invention relates to a tin-plated solder joint between the first and second through holes on the first and second PCB boards, respectively, and the stacked board support pillars. This integrated connection significantly enhances the overall structural rigidity. Even when subjected to severe external impacts or vibrations, the strong support of the support pillars and the tensile force of the stable solder joints effectively disperse the stress, preventing relative displacement or wobbling between the PCB boards. This maintains the spacing and relative position between the boards, avoiding damage to the fragile electronic components. Furthermore, by ensuring that the electronic components are closely attached to the sides of the stacked board support pillars, the stability of the microenvironment surrounding the components is effectively guaranteed. This also provides a limiting and fixing protection for the electronic components, preventing pad detachment or poor contact due to severe impacts. This improves the operational reliability of the components under complex operating conditions and extends their service life. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0011] Figure 2 This is a partial structural front view of this utility model.

[0012] The attached figures are labeled as follows:

[0013] 1. First PCB board; 11. First through hole; 2. Second PCB board; 21. Second through hole; 3. Stacked board support column; 31. Support body; 32. Insertion part; 4. Electronic component; 5. Metal protrusion ring. Detailed Implementation

[0014] The present invention will be further illustrated below with reference to specific examples and accompanying drawings.

[0015] like Figures 1-2 As shown, this utility model describes a PCB board stacking and fixing structure, including a first PCB board 1 and a second PCB board 2 stacked on top of each other, and a stacking support column 3 connecting and supporting the first PCB board 1 and the second PCB board 2. The first PCB board 1 is provided with a first through hole 11 for inserting into one end of the stacking support column 3, and the second PCB board 2 is provided with a second through hole 21 for inserting into the other end of the stacking support column 3. The two ends of the stacking support column 3 are respectively welded and fixed in the first through hole 11 and the second through hole 21. A plurality of electronic components 4 are fixed on the second PCB board 2, and the electronic components 4 are attached to the side of the stacking support column 3. The electronic components 4 are connectors.

[0016] The first through-hole 11 and the second through-hole 21 on the first PCB board 1 and the second PCB board 2, respectively, are tin-plated and soldered to the stacked board support column 3, thus welding the first PCB board 1 and the second PCB board 2 into one piece through the stacked board support column 3. This integrated connection greatly enhances the overall structural rigidity. Even when subjected to severe external impact or vibration, the strong support of the support column and the traction effect of the stable solder joint can effectively disperse the force and prevent relative displacement or shaking between the PCB boards, so as to maintain the spacing and relative position relationship between the boards and avoid squeezing damage to the fragile electronic components 4. In addition, by setting the electronic components 4 to be closely attached to the side of the stacked board support column 3, the stability of the microenvironment in which the electronic components 4 are located is effectively guaranteed, and the electronic components 4 also have a limiting and fixing protection effect, avoiding the easy detachment of the solder pads or poor contact due to severe impact, improving the operational reliability of the component under complex working conditions, and extending its service life.

[0017] The stacked plate support column 3 in this embodiment of the utility model includes a support body 31 and insertion parts 32 located at both ends of the support body 31. Both the support body 31 and the insertion parts 32 are cylindrical blocks. The cylindrical diameter of the insertion parts 32 is smaller than that of the support body 31. The smaller diameter of the insertion parts 32 facilitates precise insertion into the first through hole 11 of the first PCB board 1 and the second through hole 21 of the second PCB board 2, reducing the difficulty of insertion and improving assembly efficiency. Even in mass production and rapid assembly processes, it can ensure that operators can quickly align and easily insert the parts, reducing working time. The larger diameter of the support body 31, after insertion, provides strong support by having a larger cross-sectional area and making close contact with the surrounding through holes, enhancing the stability of the connection between PCB boards. When dealing with vibration and impact forces, it effectively disperses stress and prevents board deformation and solder joint cracking caused by excessive local stress.

[0018] Furthermore, the support body 31 and the plug-in part 32 are integrally formed. During the use of the PCB board assembly, when faced with complex external force impacts such as transportation bumps, equipment operation vibrations and accidental collisions, the integrally formed structure efficiently transmits and disperses stress with uniform material distribution, preventing the PCB board from separating and the electronic components 4 from being damaged due to loosening or breakage at the connection. It continuously and stably supports the two PCB boards, effectively ensuring the long-term stable operation of electronic equipment and greatly extending its service life.

[0019] In this embodiment of the invention, metal protrusions 5 are provided around the outer edges of the first through hole 11 and the second through hole 21, which are far from each other. The insertion portions 32 at both ends of the stacked plate support column 3 are respectively inserted into the metal protrusions 5. The inner ring sidewall of the metal protrusions 5 is welded and fixed to the outer wall of the insertion portion 32 of the stacked plate support column 3. By setting the metal protrusions 5, the metal protrusions 5 form a molten pool outside the first through hole 11 and the second through hole 21 during welding, which can avoid the risk of incomplete welding caused by uneven metal flow in traditional welding. Compared with conventional welding scenarios without the assistance of metal protrusions 5, the metal protrusions 5 in this invention expand the volume of the welding molten pool. Under the combined drive of capillary action and gravity, the liquid metal wets the outer wall of the insertion portion 32 in all directions without dead angles, effectively increasing the welding area and thus enhancing the fixing effect.

[0020] Furthermore, the height of the insertion part 32 is equal to the height of the metal protrusion 5 and the first through hole 11 or the second through hole 21, so that the end of the insertion part 32 is at the same horizontal height as the metal protrusion 5, thus avoiding the insertion part 32 protruding too high and affecting the welding effect.

[0021] The above embodiments are merely preferred embodiments of the present utility model and are only used to explain the present utility model, not to limit the present utility model. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A PCB board stack fixing structure, characterized by: The application relates to a PCB (printed circuit board) structure, which comprises a first PCB (1) and a second PCB (2) arranged in a vertical stack, and a stack support column (3) connected and supported between the first PCB (1) and the second PCB (2), wherein the first PCB (1) is provided with a first through hole (11) for being inserted into one end of the stack support column (3), the second PCB (2) is provided with a second through hole (21) for being inserted into the other end of the stack support column (3), the two ends of the stack support column (3) are respectively welded and fixed in the first through hole (11) and the second through hole (21), a plurality of electronic elements (4) are fixed on the second PCB (2), the electronic elements (4) are attached to the side edges of the stack support column (3), and the electronic elements (4) are connectors.

2. The PCB stack fixing structure according to claim 1, characterized in that: The stack support column (3) comprises a support body (31) and an insertion part (32) located at the two ends of the support body (31), the support body (31) and the insertion part (32) are both cylindrical blocks, and the cylindrical diameter of the insertion part (32) is smaller than that of the support body (31).

3. The PCB stack fixation structure according to claim 2, characterized in that: The support body (31) and the insertion part (32) are integrally formed.

4. The PCB stack fixation structure according to claim 1, characterized in that: Metal convex rings (5) are arranged on the edge outer surfaces of the first through hole (11) and the second through hole (21) away from each other, and the insertion parts (32) at the two ends of the stack support column (3) are respectively inserted into the metal convex rings (5).

5. The PCB stack fixation structure according to claim 4, characterized in that: The height of the insertion part (32) is equal to the height of the metal convex ring (5) and the first through hole (11) or the second through hole (21).

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