This application claims priority to Chinese Application No. 201710996757.4, filed Oct. 19, 2017, which is incorporated herein by reference in its entirety.
The present disclosure relates to an electrical connection module, especially to an electrical connection module and a board-to-board electrical connection device for connecting two circuit boards.
In an existing electrical connection system for connecting a flexible circuit board and a circuit board, for example as disclosed in U.S. Pat. No. 7,014,475, in which two ends of the flexible circuit board are respectively connected to two surfaces of a circuit board, an electrical connector is provided in the middle of the flexible circuit board. Also an connection system, for example disclosed in U.S. Pat. No. 6,520,789, is a technology using the flexible circuit board to connect two circuit boards, which directly electrically connect a circuit of the flexible circuit board with circuits of upper and lower circuit boards by the clamping pressure without a connector, such a method using structural bumps for clamping to establish an electrical connection between the circuit boards is not only prone to a poor contact, but also unsuitable for high-rate multi-signal transmission.
Furthermore, the board-to-board electrical connection between two circuit boards generally employs two connectors, but when the spacing between the two circuit boards is too large, the terminals of the two mated connectors need to be long, so the impedance of the terminal would increase, and the contact normal three between the long terminals would reduce, which is not beneficial to high-rate signal transmission.
Another common board-to-board connection is to use an intermediate adapter connector to mate with the connectors on the two circuit boards, but such a configuration also increases the impedance among the three sets of terminals, which is not beneficial to high-rate signal transmission.
Moreover, for the mating between the above-mentioned connectors, if the position between the two circuit boards generates a larger deviation, the connectors cannot be complementary.
Therefore, an object of the present disclosure is to provide an electrical connection module which may compensate for position deviation of two circuit boards and absorb external force.
Accordingly, in some embodiments, an electrical connection module in the present disclosure comprises an upper plate, a first connector, a lower plate, a plurality of supporting guide assemblies, a plurality of elastic members, an electrical connecting unit and a flexible circuit board. The first connector is provided to the upper plate. The lower plate is spaced apart from the upper plate and positioned below the upper plate. The plurality of supporting guide assemblies connects the upper plate and the lower plate and allow that the upper plate can move relative to the lower plate in a plane direction of the plate surface thereof and an up-down direction. The plurality of elastic members is respectively provided between the upper plate and the lower plate to provide elastic supporting forces for the upper plate. The electrical connecting unit is provided to the lower plate. The flexible circuit board has an upper connecting portion electrically connected to the first connector and a lower connecting portion electrically connected to the electrical connecting unit.
In some embodiments, the upper plate has a plurality of guiding holes penetrating in the up-down direction, the plurality of the guiding holes respectively allows the plurality of the supporting guide assemblies to pass through, and a hole diameter of each guiding hole is larger than an outer diameter of the corresponding supporting guide assembly.
In some embodiments, each supporting guide assembly comprises a supporting column and an upper limiting member, a lower end of the supporting column is fixed to the lower plate, the supporting column passes through the corresponding guiding hole and the outer diameter of the supporting column is smaller than the hole diameter of the guiding hole, the upper limiting member is positioned at an upper end of the supporting column and above the upper plate, an outer diameter of the upper limiting member is larger than the hole diameter of the corresponding guiding hole to limit an uppermost position of the upper plate where the upper plate moves upwardly, the plurality of the elastic members are respectively sheathed on the plurality of the supporting columns.
In some embodiments, the electrical connection module further comprises a plurality of upper stopping blocks, the plurality of the upper stopping blocks is provided to the upper plate to limit an mating depth between the first connector and a complementary connector.
In some embodiments, each supporting guide assembly further comprises a lock member to connect the supporting column and the upper limiting member.
In some embodiments, an upper surface of the upper plate is provided with a conductive trace, the first connector and the upper connecting portion of the flexible circuit board are mechanically and electrically connected with the conductive trace, the first connector and the flexible circuit board are electrically connected via the conductive trace.
In some embodiments, the upper connecting portion of the flexible circuit board is provided to an upper surface of the upper plate, the first connector is provided to the upper connecting portion and mechanically and electrically connected with the upper connecting portion.
In some embodiments, a lower surface of the lower plate is provided with a conductive trace, the electrical connecting unit consists of a plurality of soldering members, the plurality of the soldering members are mounted in the lower surface of the lower plate and electrically connected with the conductive trace of the lower plate, the lower connecting portion of the flexible circuit board is mechanically and electrically connected with the conductive trace of the lower plate, the electrical connecting unit and the flexible circuit board are electrically connected via the conductive trace of the lower plate.
In some embodiments, the lower connecting portion of the flexible circuit board is provided to a lower surface of the lower plate, the electrical connecting unit consists of the plurality of soldering members, the plurality of the soldering members are mounted in the lower connecting portion to be electrically connected with the flexible circuit board.
In some embodiments, the lower connecting portion of the flexible circuit board is provided to a lower surface of the lower plate, the electrical connection module further comprises a second connector, the second connector is provided to the lower connecting portion and mechanically and electrically connected with the lower connecting portion.
In some embodiments, a lower surface of the lower plate is provided with a conductive trace, the electrical connection module further comprises a second connector, the second connector and the lower connecting portion of the flexible circuit board are mechanically and electrically connected with the conductive trace of the lower plate, the second connector and the flexible circuit board are electrically connected via the conductive trace of the lower plate.
Another object of the present disclosure is to provide a board-to-board electrical connection device comprising the aforementioned electrical connection module.
Accordingly, in some embodiments, the board-to-board electrical connection device in the present disclosure comprises an upper circuit board, a first complementary connector provided to the upper circuit board, a lower circuit board; and an electrical connection module. The electrical connection module electrically connects the upper circuit board and the lower circuit board, and comprises an upper plate, a first connector, a lower plate, a plurality of supporting guide assemblies, a plurality of elastic members, an electrical connecting unit and a flexible circuit board. The first connector is provided to the upper plate to be mated with the first complementary connector. The lower plate is spaced apart from the upper plate and positioned below the upper plate. The plurality of supporting guide assemblies connect the upper plate and the lower plate and allow that the upper plate can move relative to the lower plate in a plane direction of a plate surface of the upper plate and the up-down direction. The plurality of elastic members are provided between the upper plate and the lower plate to provide elastic supporting forces for the upper plate. The electrical connecting unit is provided to the lower plate to be electrically connected with the lower circuit board. The flexible circuit board has an upper connecting portion electrically connected to the first connector and a lower connecting portion electrically connected to the electrical connecting unit.
In some embodiments, the upper plate has a plurality of guiding holes penetrating in the up-down direction, the plurality of the guiding holes respectively allow the plurality of the supporting guide assemblies to pass through, and a hole diameter of each guiding hole is larger than an outer diameter of the corresponding supporting guide assembly.
In some embodiments, each supporting guide assembly comprises a supporting column and an upper limiting member, a lower end of the supporting column is fixed to the lower plate, the supporting column passes through the corresponding guiding hole and the outer diameter of the supporting column is smaller than the hole diameter of the guiding hole, the upper limiting member is positioned at an upper end of the supporting column and above the upper plate, an outer diameter of the upper limiting member is larger than the hole diameter of the corresponding guiding hole to limit an uppermost position of the upper plate where the upper plate moves upwardly, the plurality of the elastic members are respectively sheathed on the plurality of the supporting columns.
In some embodiments, the electrical connection module further comprises a plurality of upper stopping blocks, the plurality of the upper stopping blocks are provided to the upper plate to limit an mating depth between the first connector and a complementary connector.
In some embodiments, each supporting guide assembly further comprises a lock member to connect the supporting column and the upper limiting member.
In some embodiments, the upper circuit board and the lower circuit hoard are respectively fixed, and the upper circuit board is fixed at a position such that the upper plate compresses the plurality of the elastic members and a gap is formed between the upper plate and the plurality of the upper limiting members.
In some embodiments, an upper surface of the upper plate is provided with a conductive trace, the first connector and the upper connecting portion of the flexible circuit board are mechanically and electrically connected with the conductive trace, the first connector and the flexible circuit board are electrically connected via the conductive trace.
in some embodiments, the upper connecting portion of the flexible circuit board is provided to an upper surface of the upper plate, the first connector is provided to the upper connecting portion and mechanically and electrically connected with the upper connecting portion.
In some embodiments, a lower surface of the lower plate is provided with a conductive trace, the electrical connecting unit consists of a plurality of soldering members, the plurality of the soldering members are mounted in the lower surface of the lower plate and electrically connected with the conductive trace of the lower plate, the lower connecting portion of the flexible circuit board is mechanically and electrically connected with the conductive trace of the lower plate, the electrical connecting unit and the flexible circuit board are electrically connected via the conductive trace of the lower plate.
In some embodiments, the lower connecting portion of the flexible circuit board is provided to a lower surface of the lower plate, the electrical connecting unit consists of the plurality of soldering members, the plurality of the soldering members are mounted in the lower connecting portion to be electrically connected with the flexible circuit board.
In sonic embodiments, the board-to-board electrical connection device further comprises a second complementary connector provided to the lower circuit board, the lower connecting portion of the flexible circuit board is provided to a lower surface of the lower plate, the electrical connection module further comprises a second connector to be mated with the second complementary connector, the second connector is provided to the lower connecting portion and mechanically and electrically connected with the lower connecting portion.
In sonic embodiments, the board-to-board electrical connection device further comprises a second complementary connector provided to the lower circuit board, a lower surface of the lower plate is provided with a conductive trace, the electrical connection module further comprises a second connector to be mated with the second complementary connector, the second connector and the lower connecting portion of the flexible circuit board are mechanically and electrically connected with the conductive trace of the lower plate, the second connector and the flexible circuit board are electrically connected via the conductive trace of the lower plate.
In some embodiments, the first connector has the same structure as the first complementary connector, and the second connector has the same structure as the second complementary connector.
In some embodiments, the first connector, the first complementary connector, the second connector and the second complementary connector are Mezzanine connectors.
In some embodiments, the flexible circuit board is provided with an electronic component for adapter signal processing.
In some embodiments, a sum of the elastic forces which the plurality of the elastic members are applied to the upper plate is larger than a mating force between the first connector and the first complementary connector.
The present disclosure at least has the following beneficial effects: the upper plate can move in the three-dimension direction and the plurality of elastic members elastically support the upper plate in the up-down direction, which can not only compensate the deviation of the relative position of the upper circuit board and the lower circuit board so that the first connector and the first complementary connector can be accurately aligned with and mated with each other, but also allow that the first connector and the first complementary connector are firmly mated with each other under the elastic forces that the plurality of elastic members are applied to the upper plate and also absorb the forces generated by the external environment, such as movement, vibration or improper external forces.
The other features and effects of the present disclosure will be apparent in the detailed description in combination with the accompanying figures, and in which:
Before the present disclosure is described in detail, it should be noted that similar element is indicated by the same reference numeral in the following description.
Referring to
The electrical connection module 1 comprises an upper plate 11, a first connector 12, a lower plate 13, a plurality of supporting guide assemblies 14, a plurality of elastic members 15, a flexible circuit board 16, an electrical connecting unit 17 and a plurality of upper stopping blocks 18. The first connector 12 is provided to the upper plate 11, so as to be mated with the first complementary connector 3 in the embodiment, the first connector 12 has the same structure as the first complementary connector 3, specifically is a Mezzanine connector. The plurality of supporting guide assemblies 14 connect the upper plate 11 and the lower plate 13 to allow the lower plate 13 to be spaced apart from the upper plate 11 and positioned below the upper plate 11 and allow that the upper plate 11 can move relative to the lower plate 13 in a plane direction (that is a X-Y plane) of a plate surface thereof and an up-down direction (that is a Z-axis direction). The plurality of elastic members 15 are respectively sheathed onto the plurality of supporting guide assemblies 14 and between the upper plate 11 and the lower plate 13 to provide elastic supporting forces for the upper plate 11. In the first embodiment, the plurality of elastic members 15 are springs, but in a varied embodiment, the plurality of elastic members 15 can also for example cylindrical elastomers. The flexible circuit board 16 has an upper connecting portion 161 connected to the upper plate 11 and a lower connecting portion 162 connected to the lower plate 13. In the first embodiment, an upper surface of the upper plate 11 is provided with a conductive trace (not shown in figures), the first connector 12 and the upper connecting portion 161 of the flexible circuit board 16 are mechanically and electrically connected with the conductive trace, the first connector 12 the flexible circuit board 16 are electrically connected via the conductive trace. Moreover, in the first embodiment, the lower connecting portion 162 of the flexible circuit board 16 is provided to a lower surface of the lower plate 13, the electrical connecting unit 17 consists of a plurality of soldering members 171 (such as soldering balls), the plurality of soldering members 171 are mounted in the lower connecting portion 162 to be electrically connected with the flexible circuit board 16. Further referring to
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In conclusion, the upper plate 11 can move in the three-dimension direction and the plurality of elastic members 15 elastically support the upper plate 11 in the up-down direction, which can not only compensate the deviation of the relative position of the upper circuit board 2 and the lower circuit board 4 so that the first connector 12 and the first complementary connector 3 can be accurately aligned with and mated with each other, but also allow that the first connector 12 and the first complementary connector 3 are firmly mated with each other under the elastic threes that the plurality of elastic members 15 are applied to the upper plate 11 and also absorb the forces generated by the external environment, such as movement, vibration or improper external forces. In an embodiment, the flexible circuit board 16 may be arranged with an electronic component thereon for adapter and signal processing, which facilitates the adapter transmission of high-rate signals between the upper circuit board 2 and the lower circuit board 4 and can reduce the number of the electronic component arranged on the two circuit boards.
However, the above described are only the embodiments of the present disclosure, which cannot limit the scope of the implementation of the present disclosure, that is, simple equivalent variations and modifications made according to the scope of the claims and the description content of the present disclosure are still within the scope of the present disclosure.
Number | Date | Country | Kind |
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2017 1 0996757 | Oct 2017 | CN | national |
Number | Name | Date | Kind |
---|---|---|---|
5161981 | Deak | Nov 1992 | A |
5163836 | Young | Nov 1992 | A |
5917149 | Barcley | Jun 1999 | A |
6342932 | Terao | Jan 2002 | B1 |
6520789 | Daugherty, Jr. | Feb 2003 | B2 |
6869291 | Norland | Mar 2005 | B2 |
7014475 | Mongold | Mar 2006 | B1 |
7503769 | Ohtsuki | Mar 2009 | B2 |
7837481 | Mahoney et al. | Nov 2010 | B1 |
8251712 | Cheng | Aug 2012 | B2 |
9955596 | Voss | Apr 2018 | B2 |
20040053519 | Li | Mar 2004 | A1 |
20060073723 | Cowgill et al. | Apr 2006 | A1 |
20100055936 | Chen et al. | Mar 2010 | A1 |
20170237190 | Liao | Aug 2017 | A1 |
Number | Date | Country |
---|---|---|
201417834 | Mar 2010 | CN |
202585902 | Dec 2012 | CN |
204289986 | Apr 2015 | CN |
486170 | May 2002 | TW |
Number | Date | Country | |
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20190148852 A1 | May 2019 | US |