Double-layer PCB microcircuit module structure connected by spring needles
By using spring pins and support pillars, the problem of cracking of pin solder joints between multi-layer PCBA boards in microcircuit modules is solved, achieving stable and compact electrical connections. This is suitable for multi-point non-positioning and vertical short-distance connections, and improves the product's adaptability to vibration environments.
Patent Information
- Application Number
- CN202422724443.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-08
AI Technical Summary
When existing microcircuit modules are connected between multilayer PCBA boards, the pin solder joints are prone to cracking under stress, and the connection method is complex and not convenient for multi-point non-positioning connection and vertical short-distance connection.
The double-layer PCB microcircuit module structure with spring pin connection utilizes oxygen-free copper material with good conductivity and ductility to create spring pin design. Combined with support columns and inter-board connecting bamboo joints, it achieves elastic connection, absorbs vibration and impact energy, and avoids solder joint failure caused by hard connection.
It effectively alleviates the problem of solder joint cracking during module vibration, improves connection stability and space utilization efficiency, reduces the occupied size, and simplifies the complexity of inter-board connections.
Smart Images
Figure CN223527450U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to microcircuit integration technical field, concretely relates to a spring needle connected double -deck PCB microcircuit module structure. BACKGROUND
[0002] With the development of science and technology, electronic information industry, the structure design requirement of microcircuit module is also higher and higher, and higher performance smaller size is required, and more convenient, efficient use and lower cost are also required.
[0003] The current microcircuit module usually adopts the structure design of the multilayer PCBA stacking mode under the premise of limited use area, and the connection mode between the printed circuit boards of this type of multilayer PCBA board usually adopts 1. Soft wire connection; 2. FPC connection; 3. Bamboo joint lead connection and the like. But because: 1. The soft wire connection operation is difficult, and when the distance between the boards is large, the effective wire fixing cannot be realized due to the stacking installation of multiple PCBA, and the wire is easy to shake when vibrating. 2. FPC is convenient to use, but its structural characteristics are not suitable for large current connection, and its connection position is limited, which is not conducive to multi-point positioning connection and vertical short-distance connection. 3. Bamboo joint lead is convenient to use, and the connection distance is extremely short, which is widely used in low vibration level environment of products, but for relatively severe vibration environment, the straight lead hard connection mode is easy to cause the cracking of the pin soldering point under stress when the vibration level is large. UTILITY MODEL CONTENTS
[0004] In order to solve the technical problems such as cracking of pin soldering point under stress when the multilayer PCBA board adopts lead connection in the prior art, the utility model provides a spring needle connected double -deck PCB microcircuit module structure.
[0005] The technical scheme for solving the above technical problems of the utility model is as follows:
[0006] A spring needle connected double -deck PCB microcircuit module structure, comprising a shell, a circuit board containing hole is arranged at the top end of the shell, the circuit board containing hole is a counterbore, a PCB signal plate and a PCB power plate are sequentially arranged in the circuit board containing hole, the PCB signal plate is fixedly connected with the shell, a spring needle and a supporting column are arranged between the PCB signal plate and the PCB power plate, one end of the spring needle is connected with the PCB signal plate, the other end of the spring needle is connected with the PCB power plate, one end of the supporting column abuts against the PCB signal plate, and the other end of the supporting column is fixedly connected with the PCB power plate.
[0007] The orifice of the accommodating hole is provided with a cover plate for plugging the accommodating hole, the cover plate is connected with the shell, the PCB power plate is provided with an inter-plate connecting stub, one end of the inter-plate connecting stub is connected with the PCB power plate, and the other end of the inter-plate connecting stub passes through the cover plate through penetrating cooperation with the cover plate.
[0008] The utility model discloses beneficial effect is: based on microcircuit module double -deck PCBA structure design, the structure mode of spring needle lead connection design of inter -plate electrical connection adopts, the spring needle of this combination spring characteristic design adopts the oxygen -free copper material of good conductivity, ductility is better, adopts spring shape structure design, under the condition of big module vibration, because it has good deformation and the ability of absorbing vibration, impact energy, this spring needle connection design can avoid inter -plate hard connection, protect the pad welding point not because stress is too big and yield failure, this design makes full use of space reasonable layout design, solves the problem such as inter -plate connection cross -over welding complex, hard connection vibration stress, etc.
[0009] On the basis of the above technical scheme, the utility model further can make improvement as follows.
[0010] Further, the spring needle has a plurality of roots, one end of each of the spring needles is inserted and matched with the PCB signal plate, and the other end of each of the spring needles is inserted and matched with the PCB power plate.
[0011] The beneficial effect of the above further scheme is that by arranging a plurality of spring needles, vibration buffering effects can be achieved at each position between the PCB power plate and the PCB signal plate by uniformly distributing the plurality of spring needles between the PCB power plate and the PCB signal plate.
[0012] Further, the spring needle includes a spring, one end of the spring is fixedly provided with a first penetrating column, and the other end of the spring is fixedly provided with a second penetrating column; a first penetrating welding hole is formed in the PCB signal plate, a second penetrating welding hole is formed in the PCB power plate, the first penetrating column of the spring needle is inserted and matched with the first penetrating welding hole, and the second penetrating column of the spring needle is inserted and matched with the second penetrating welding hole.
[0013] The beneficial effect of the above further scheme is that the two ends of the spring needle are arranged into columnar penetrating columns, respectively, so that the two ends of the spring needle are respectively inserted and matched with the welding holes in the PCB signal plate and the PCB power plate through the penetrating columns, and welding stability can be improved when welding at the penetrating holes.
[0014] Further, the inter-plate connecting node has a plurality of nodes, one end of each of the inter-plate connecting nodes is matched with the cover plate, and the other end of each of the inter-plate connecting nodes is matched with the PCB power plate.
[0015] The beneficial effect of the above further scheme is that the plurality of inter-plate connecting nodes can lead out the plurality of wiring positions on the PCB power plate outside the accommodation hole through the cover plate, so that the PCB power plate can be electrically connected to the outside.
[0016] Further, the inter-plate connecting node includes a node body, a first lead wire welding end, and a second lead wire welding end, the first lead wire welding end is fixedly connected to one end of the node body, and the second lead wire welding end is fixedly connected to the other end of the node body.
[0017] The PCB power plate is provided with a node insertion hole, the second lead wire welding end is matched with the node insertion hole, the cover plate is provided with a lead wire connection end extension hole penetrating through the cover plate, and the first lead wire welding end is matched with the lead wire connection end extension hole.
[0018] The beneficial effect of the above further scheme is that the inter-plate connecting node is connected to the welding point on the PCB power plate through the matching mode, which can improve the welding stability.
[0019] Further, the circuit board accommodation hole is provided with a plurality of PCB mounting bosses, each of the PCB mounting bosses is fixedly connected to the shell, and the PCB signal plate is fixedly connected to the plurality of PCB mounting bosses.
[0020] The beneficial effect of the above further scheme is that the PCB signal plate has more space in the circuit board accommodation hole through the plurality of PCB mounting bosses, which can facilitate the arrangement of electronic components on both sides of the PCB signal plate and improve the capacity of the PCB signal plate to carry electronic components.
[0021] Further, the support column has a plurality of support columns, the plurality of support columns correspond to the plurality of PCB mounting bosses one by one, one end of each of the support columns is fixedly provided with a support stud, and the support stud at one end of each of the support columns is threadedly connected to the corresponding PCB mounting boss after penetrating through the PCB signal plate.
[0022] The beneficial effect of the above further scheme is that the PCB signal plate is fixed on the PCB mounting boss through the threaded connection, which can fix the PCB signal plate and also utilize the detachable function of the threaded connection to facilitate the disassembly of the PCB signal plate.
[0023] Further, the other end of each support column is fixedly connected with the PCB power plate by a locking screw.
[0024] The beneficial effect of the further scheme is that the support column and the PCB power plate are connected by the locking screw, thereby improving the disassembly convenience of the PCB power plate.
[0025] Further, the other end of each support column is provided with a support threaded hole, the PCB power plate is provided with a plurality of screw through holes, the plurality of screw through holes correspond to the plurality of support columns one by one, and the threaded end of the locking screw is screwed with the support threaded hole on the corresponding support column after passing through the corresponding screw through hole.
[0026] To solve the above technical problems, the utility model also provides a circuit module, and its specific technical contents are as follows:
[0027] A circuit module comprises the double-layer PCB microcircuit module structure connected by the spring needle. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is the three-dimensional structure schematic view of the utility model;
[0029] Figure 2 It is the explosion schematic view of the utility model;
[0030] Figure 3 It is the three-dimensional structure schematic view of the shell of the utility model;
[0031] Figure 4 It is the interboard connection bamboo joint of the utility model;
[0032] Figure 5 It is the spring of the utility model;
[0033] Figure 6 It is the support column of the utility model.
[0034] In the drawings, the component list represented by each sign is as follows:
[0035] 1. Outer shell; 1-1. PCB mounting boss; 1-2. Finished product mounting hole; 1-3. Cover plate mating surface; 1-4. PCB board positioning screw hole; 2. Circuit board receiving hole; 3. PCB signal board; 3-1. Stud through hole; 3-2. First through soldering hole; 4. Spring pin; 4-1. First through post; 4-2. Second through post; 5. PCB power board; 5-1. Screw through hole; 5-2. Second through soldering hole; 5-3. Bamboo joint insertion hole; 6. Cover plate; 6-1. Lead wire connection end protrusion hole; 7. Inter-board connection bamboo joint; 7-1. First lead wire soldering end; 7-2. Second lead wire soldering end; 8. Support post; 8-1. Support threaded hole; 8-2. Support stud; 9. Locking screw. Detailed Implementation
[0036] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0037] like Figure 1 As shown, this embodiment provides a double-layer PCB microcircuit module structure with spring pin connection, including a housing 1. The top of the housing 1 has a circuit board receiving hole 2, which is a countersunk hole. A PCB signal board 3 and a PCB power board 5 are sequentially arranged in the circuit board receiving hole 2. The PCB signal board 3 is fixedly connected to the housing 1. A spring pin 4 and a support post 8 are provided between the PCB signal board 3 and the PCB power board 5. One end of the spring pin 4 is connected to the PCB signal board 3, and the other end of the spring pin 4 is connected to the PCB power board 5. One end of the support post 8 abuts against the PCB signal board 3, and the other end of the support post 8 is fixedly connected to the PCB power board 5.
[0038] The opening of the receiving hole 2 is provided with a cover plate 6 for sealing the receiving hole 2. The cover plate 6 is connected to the outer shell 1. The PCB power board 5 is provided with an inter-board connecting section 7. One end of the inter-board connecting section 7 is connected to the PCB power board 5, and the other end of the inter-board connecting section 7 passes through the cover plate 6 through an interlocking fit. In this embodiment, the receiving hole 2 can be understood as an open mouth, or the outer shell 1 can be understood as a box with an open top, and the receiving hole 2 is the receiving cavity of the open box.
[0039] like Figure 2 As shown, there are multiple spring pins 4. One end of each spring pin 4 is inserted and matched with the PCB signal board 3, and the other end of each spring pin 4 is inserted and matched with the PCB power board 5.
[0040] By setting multiple spring pins 4, the vibration buffering effect can be achieved at each position between the PCB power plate 5 and the PCB signal plate 3 by uniformly distributing the multiple spring pins 4 between the PCB power plate 5 and the PCB signal plate 3.
[0041] The inter-plate connecting bamboo joints 7 are provided in multiple numbers, one end of each of the inter-plate connecting bamboo joints 7 is inserted into the cover plate 6, and the other end of each of the inter-plate connecting bamboo joints 7 is inserted into the PCB power plate 5.
[0042] The multiple inter-plate connecting bamboo joints 7 are provided to facilitate leading out the multiple wiring positions on the PCB power plate 5 outside the accommodating hole 2 through the cover plate 6, so that the PCB power plate 5 can be electrically connected with the outside world.
[0043] As shown in Figure 2 and Figure 3 A plurality of PCB mounting bosses 1-1 are arranged in the circuit board accommodating hole 2, each of the PCB mounting bosses 1-1 is fixedly connected with the shell 1, and the PCB signal plate 3 is fixedly connected with the plurality of PCB mounting bosses 1-1.
[0044] The PCB signal plate 3 is fixed by the plurality of PCB mounting bosses 1-1, so that the PCB signal plate 3 has more space in the circuit board accommodating hole 2, and electronic components can be arranged on both sides of the PCB signal plate 3, thereby improving the capacity of the PCB signal plate 3 to carry electronic components.
[0045] The hole opening of the circuit board accommodating hole 2, i.e., the cover plate abutting surface 1-3, is tightly attached to the cover plate 6, and four finished product mounting bosses are fixedly arranged on the cover plate abutting surface 1-3, the four finished product mounting bosses are arranged at four corners of the rectangular shell 1, and a finished product mounting hole 1-2 is arranged on each of the finished product mounting bosses, so as to facilitate connecting and fixing the circuit module provided by the utility model with other electrical facilities by means of screws or rods.
[0046] As shown in Figure 2 and Figure 5As shown, the spring needle 4 comprises a spring, one end of the spring is fixedly provided with a first insertion column 4-1, and the other end of the spring is fixedly provided with a second insertion column 4-2; the PCB signal plate 3 is provided with a first insertion welding hole 3-2, and the PCB power plate 5 is provided with a second insertion welding hole 5-2; the first insertion column 4-1 of the spring needle 4 is inserted and matched with the first insertion welding hole 3-2, and the second insertion column 4-2 of the spring needle 4 is inserted and matched with the second insertion welding hole 5-2. Among them, the spring, the first insertion column 4-1 and the second insertion column 4-2 are an integral structure. The spring, the first insertion column 4-1 and the second insertion column 4-2 on the spring needle 4 are all conductors, and the electrical signal is transmitted between the PCB signal plate 3 and the PCB power plate 5 through the spring needle 4.
[0047] The two ends of the spring needle 4 are provided as columnar insertion columns, which can make the two ends of the spring needle 4 respectively inserted and matched with the welding holes on the PCB signal plate 3 and the PCB power plate 5 through the insertion columns, so as to improve the welding stability when welding at the insertion holes.
[0048] The inter-plate connecting node 7 comprises a node body, a first lead wire welding end 7-1 and a second lead wire welding end 7-2, the first lead wire welding end 7-1 is fixedly connected with one end of the node body, and the second lead wire welding end 7-2 is fixedly connected with the other end of the node body; the node body, the first lead wire welding end 7-1 and the second lead wire welding end 7-2 of the connecting node 7 are all conductors, which can be preferably made of oxygen-free copper material or brass material.
[0049] The PCB power plate 5 is provided with a node insertion hole 5-3, the second lead wire welding end 7-2 is inserted and matched with the node insertion hole 5-3, the cover plate 6 is provided with a lead wire connecting end extension hole 6-1 penetrating through the cover plate 6, and the first lead wire welding end 7-1 is inserted and matched with the lead wire connecting end extension hole 6-1. Among them, the inter-plate connecting node 7 is a stepped shaft structure, the shaft center lines of the node body, the first lead wire welding end 7-1 and the second lead wire welding end 7-2 coincide, and the diameter of the node body is greater than the diameters of the first lead wire welding end 7-1 and the second lead wire welding end 7-2. Preferably, the node body, the first lead wire welding end 7-1 and the second lead wire welding end 7-2 are an integral structure.
[0050] The inter-plate connecting node 7 is connected with the welding point on the PCB power plate 5 in the insertion and matching mode, which can improve the welding stability.
[0051] As Figure 2 and Figure 6The support column 8 is provided with a plurality of support screw columns 8-2 at one end, the support screw column 8-2 at one end of each support column 8 penetrates the PCB signal plate 3 and is in threaded connection with the corresponding PCB mounting boss 1-1. The diameter of the support screw column 8-2 is smaller than the diameter of the support column 8, the PCB signal plate 3 is provided with a plurality of screw penetration holes 3-1, the plurality of screw penetration holes 3-1 correspond to the plurality of support columns 8, each screw penetration hole 3-1 is a through hole, each PCB mounting boss 1-1 is provided with a PCB plate positioning screw hole 1-4, and the support screw column 8-2 at one end of each support column 8 is in threaded matching with the PCB plate positioning screw hole 1-4 on the corresponding PCB mounting boss 1-1 after penetrating the corresponding screw penetration hole 3-1.
[0052] The PCB signal plate 3 is fixed on the PCB mounting boss 1-1 in a threaded connection mode, so that the PCB signal plate 3 can be fixed, and meanwhile, the threaded connection can be used to facilitate disassembly of the PCB signal plate 3.
[0053] In some embodiments, the other end of each support column 8 is fixedly connected with the PCB power plate 5 through a locking screw 9. The support column 8 and the PCB power plate 5 are connected through the locking screw 9, so that the disassembly convenience of the PCB power plate 5 can be improved.
[0054] The other end of each support column 8 is provided with a support threaded hole 8-1, the PCB power plate 5 is provided with a plurality of screw penetration holes 5-1, the plurality of screw penetration holes 5-1 correspond to the plurality of support columns 8, and the threaded end of the locking screw 9 is in threaded cooperation with the support threaded hole 8-1 on the corresponding support column 8 after penetrating the corresponding screw penetration hole 5-1.
[0055] The utility model discloses an embodiment based on microcircuit module double -deck PCBA structure design, and the structure mode that spring needle lead connection design is used to the electrical connection between boards, the spring needle of this spring characteristic design adopts the oxygen -free copper material of good conductivity and better ductility, adopts the spring shape structure design, under the condition of module vibration is bigger, because it has good deformation and the ability of absorbing vibration, impact energy, this spring needle connection design can avoid the hard connection between boards, and the pad welding point is not because stress is too big and yields invalidly, this design makes full use of space and solves the problems, such as complicated cross -over welding of board connection, hard connection vibration stress, etc., while reducing the size occupied, and solve the problems, such as the cracking of connection welding point caused by the hard connection stress between boards.
[0056] In some other embodiments, a circuit module is also provided, comprising the spring needle connected double-layer PCB microcircuit module structure described above; it can be understood that the circuit module in the embodiments is integrated and packaged by using the spring needle connected double-layer PCB microcircuit module structure described above.
[0057] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the concept and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A spring pin connected double layer PCB microcircuit module structure, characterized by: The application relates to a circuit board fixing device, which comprises a shell (1), a circuit board containing hole (2) is formed in the top end of the shell (1), the circuit board containing hole (2) is a counterbore, a PCB signal plate (3) and a PCB power plate (5) are sequentially arranged in the circuit board containing hole (2), the PCB signal plate (3) is fixedly connected with the shell (1), a spring needle (4) and a supporting column (8) are arranged between the PCB signal plate (3) and the PCB power plate (5), one end of the spring needle (4) is connected with the PCB signal plate (3), the other end of the spring needle (4) is connected with the PCB power plate (5), one end of the supporting column (8) is abutted with the PCB signal plate (3), and the other end of the supporting column (8) is fixedly connected with the PCB power plate (5). A cover plate (6) for sealing the containing hole (2) is arranged at the opening of the containing hole (2), the cover plate (6) is connected with the shell (1), an inter-plate connecting node (7) is arranged on the PCB power plate (5), one end of the inter-plate connecting node (7) is connected with the PCB power plate (5), and the other end of the inter-plate connecting node (7) passes through the cover plate (6) through penetrating cooperation with the cover plate (6).
2. The spring pin connected double layer PCB microcircuit module structure according to claim 1, characterized in that: The spring needle (4) has a plurality of spring needles, one end of each spring needle (4) is inserted into the PCB signal plate (3) in a matching mode, and the other end of each spring needle (4) is inserted into the PCB power plate (5) in a matching mode.
3. The spring pin connected double layer PCB microcircuit module structure according to claim 2, characterized in that: The spring needle (4) comprises a spring, one end of the spring is fixedly provided with a first penetrating column (4-1), and the other end of the spring is fixedly provided with a second penetrating column (4-2); a first penetrating welding hole (3-2) is formed in the PCB signal plate (3), a second penetrating welding hole (5-2) is formed in the PCB power plate (5), the first penetrating column (4-1) of the spring needle (4) is inserted into the first penetrating welding hole (3-2) in a matching mode, and the second penetrating column (4-2) of the spring needle (4) is inserted into the second penetrating welding hole (5-2) in a matching mode.
4. The spring pin connected double layer PCB microcircuit module structure according to claim 1, characterized in that: The inter-plate connecting node (7) has a plurality of inter-plate connecting nodes, one end of each inter-plate connecting node (7) is penetratingly matched with the cover plate (6), and the other end of each inter-plate connecting node (7) is inserted into the PCB power plate (5) in a matching mode.
5. The spring pin connected double layer PCB microcircuit module structure according to claim 4, characterized in that: The inter-plate connecting node (7) comprises a node body, a first lead wire welding end (7-1) and a second lead wire welding end (7-2), the first lead wire welding end (7-1) is fixedly connected with one end of the node body, and the second lead wire welding end (7-2) is fixedly connected with the other end of the node body. The PCB power plate (5) is provided with a node insertion hole (5-3), the second lead wire welding end (7-2) is inserted into the node insertion hole (5-3) in a matching mode, the cover plate (6) is provided with a lead wire connecting end protruding hole (6-1) penetrating through the cover plate (6), and the first lead wire welding end (7-1) is penetratingly matched with the lead wire connecting end protruding hole (6-1).
6. The spring pin connected double layer PCB microcircuit module structure according to claim 1, characterized in that: The circuit board accommodating hole (2) is provided with a plurality of PCB mounting bosses (1-1), each of which is fixedly connected with the shell (1); the PCB signal plate (3) is fixedly connected with the plurality of PCB mounting bosses (1-1).
7. The spring pin connected double layer PCB microcircuit module structure according to claim 6, characterized in that: The support column (8) has a plurality of support columns (8) corresponding to the plurality of PCB mounting bosses (1-1), and one end of each of the support columns (8) is fixedly provided with a support stud (8-2), and the support stud (8-2) at one end of each of the support columns (8) is screwed with the corresponding PCB mounting boss (1-1) after penetrating the PCB signal plate (3).
8. The spring pin connected double layer PCB microcircuit module structure according to claim 7, characterized in that: The other end of each of the support columns (8) is fixedly connected with the PCB power plate (5) through a locking screw (9).
9. The spring pin connected double layer PCB microcircuit module structure according to claim 8, characterized in that: The other end of each of the support columns (8) is provided with a support threaded hole (8-1), and the PCB power plate (5) is provided with a plurality of screw passing holes (5-1), and the plurality of screw passing holes (5-1) correspond to the plurality of support columns (8) one by one; the threaded end of the locking screw (9) is screwed with the support threaded hole (8-1) on the corresponding support column (8) after penetrating the corresponding screw passing hole (5-1).
10. A circuit module, characterized by A double-layer PCB microcircuit module structure comprising spring pin connections as claimed in any one of claims 1 to 9.