Reliable connection device between printed circuit boards

Abstract

The utility model discloses a reliable connecting device between printed circuit boards. The reliable connection device between the printed circuit boards comprises a plug-in connector and a guider, a plug-in base of the plug-in connector is connected with the lower part of the printed circuit board above and is provided with a plurality of vertical terminal grooves, the middle body of the connecting terminal is fixed in the terminal grooves, and the head part above the middle body is electrically connected with a fixing hole of the printed circuit board above; the two ends of a guide base of the guider are fixedly connected to the printed circuit board below, a plurality of vertical guide positioning holes are formed in the middle of the guide base, and the guide positioning holes and the terminal grooves are arranged in the same manner; and a plurality of connecting pins below the middle body pass through the opposite guide positioning holes and enter and are electrically connected with fixing holes of a printed circuit board below. The utility model has the effects of being suitable for quick and reliable connection with small spacing, low in cost and high in product yield.

Description

Technical Field

[0001] This utility model relates to the field of electrical connections, and in particular to a reliable connection device between printed circuit boards. Background Technology

[0002] In electrical connections, the connection and conduction between two printed circuit boards (PCBs) is often involved. To facilitate the connection and separation of PCBs, a common separate connection structure is used: connectors are set on each of the two PCBs, and the PCBs are connected to the connectors at both ends via ribbon cables. The problems with this structure are as follows: First, there is a large positional tolerance between the PCBs, so the connectors need to have good guiding ability. Especially when the distance between the PCBs is small, the current structure requires multiple connectors to work together. The weak guiding ability necessitates frequent adjustments to complete the installation, resulting in low installation efficiency and high cost. Furthermore, multiple trial installations can easily lead to installation defects, reducing product yield. Second, the current structure requires at least two connectors between the two PCBs. The male and female terminals need to be fixed to plastic, resulting in a large terminal spacing and occupying a lot of space, making it unsuitable for small-pitch installations. Third, the ribbon cables are directly soldered to the PCB structure, which is prone to cold solder joints, resulting in poor solder strength. Cable handling is also time-consuming and costly. Utility Model Content

[0003] To address one or more of the aforementioned problems, this utility model provides a reliable connection device between printed circuit boards.

[0004] According to one aspect of the present invention, a reliable connection device between printed circuit boards includes: a connector and a guide disposed between two printed circuit boards in opposite positions.

[0005] The connector includes a plug base and several connection terminals. The plug base is connected to the printed circuit board above and has several vertical terminal slots. The middle body of the connection terminal is fixed in the terminal slot, and the head above the middle body is electrically connected to the fixing hole of the printed circuit board above.

[0006] The guide base of the guide is fixedly connected to the printed circuit board below at both ends. The guide base has several vertical guide positioning holes in the middle. The guide positioning holes and the terminal slots are arranged in the same way.

[0007] Several connecting pins on the lower part of the intermediate body pass through the corresponding guide positioning holes and enter the fixing holes of the printed circuit board below.

[0008] In some implementations, the upper end of the guide positioning hole is an inverted conical guide slide and the lower end is a positioning channel, with the positioning channel and the connecting foot being connected with a small clearance fit.

[0009] In some embodiments, several lower cylinders are integrally connected to the groove wall of the middle groove on the lower surface of the guide base, and the central through hole of the lower cylinder is a positioning channel.

[0010] In some embodiments, the mounting holes at the middle of the two transverse ends of the guide base are interference-fitted to the upper end piece of the welding plate, and the welding feet at the lower end of the welding plate are welded together with the printed circuit board below.

[0011] In some embodiments, the mounting hole is a vertical stepped through hole, with the upper end piece interference-fitting the inner rectangular hole of the mounting hole and the lower end face conforming to the positioning shoulder of the mounting hole.

[0012] In some embodiments, the lower end of the soldering plate has two laterally outwardly bent soldering feet, which are used to solder solder pads on the printed circuit board below.

[0013] In some embodiments, the terminal slot is a right-angle slot; the middle body is a right-angle piece, and its longitudinal piece and longitudinal port, vertical piece and vertical port are connected with a small clearance fit. The upper end of the vertical piece extends upward integrally to form a head, and the lower side of the rear end of the longitudinal piece extends vertically downward to form a connecting foot.

[0014] In some embodiments, a rectangular positioning base is provided on the rear end of the terminal slot, the rear side of the vertical piece is attached to the front side of the positioning base, and the lower side of the longitudinal piece is attached to the upper side of the positioning base.

[0015] In some embodiments, a vertical slot is provided on the lower rear wall of the positioning base block, and an integrally formed plug-in pin is provided on the upper rear side of the vertical plate, with the plug-in pin sleeve connecting to the vertical slot.

[0016] In some implementations, the protruding end block of the plug base is attached to the printed circuit board above it;

[0017] Alternatively, the head and connecting pins can be soldered together with the mounting holes of the two printed circuit boards.

[0018] This reliable connection device between printed circuit boards uses only one type of terminal. The terminal slots on the insertion base ensure terminal installation accuracy, and the guide positioning holes on the guide base ensure guiding accuracy, enabling fast, efficient, and reliable connection between two printed circuit boards. Its advantages are: First, using only one type of terminal minimizes axial and radial space requirements, making it particularly suitable for small-pitch connections. The identical arrangement of the guide positioning holes and insertion slots ensures consistent overall assembly dimensions. The excellent fine-tuning capability of the guide positioning holes effectively ensures smooth and quick insertion of the terminal's connecting pins into another printed circuit board. Therefore, it is suitable for fast and reliable assembly with small board pitches, allowing for installation in a single setup, resulting in high installation efficiency, low cost, and high product yield. Second, the small terminal pitch of this structure minimizes space occupation. Third, the well-fixed connection position facilitates subsequent soldering processes, eliminating defects such as incomplete soldering, simplifying the assembly process, increasing assembly accuracy, and effectively reducing costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a reliable connection device between printed circuit boards according to one embodiment of the present invention.

[0020] Figure 2 for Figure 1 The diagram shows a front view of a reliable connection device between printed circuit boards.

[0021] Figure 3 for Figure 2 The diagram shows a cross-sectional view (AA) of a reliable connection device between printed circuit boards.

[0022] Figure 4 for Figure 2 A three-dimensional schematic diagram of the connector shown;

[0023] Figure 5 for Figure 4 A three-dimensional schematic diagram of the plug-in base shown;

[0024] Figure 6 for Figure 4 A three-dimensional schematic diagram of the connection terminals shown;

[0025] Figure 7 for Figure 2 A three-dimensional schematic diagram of the guide shown;

[0026] Figure 8 for Figure 7 A three-dimensional schematic diagram of the guide base shown;

[0027] Figure 9 for Figure 8 A cross-sectional schematic diagram of the guide base shown;

[0028] Figure 10 for Figure 7 A three-dimensional schematic diagram of the welding plate shown;

[0029] Printed circuit board 00, mounting hole 001;

[0030] Connector 01, plug base 1, terminal slot 10, longitudinal port 101, vertical port 102, positioning base block 11, vertical slot 12, protruding end block 13, process notch 14, connecting terminal 2, intermediate body 20, head 21, connecting foot 22, longitudinal piece 201, vertical piece 202, plug foot 203.

[0031] Guide 02, guide base 3, guide positioning hole 30, guide slide 301, positioning channel 302, mounting hole 31, inner rectangular hole 311, positioning shoulder 312, lower cylinder 32, central groove 33.

[0032] Welding plate 4, upper end piece 41, welding foot 42, elastic protrusion 43;

[0033] Welding piece 5. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0035] Figures 1 to 10 A reliable connection device between printed circuit boards according to one embodiment of the present invention is schematically shown. As shown, the reliable connection device between printed circuit boards includes: a connector 01 and a guide 02 disposed between two printed circuit boards 00 located opposite each other;

[0036] The connector 01 includes a plug base 1 and several connection terminals 2. The plug base 1 is connected to the printed circuit board 00 above and has several vertical terminal slots 10. The middle body 20 of the connection terminal 2 is fixed in the terminal slot 10. The head 21 above the middle body 20 is electrically connected to the fixing hole 001 of the printed circuit board 00 above.

[0037] The guide base 3 of the guide 02 is fixedly connected to the printed circuit board 00 below at both ends. The guide base 3 has several vertical guide positioning holes 30 in the middle, which are arranged in the same manner as the terminal slot 10. Preferably, the upper end of the guide positioning hole 30 is an inverted conical guide slide 301 and the lower end is a positioning channel 302. The positioning channel 302 and the connecting foot 22 are connected with a small clearance fit. The beneficial effect is that the inverted conical guide slide 301 can quickly and gently guide the mounting foot 301 into the positioning channel 302, realizing fast and high-precision assembly.

[0038] Several connecting pins 22 below the intermediate body 20 pass through the opposite guide positioning holes 30 and enter into the fixing holes 001 of the printed circuit board 00 below.

[0039] Preferably, the head 21 and the mounting hole 001 of the printed circuit board 00 above are welded together; the lower end of the connecting foot 22 and the mounting hole 001 of the printed circuit board 00 below are welded together.

[0040] This reliable connection device between printed circuit boards uses only one type of terminal 2. The terminal slot 10 of the insertion base 1 ensures the installation accuracy of the terminal 2, and the guide positioning hole 30 of the guide base 3 ensures the guiding and positioning accuracy. This allows for a quick, efficient, and reliable connection between two printed circuit boards 1. Its advantages are: First, using only one type of terminal minimizes axial and radial space requirements, making it particularly suitable for small-pitch connections. The guide positioning hole 30 and the insertion slot 10 are aligned, ensuring consistent overall assembly dimensions. The excellent guiding and fine-tuning capability of the guide positioning hole 30 effectively ensures that the connecting pin 22 of the terminal 2 can be smoothly and quickly inserted into another printed circuit board. Therefore, it is suitable for quick and reliable assembly with small board pitches, allowing for installation in a single fitting, resulting in high installation efficiency, low cost, and high product yield. Second, the small terminal pitch of this structure reduces space requirements. Third, the well-fixed connection position facilitates subsequent soldering processes, eliminating defects such as incomplete soldering, simplifying the assembly process, increasing assembly accuracy, and effectively reducing costs.

[0041] Preferably, the lower surface of the guide base 3 is provided with a rectangular central groove 33, and several equally spaced lower cylinders 32 are integrally connected to the middle of the upper wall of the central groove 33. The central through hole of the lower cylinders 32 is a positioning channel 302. The beneficial effects are: this setting not only further ensures the installation accuracy of the mounting positioning hole, but also makes it convenient to observe whether the assembly is good in the groove space, and also facilitates welding and other processes.

[0042] Furthermore, the guide base 3 has mounting holes 31 with side openings at the middle of both lateral ends. The upper end piece 41 of the welding plate 4 is interference-fitted to the mounting holes 31, and the lower end welding foot 42 is welded to the printed circuit board 00 below. Preferably, the mounting holes 31 are vertical stepped through holes with a convex structure. The lower ends of the inner rectangular holes 311 of the mounting holes 31 have positioning shoulders 312 on both sides. The upper end piece 41 of the welding plate 4 is interference-fitted into the inner rectangular holes 311, and the lower end face is in contact with the positioning shoulders 312. The beneficial effect is that this setting ensures that the guide base 3 has good installation accuracy, the guide positioning hole 30 has high positional accuracy, and the square edge is suitable for subsequent installation.

[0043] Preferably, the upper end piece 41 has elastic protrusions 43 at both ends. The advantages of this feature are that it is easy to assemble and disassemble, and the connection is secure.

[0044] Preferably, the lower end of the welding plate 4 is provided with two horizontally outwardly bent welding feet 42, which are used to weld the welding pieces 5 on the printed circuit board 00 below. The beneficial effect is that the flatness of the mounting base 3 is adjusted by the welding pieces 5, which further improves the installation accuracy.

[0045] Furthermore, the terminal slot 10 is a right-angle slot formed by the perpendicular connection of the longitudinal port 101 on the lower surface of the insertion base 1 and the vertical port 102 on the front side; the intermediate body 20 is a right-angle piece formed by the perpendicular connection of the longitudinal piece 201 and the vertical piece 202. The longitudinal piece 201 and the longitudinal port 101, and the vertical piece 202 and the vertical port 102 are connected with a small clearance fit. The upper end of the vertical piece 202 extends upward integrally to form a small-sized vertical head 21, and the lower rear end of the longitudinal piece 201 extends vertically downward to form a small-sized vertical connecting foot 22. The beneficial effect is that this arrangement can achieve good fixation of the terminal 2 and the terminal slot 10.

[0046] Preferably, a rectangular positioning base block 11 is provided on the rear end of the terminal slot 10, the rear side of the vertical piece 202 is attached to the front side of the positioning base block 11, and the lower side of the longitudinal piece 201 is attached to the upper side of the positioning base block 11. The beneficial effect is that this arrangement further improves the installation accuracy of the terminal 2, providing a good foundation for insertion assembly.

[0047] Preferably, the lower rear wall of the positioning base block 11 is provided with a vertical slot 12, and the upper rear side of the vertical piece 202 is integrally formed with a plug-in pin 203, which is inserted into the vertical slot 12. The beneficial effect is that this setting further improves the positioning accuracy.

[0048] Furthermore, the upper end of the plug-in base 1 is provided with a protruding end block 13, and the two sides of the protruding end block 13 are process notches 14. The protruding end block 13 of the plug-in base 1 is attached to the printed circuit board 00 above. Its advantages are: this setting occupies little space, facilitates installation, and provides space for other processes.

[0049] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A reliable connection device between printed circuit boards, characterized in that, It includes: the connector (01) and the guide (02) arranged between two opposite printed circuit boards (00); The connector (01) includes a connector base (1) and a plurality of connection terminals (2), the connector base (1) is connected to the upper printed circuit board (00) and is provided with a plurality of vertical terminal grooves (10), the middle body (20) of the connection terminal (2) is fixed in the terminal groove (10), the head (21) above the middle body (20) is electrically connected to the fixing hole (001) of the upper printed circuit board (00); The guide base (3) of the guide (02) is fixedly connected to the lower printed circuit board (00) at both ends, the middle of the guide base (3) is provided with a plurality of vertical guide positioning holes (30), the guide positioning hole (30) and the terminal groove (10) are arranged in the same way; A plurality of connecting feet (22) below the middle body (20) pass through the opposite guide positioning holes (30) and are electrically connected to the fixing hole (001) of the lower printed circuit board (00).

2. A reliable inter-printed circuit board connection device as claimed in claim 1, characterized in that The upper end of the guide positioning hole (30) is a reverse taper type guide slide (301), and the lower end is a positioning channel (302), the positioning channel (302) and the connecting foot (22) are connected in small gap fit.

3. A reliable inter-printed circuit board connection device as defined in claim 2, wherein, The middle groove (33) of the lower surface of the guide base (3) is integrally connected with a plurality of lower cylinders (32) on the groove wall, and the center through hole of the lower cylinder (32) is the positioning channel (302).

4. A reliable inter-printed circuit board connection device as defined in claim 2, wherein, The middle mounting hole (31) of the guide base (3) is fixedly connected with the upper end piece (41) of the welding plate (4) by interference, and the welding foot (42) at the lower end of the welding plate (4) is welded with the lower printed circuit board (00) to form an integral body.

5. A reliable inter-printed circuit board connection device as defined in claim 4, wherein, The mounting hole (31) is a vertical stepped through hole, the upper end piece (41) is inserted into the inner rectangular hole (311) of the mounting hole (31) by interference, and the lower end surface is in close contact with the positioning shoulder (312) of the mounting hole (31).

6. A reliable inter-printed circuit board connection device as defined in claim 5, wherein, The lower end of the welding plate (4) is provided with two transversely outwardly bent welding feet (42), and the welding feet (42) are welded with the welding piece (5) on the lower printed circuit board (00).

7. A reliable connection between printed circuit boards according to claim 1, characterized in that, The terminal groove (10) is a right angle groove; the middle body (20) is a right angle piece, the longitudinal piece (201) and the longitudinal port (101), the vertical piece (202) and the vertical port (102) are connected in small gap fit, the vertical piece (202) is integrally extended upward to form the head (21), and the rear end of the longitudinal piece (201) is extended downward to form the connecting foot (22).

8. A reliable inter-printed circuit board connection device as defined in claim 7, wherein, The rear end of the terminal groove (10) is provided with a rectangular positioning base block (11), the rear side of the vertical piece (202) is in close contact with the front side of the positioning base block (11), and the lower side of the longitudinal piece (201) is in close contact with the upper side of the positioning base block (11).

9. A reliable inter-printed circuit board connection device as defined in claim 8, wherein, The lower wall of the rear end of the positioning base block (11) is provided with a vertical insertion slot (12), the rear end of the vertical piece (202) is integrally formed with an insertion foot (203), and the insertion foot (203) is inserted into the vertical insertion slot (12).

10. A reliable inter-printed circuit board connection device as defined in claim 8, wherein, The convex end block (13) of the plug-in base (1) is attached to the upper printed circuit board (00) ; Or the head (21) and the connecting leg (22) are respectively welded with the fixing hole (001) of the two printed circuit boards (00) to form an integral whole.

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