PCBA fixing structure
Through the combined structure of long-leg plug-ins and positioning plates and the use of thermally conductive insulating ceramic plates, the deformation problem caused by PCBA fixation is solved, the stability and heat dissipation performance of the circuit board are improved, and the production cost is reduced.
Patent Information
- Application Number
- CN202421678173.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In the prior art, the fixing method of PCBA causes it to deform under factors such as long-term work and heating, affecting working performance, and even leading to scrapping.
The combined structure of a long-leg plug-in and a positioning plate is adopted. The long-leg plug-in and installation are connected and installed by the long-leg pin and the positioning hole, combined with the use of thermally conductive insulating ceramic plate, the structural stability of the middle area is enhanced, and the balanced force and compactness of the circuit board are ensured through the design of the limiting groove and the bottom plate.
It improves the deformation resistance of the circuit board, increases the heat dissipation area, reduces production costs, extends service life, and improves the stability and heat dissipation performance of the overall structure.
Smart Images
Figure CN223168554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit board assemblies, in particular to a PCBA fixing structure. Background Art
[0002] PCBA, also known as a circuit board assembly, is an indispensable core part of modern electronic devices. It is responsible for connecting and fixing various electronic components and carrying out the task of realizing specific electronic functions.
[0003] With the increasing complexity of electronic device functions and the improvement of integration, the problems existing in PCBA fixing have gradually emerged. In related technologies, the fixing method of PCBA usually uses an insulating plastic part for wrapping and fixing. The positioning between the insulating plastic part and the PCBA is concentrated at the edge position of the PCBA, and the force on each area of the PCBA is unbalanced. This will cause the shape of the PCBA to be deformed easily under the influence of factors such as long-term operation and heat generation, and then lead to a decline in the working performance of the PCBA, or even scrapping.
[0004] Therefore, it is necessary to improve the existing technology.
[0005] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or admit whether any of the above content can be used as the prior art relative to the present disclosure. Summary of the Utility Model
[0006] The utility model provides a PCBA fixing structure, which can improve the fixing effect on the PCBA module and improve the working performance to solve the problems existing in the prior art.
[0007] To achieve the above object, the utility model provides the following technical solutions:
[0008] A PCBA fixing structure includes a PCBA module, a housing, a bottom plate and a positioning plate. The PCBA module includes a circuit board, long-legged plug-ins and short-legged plug-ins. The long-legged plug-ins and the short-legged plug-ins are both connected to the circuit board by front-side plugging. The long-legged plug-ins are located in the middle area of the circuit board, and the long pins of the long-legged plug-ins protrude from the back of the circuit board.
[0009] The circuit board is installed in the housing. The bottom plate is connected to the housing and abuts against the back of the circuit board. The bottom plate is provided with mounting holes corresponding to the positions of the long-legged plug-ins. The positioning plate is installed in the mounting holes. The positioning plate is provided with a number of positioning holes corresponding to each long pin one by one, and the long pins are plugged and installed in the positioning holes.
[0010] In a possible implementation manner, a limiting groove is provided on one side of the housing close to the bottom plate, and the circuit board is installed in the limiting groove.
[0011] In a possible implementation, the long-pin plug is a long-pin LED plug, the short-pin plug is a short-pin LED plug, a lighting relief hole is provided on one side of the housing away from the bottom plate, the lighting relief hole is connected to the bottom of the limiting groove, the bodies of the long-pin LED plug and the short-pin LED plug are both located in the lighting relief hole, and the edge of the circuit board abuts against the limiting groove.
[0012] In a possible implementation, there are multiple long-pin LED plugs, and all the long-pin LED plugs are arranged at equal intervals on the circuit board, and the shape of the mounting hole matches the shape formed by the arrangement of all the long-pin LED plugs.
[0013] In a possible implementation, all the long-pin LED plugs are arranged to form a cross shape for dividing the circuit board into four short-pin regions, and each short-pin region is provided with multiple short-pin LED plugs arranged at equal intervals.
[0014] In a possible implementation, a fixing layer is provided in the positioning hole, and the fixing layer connects the long pin and the fixing plate.
[0015] In a possible implementation, the mounting hole includes a board accommodating groove and a pin accommodating hole. The board accommodating groove is provided on the side of the bottom plate away from the circuit board, the pin accommodating hole is connected to the bottom of the board accommodating groove, and the positioning plate is installed in the board accommodating groove.
[0016] In a possible implementation, the bottom plate is a thermally conductive insulating ceramic plate.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] A PCBA fixing structure provided by the utility model is installed by inserting and connecting the long pins of the long-pin plug with the positioning holes on the positioning plate. The housing and the bottom plate can position the long-pin plug through the positioning plate, strengthening the structural stability of the middle region of the circuit board, improving the balance of forces on each region of the circuit board, thereby effectively improving the anti-deformation ability of the circuit board, maintaining the flatness of the circuit board, and making the structure of the PCBA module stable and reliable. In addition, the short pins of the short-pin plug are inserted and received in the circuit board, and the positioning holes can make way for the setting of the long pins, ensuring that the bottom plate is compactly arranged on the back side of the circuit board. It can not only effectively prevent an obvious hollow interval from being formed between the circuit board and the backplane, effectively improve the compactness of the overall structure, have strong anti-external force impact ability, effectively fix the PCBA module, but also effectively increase the heat dissipation area of the circuit board, facilitate heat dissipation of the PCBA module, effectively improve the working performance of the PCBA module, and effectively extend the service life of the PCBA module.
[0019] The present utility model has other characteristics and advantages, which will be apparent from the accompanying drawings incorporated herein and the subsequent detailed description, or will be described in detail in the accompanying drawings incorporated herein and the subsequent detailed description. These accompanying drawings and detailed description are used together to explain the specific principles of the present utility model. Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.
[0021] Figure 1 is a schematic perspective view of the PCBA fixing structure provided by an embodiment of the present utility model;
[0022] Figure 2 is an exploded schematic view of the PCBA fixing structure provided by an embodiment of the present utility model;
[0023] Figure 3 is a schematic top view of the PCBA fixing structure provided by an embodiment of the present utility model;
[0024] Figure 4 is along Figure 3 the cross-sectional structure schematic view of A - A' in
[0025] Figure 5 is along Figure 3 the cross-sectional structure schematic view of B - B' in
[0026] Reference numerals:
[0027] PCBA module 100, circuit board 110, long-legged plug-in 120, short-legged plug-in 130;
[0028] housing 200, limiting groove 210, lighting relief hole 220;
[0029] bottom plate 300, mounting hole 310, capacitor plate groove 311, capacitor pin hole 312;
[0030] positioning plate 400, positioning hole 410, fixing layer 420. Detailed Description of the Embodiments
[0031] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects of this application, etc., the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only used as examples and cannot be used to limit the protection scope of this application.
[0032] As used herein, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0033] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.
[0034] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.
[0035] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary, or order relationship between these entities or operations.
[0036] Without more limitations, in this application, the expressions such as "including", "comprising", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be other elements in the process, method or product including the said elements, so that a process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or also elements inherent to this process, method or product.
[0037] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood to exclude the corresponding number; expressions such as "above", "below", "within", etc. are understood to include the corresponding number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.
[0038] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings. It is only for the convenience of describing the specific embodiments of this application or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.
[0039] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms such as "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0040] PCBA, also known as a circuit board assembly, is an indispensable core part of modern electronic devices. It is responsible for connecting and fixing various electronic components and undertakes the task of realizing specific electronic functions. With the increasing complexity of the functions of electronic devices and the improvement of integration, the problems existing in the fixation of PCBA have gradually become prominent. The traditional PCBA fixation method often uses plastic parts for wrapping and fixing. When subjected to external impacts, such as dropping during transportation, the plastic parts are prone to deformation and fracture, resulting in damage or detachment of the PCBA. In addition, the plastic parts required by the traditional fixation method are relatively large in volume, which not only increases the production cost but also affects the overall design and heat dissipation performance of the electronic device.
[0041] In the related art, the PCBA is usually fixed by wrapping it with an insulating plastic part. The positioning between the insulating plastic part and the PCBA is concentrated at the edge of the PCBA, resulting in unbalanced stress on each area of the PCBA. This will cause the shape of the PCBA to be easily deformed under the influence of factors such as heat generation during long-term operation, thereby leading to a decline in the working performance of the PCBA and even scrapping.
[0042] In view of this, the present patent aims to provide a PCBA fixing structure that can improve the fixing effect on the PCBA module and improve the working performance, and can solve the technical problem that the PCBA cannot be stably fixed in the prior art.
[0043] The technical solution of the present invention will be further described below in conjunction with the drawings and through specific embodiments.
[0044] Please refer to Figures 1 to 5 , an embodiment of the present utility model provides a PCBA fixing structure, including a PCBA module 100, a housing 200, a bottom plate 300, and a positioning plate 400. The PCBA module 100 includes a circuit board 110, a long-legged plug-in 120, and a short-legged plug-in 130. The length of the long pins of the long-legged plug-in 120 is greater than the length of the short pins of the short-legged plug-in 130. Both the long-legged plug-in 120 and the short-legged plug-in 130 are plugged and connected to the circuit board 110 from the front side of the circuit board 110, that is, the bodies of the long-legged plug-in 120 and the short-legged plug-in 130 are both located on the front side of the circuit board 110. The long-legged plug-in 120 is located in the middle area of the circuit board 110, and the long pins of the long-legged plug-in 120 protrude from the back side of the circuit board 110. Both the long pins and the short pins are welded to the back side of the circuit board 110;
[0045] The circuit board 110 is installed in the housing 200. The bottom plate 300 is connected to the housing 200, and the bottom plate 300 abuts against the back side of the circuit board 110. The circuit board 110 can be clamped and positioned by the housing and the bottom plate 300. Moreover, the bottom plate 300 abuts against the back side of the circuit board 110, which can not only effectively improve the stability of the position of the circuit board 110, but also increase the contact area between the circuit board 110 and the bottom plate 300, thereby improving the heat dissipation performance. The bottom plate 300 is provided with mounting holes 310 corresponding to the position of the long-legged plug-in 120. The positioning plate 400 is installed in the mounting holes 310. The positioning plate 400 is provided with a plurality of positioning holes 410 corresponding to each long pin one by one. The long pins are plugged and installed in the positioning holes 410.
[0046] The housing 200 and the bottom plate 300 can be positioned by the long - pin plug 120 through the insertion of the long pins of the long - leg plug 120 into the positioning holes 410 on the positioning plate 400. Furthermore, the long - leg plug 120 can strengthen the structural stability of the middle area of the circuit board 110, effectively improving the balance of the forces on each area of the circuit board 110. As a result, the anti - deformation ability of the circuit board 110 can be effectively improved, the flatness of the circuit board 110 can be effectively maintained, and the structure of the PCBA module 100 is stable and reliable. In addition, the short pins of the short - leg plug 130 are inserted and received in the circuit board 110, and the positioning holes 410 can provide a space for the arrangement of the long pins, ensuring that the bottom plate 300 is tightly arranged on the back side of the circuit board 110. This can not only effectively prevent the formation of an obvious hollow interval between the circuit board 110 and the backplane, effectively improve the compactness of the overall structure, and have strong anti - external - force impact ability, but also reduce the displacement or detachment of the PCBA module 100 under vibration or impact, effectively fixing the PCBA module 100. Moreover, it can effectively increase the heat - dissipation area of the circuit board 110, facilitate the heat dissipation of the PCBA module 100, effectively improve the working performance of the PCBA module 100, and effectively extend the service life of the PCBA module 100, avoiding the burnout of the PCBA module 100 due to excessive heat accumulation.
[0047] Compared with the traditional way of covering and fixing plastic parts, the number of plastic parts required in this technical solution is greatly reduced, which can effectively reduce production costs. The fixing structure is simplified, effectively reducing the difficulty of production and processing, thereby improving production efficiency.
[0048] It can be understood that a limiting groove 210 is provided on one side of the housing 200 close to the bottom plate 300. The circuit board 110 is installed in the limiting groove 210. By restricting the position of the circuit board 110 through the limiting groove 210, the convenience of the installation operation can be effectively improved, and the groove wall and the bottom of the limiting groove 210 can position the edge position of the circuit board 110 from two dimensions, effectively improving the structural stability of the circuit board 110.
[0049] It can be understood that the long - leg plug 120 is a long - leg LED plug, the short - leg plug 130 is a short - leg LED plug. A lighting relief hole 220 is provided on one side of the housing 200 away from the bottom plate 300. The lighting relief hole 220 is connected to the bottom of the limiting groove 210. The width dimension of the limiting groove 210 is greater than the width dimension of the lighting relief hole 220. The bodies of the long - leg LED plug and the short - leg LED plug are both located in the lighting relief hole 220, and the light emitted by the long - leg LED plug and the short - leg LED plug passes through the lighting relief hole 220 and exits. The edge area of the circuit board 110 abuts against the groove wall and the bottom of the limiting groove 210.
[0050] It can be understood that there are multiple long-legged LED plug-ins, and all the long-legged LED plug-ins are arranged continuously at equal intervals on the circuit board 110. The shape and size of the mounting holes 310 match the shape and size formed by the arrangement of all the long-legged LED plug-ins. That is, the mounting holes 310 are structures with continuous internal spaces, and the insertion between the positioning plate 400 and the mounting holes 310 can be completed with one operation, which is convenient and fast.
[0051] It can be understood that the arrangement of all the long-legged LED plug-ins forms a cross shape for dividing the circuit board 110 into four short-legged areas. The four short-legged areas are centrosymmetric about the midpoint of the circuit board 110. That is, the four short-legged areas coincide with themselves after rotating 180 degrees around the midpoint of the circuit board 110. There are multiple short-legged LED plug-ins, and each short-legged area is provided with multiple short-legged LED plug-ins arranged at equal intervals. By dividing the circuit board 110 into four independent short-legged areas through multiple long-legged LED plug-ins distributed in a cross shape and setting multiple evenly distributed short-legged LED plug-ins in each short-legged area, the shape of the mounting holes 310 is a cross shape matching the distribution shape of the long-legged LED plug-ins, and the positioning plate 400 is also a corresponding cross shape.
[0052] The edge area of the circuit board 110 can be positioned through the outer shell, and the positions of each long-legged LED can be clamped and positioned through the cross-shaped positioning plate 400, so as to form a reliable supporting force on the middle area of the circuit board 110, effectively improve the anti-deformation ability of each area of the circuit board 110, and ensure the working performance of the PCBA module 100.
[0053] It can be understood that a fixing layer 420 is provided in the positioning hole 410. The fixing layer 420 connects the long pin and the fixing plate. That is, the fixing layer 420 surrounds the long pin and covers the inner wall of the positioning hole 410, so as to realize the fixation between the long pin and the positioning plate 400.
[0054] Specifically, the fixing layer 420 can be set as a thermally conductive silicone layer, which can not only effectively improve the heat dissipation performance of the long-legged LED plug-in, but also utilize the characteristic of the large surface friction coefficient of the thermally conductive silicone to realize reliable clamping and fixation of the long pin, so as to effectively improve the positioning effect formed by the positioning plate 400 on the long-legged LED plug-in and further improve the anti-deformation ability of the PCBA module 100.
[0055] It can be understood that the mounting hole 310 includes a board receiving groove 311 and a pin receiving hole 312. The board receiving groove 311 is provided on the side of the bottom plate 300 away from the circuit board 110. The pin receiving hole 312 is connected to the bottom of the board receiving groove 311. The pin receiving hole 312 penetrates through the side of the bottom plate 300 close to the circuit board 110. The positioning plate 400 is installed in the board receiving groove 311. The pin receiving hole 312 is used for the long pins to pass through. The hole width of the pin receiving hole 312 is smaller than the groove width of the board receiving groove 311, that is, the projection of the pin receiving hole 312 in the board receiving groove 311 is within the enclosure of the bottom of the groove. The position of the positioning plate 400 can be effectively limited through the board receiving groove 311.
[0056] It can be understood that the bottom plate 300 is a thermally conductive and insulating ceramic plate. Thermally conductive and insulating ceramics are a special type of ceramic material with significant thermal conductivity and insulation properties. When used to support the PCBA module 100, it can effectively reduce the heat accumulation of the PCBA module 100, thereby effectively improving the working performance of the PCBA module 100.
[0057] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application, using the content recorded in the text and drawings of the specification of this application, and any technical solutions directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.
Claims
1. A PCBA fixing structure, characterized in that, It includes a PCBA module (100), a housing (200), a bottom plate (300) and a positioning plate (400). The PCBA module (100) includes a circuit board (110), long-pin plugins (120) and short-pin plugins (130). The long-pin plugins (120) and the short-pin plugins (130) are both plugged and connected to the circuit board (110) from the front. The long-pin plugins (120) are located in the middle area of the circuit board (110), and the long pins of the long-pin plugins (120) protrude from the back of the circuit board (110). The circuit board (110) is installed in the housing (200). The bottom plate (300) is connected to the housing (200), and the bottom plate (300) abuts against the back of the circuit board (110). The bottom plate (300) is provided with mounting holes (310) corresponding to the positions of the long-pin plugins (120). The positioning plate (400) is installed in the mounting holes (310). The positioning plate (400) is provided with a number of positioning holes (410) corresponding one by one to each of the long pins. The long pins are plugged and installed in the positioning holes (410).
2. The PCBA fixing structure according to claim 1, wherein A limiting groove (210) is provided on one side of the housing (200) close to the bottom plate (300), and the circuit board (110) is installed in the limiting groove (210).
3. The PCBA fixing structure according to claim 2, characterized in that, The long-pin plugins (120) are long-pin LED plugins, and the short-pin plugins (130) are short-pin LED plugins. A lighting relief hole (220) is provided on one side of the housing (200) away from the bottom plate (300). The lighting relief hole (220) is connected to the bottom of the limiting groove (210). The bodies of the long-pin LED plugins and the short-pin LED plugins are both located in the lighting relief hole (220), and the edge of the circuit board (110) abuts against the limiting groove (210).
4. A PCBA fixing structure according to claim 3, characterized in that, There are multiple long-pin LED plugins, and all the long-pin LED plugins are arranged at equal intervals on the circuit board (110). The shape of the mounting holes (310) matches the shape formed by the arrangement of all the long-pin LED plugins.
5. The PCBA fixing structure according to claim 4, wherein, All the long-pin LED plugins are arranged in a cross shape for dividing the circuit board (110) into four short-pin areas. Each short-pin area is provided with multiple short-pin LED plugins arranged at equal intervals.
6. The PCBA fixing structure according to claim 5, wherein A fixing layer (420) is provided in the positioning holes (410), and the fixing layer (420) connects the long pins and the fixing plate.
7. A PCBA fixing structure according to claim 1, characterized in that, The mounting holes (310) include a board-receiving groove (311) and a pin-receiving hole (312). The board-receiving groove (311) is provided on the side of the bottom plate (300) away from the circuit board (110). The pin-receiving hole (312) is connected to the bottom of the board-receiving groove (311). The positioning plate (400) is installed in the board-receiving groove (311).
8. A PCBA fixing structure according to claim 1, characterized in that, The bottom plate (300) is a thermally conductive and insulating ceramic plate.