Patent Application
20150318630
Embodiments generally relate to edge finger connectors, and more particularly, to a double edge finger connector that increases connector density without reducing pitch.
Connector density requirements have increased from one generation to the next. While the demand for densification has increased, connector pitch reduction capability has several limitations. For example, smaller contacts are not generally capable of providing the mechanical force and compliance requirements to meet reliability targets. Smaller contacts are also not generally capable of absorbing variations in manufacturing tolerances. Moreover, signal integrity challenges such as cross-talk increases exponentially as contacts are spatially closer to each other.
The various advantages of the embodiments will become apparent to one skilled in the art by reading the following specification and appended claims, and by referencing the following drawings, in which:
As illustrated in the
The first board 26 has a first edge finger with first electrical pads on upper 26a and lower 26b sides thereof to route electrical signals to/from the first board 26 to one or more electrical components. For example, the first electrical pads 26a, 26b may be disposed in a row at the upper side and/or the lower side of the first edge finger. The first electrical pads 26a, 26b may be aligned in parallel on the first edge finger, or alternatively, in any required spatial arrangement.
The second board 36 has a second edge finger with second electrical pads on upper 36a and lower 36b sides thereof to route electrical signals to/from the second board 36 to one or more electrical components. For example, the second electrical pads 36a, 36b may be disposed in a row at the upper side and/or the lower side of the second edge finger. The second electrical pads 36a, 36b may be aligned in parallel on the second edge finger of the second board 36, or alternatively, in any required spatial arrangement.
The first connector body 21 includes spaced apart and opposing first extensions or arms 22, 23 extending in parallel to each other to define a first slot 25 configured to receive the second edge finger of the second board 36. In the insertion position, a row of first contacts 24a arranged in the upper first arm 22 and a row of first contacts 24b arranged in the lower first arm 23 may contact a corresponding one of the second electrical pads 36a, 36b when the second edge finger is received into the first slot 25. In the inserted position, the second board 36 is at least partially supported on the first connector body 21. In a mated position of the connectors 20, 30, the first connector body 21 is at least partially supported on the second board 36.
The second connector body 31 includes spaced apart and opposing second extensions or arms 32, 33 extending in parallel to each other to define a second slot 35 configured to receive the first edge finger of the first board 26. In the insertion position, a row of second contacts 34a arranged in the upper second arm 32 and a row of second contacts 34b arranged in the lower second arm 33 may contact a corresponding one of the first electrical pads 26a, 26b when the first edge finger is received into the second slot 35. In a mated position of the connectors 20, 30, the second board 36 is at least partially supported on the first connector body 21.
By attaching a pair of dual edge finger-type connectors 20, 30, on respective boards 26, 36, the overall number of contacts rows may be doubled from two to four. Accordingly, embodiments serve to increase the overall number of contact rows, particularly for a horizontal B2B-type connector. Moreover, such a design permits horizontal or lateral motion of the second board 36 of the board during a mating/unmating sequence.
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Likewise, pivotal movement of the second board 36 relative to the first connector 20 is constrained or otherwise restricted at two specific areas. The first area 50 of constrained movement is caused at least partially by the first arms 22, 23 at or adjacent to the first slot 25, while the second area 51 of constrained movement (e.g., downward rotation) is caused by the second connector 30.
The connector design in accordance with embodiments may be beneficial for certain applications.
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For instance, in accordance with embodiments, the first connector body 521 includes spaced apart and opposing first connector extensions or arms 522, 523 extending in parallel to each other to define a first slot 525 configured to receive the second edge finger of the second board 536. The second connector body 531 includes spaced apart and opposing second extensions or arms 532, 533 extending in parallel to each other to define a second slot 535 configured to receive the first edge finger of the first board 526.
A region of an inner surface of each respective one of the first and second connector arms 522, 523, 532, 533 is recessed to permit rotation of a corresponding board 526, 536 when the first board 526 and the second board 536 are electrically and mechanically connected. Accordingly, the slots 525, 535 each comprise a cutout that provides a clearance to permit each respective board 526, 536 to rotate, thereby complying to the mismatch in thicknesses of the boards 526, 536. An amount of rotation may be tolerated by the flexure of the boards 526, 536, and also the contacts. The contacts may comprise a bias mechanism such as, for example, a spring which is configured to absorb some of the dimensional mismatch between boards 526, 536.
As illustrated in
Illustrated processing block 610 may include providing a pair of connectors each defining a slot and mounted to a respective board having an edge finger with electrical pads on upper and lower sides thereof to route electrical signals to or from the board.
Illustrated processing block 620 may include establishing an electrical connection between the boards by inserting the edge finger into the corresponding slot such that the slots are permit horizontal displacement of the corresponding edge finger relative thereto.
Additional Notes and Examples:
Example One may include an apparatus to connect edge fingers, comprising a pair of connecting means each defining a slot and mounted to a respective board having an edge finger with electrical pads on upper and lower sides thereof to route electrical signals to or from the board, wherein each slot is configured to receive and permit horizontal displacement of a corresponding edge finger relative thereto, to thereby establish an electrical connection between the boards.
Example Two may include the apparatus of Example One, the connecting means each comprise a first connector and a second connector, and the boards comprises a first board upon which the first connector is mounted and a second board upon which the second connector is mounted.
Example Three may include the apparatus of Example Two, wherein the first connector comprises a first connector body having first contacts arranged in upper and lower opposing rows in the first slot and which contact the second electrical pads when the second edge finger is received into the first slot.
Example Four may include the apparatus of any one of Examples Two and Three, wherein the second connector comprises a second connector body having second contacts arranged in upper and lower opposing rows in the second slot and which contact the first electrical pads when the first edge finger is received into the second slot.
Example Five may include the apparatus of Example Two, wherein the first connector comprises a first connector body having a pair of first connector body extensions extending spaced apart and in parallel to define the first slot.
Example Six may include the apparatus of Example Five, wherein a region of an inner surface of each respective one of the first connector body extensions is recessed to permit rotation of the second board when the first board and the second board are electrically and mechanically connected.
Example Seven may include the apparatus of any one of Examples Two and Five, wherein the second connector comprises a second connector body having a pair of second connector body extensions extending spaced apart and in parallel to define the second slot.
Example Eight may include the apparatus of Example Seven, wherein a region of an inner surface of each respective one of the second connector body extensions is recessed to permit rotation of the first board when the first board and the second board are electrically and mechanically connected.
Example Nine may include a system that utilizes edge connectors, comprising a package assembly including a pair of packages having connecting means defining a slot and mounted to a respective board having an edge finger with electrical pads on upper and lower sides thereof to route electrical signals to or from the board, wherein each slot is configured to receive and permit horizontal displacement of a corresponding edge finger relative thereto, to thereby establish an electrical connection between the boards.
Example Ten may include the system of Example Nine, wherein the connectors comprise a first connector and a second connector; and the boards comprises a first board upon which the first connector is mounted and a second board upon which the second connector is mounted.
Example Eleven may include the system of Example Ten, wherein the first connector comprises a first connector body having first contacts arranged in upper and lower opposing rows in the first slot and which contact the second electrical pads when the second edge finger is received into the first slot.
Example Twelve may include the system of Example Ten, wherein the second connector comprises a second connector body having second contacts arranged in upper and lower opposing rows in the second slot and which contact the first electrical pads when the first edge finger is received into the second slot.
Example Thirteen may include the system of Example Ten, wherein the first connector comprises a first connector body having a pair of first connector body extensions extending spaced apart and in parallel to define the first slot.
Example Fourteen may include the system of Example Thirteen, wherein a region of an inner surface of each respective one of the first connector body extensions is recessed to permit rotation of the second board when the first board and the second board are electrically and mechanically connected.
Example Fifteen may include the system of Example Ten, wherein the second connector comprises a second connector body having a pair of second connector body extensions extending spaced apart and in parallel to define the second slot.
Example Sixteen may include the system of Example Fifteen, wherein a region of an inner surface of each respective one of the second connector body extensions is recessed to permit rotation of the first board when the first board and the second board are electrically and mechanically connected.
Example Seventeen may include a method, comprising providing a pair of connectors each defining a slot and mounted to a respective board having an edge finger with electrical pads on upper and lower sides thereof to route electrical signals to or from the board and establishing an electrical connection between the boards by inserting the edge finger into the corresponding slot such that the slots are permit horizontal displacement of the corresponding edge finger relative thereto.
Example Eighteen may include the method of Example Seventeen, wherein the connectors comprise a first connector and a second connector, and the boards comprise a first board upon which the first connector is mounted and a second board upon which the second connector is mounted.
Example Nineteen may include the method of Example Eighteen, wherein the first connector comprises a first connector body having first contacts arranged in upper and lower opposing rows in the first slot and which contact the second electrical pads when the second edge finger is received into the first slot.
Example Twenty may include the method of Example Eighteen, wherein the second connector comprises a second connector body having second contacts arranged in upper and lower opposing rows in the second slot and which contact the first electrical pads when the first edge finger is received into the second slot.
Example Twenty-One may include the method of Eighteen, wherein the first connector comprises a first connector body having a pair of first connector body extensions extending spaced apart and in parallel to define the first slot.
Example Twenty-Two may include the method of Example Twenty-One, wherein a region of an inner surface of each respective one of the first connector body extensions is recessed to permit rotation of the second board when the first board and the second board are electrically and mechanically connected.
Example Twenty-Three may include the method of Example Eighteen, wherein the second connector comprises a second connector body having a pair of second connector body extensions extending spaced apart and in parallel to define the second slot.
Example Twenty-Four may include the method of Example Twenty-Three, wherein a region of an inner surface of each respective one of the second connector body extensions is recessed to permit rotation of the first board when the first board and the second board are electrically and mechanically connected.
Example Twenty-Five may include an apparatus, comprising a first printed circuit board (PCB) coupled to a first dual row edge finger type connector, the first dual row edge finger type connector to be electrically coupled to a second PCB, the first PCB having a first row of contacts disposed on an upper side of first PCB, and a second row of contacts disposed on a bottom side of the first PCB, wherein the first and second row of contacts are to be electrically coupled to a second dual row edge finger type connector to be disposed on the second PCB.
Embodiments are applicable for use with all types of computing devices, such as, for example, a smart phone, mobile Internet device (MID), smart tablet, convertible tablet, notebook computer, a server, a laptop, a netbook, a notebook, an ULTRABOOK, a smartphone, a tablet, a personal digital assistant (PDA), an ultra mobile PC, a mobile phone, a desktop computer, a printer, a scanner, a monitor, a set-top box, an entertainment control unit, a digital camera, a portable music player, a digital video recorder, and any other electronic device that processes data.
Embodiments may include any suitable combination of the above-described embodiments. Furthermore, some embodiments may include one or more non-transitory computer-readable media having instructions, stored thereon, that when executed result in actions of any of the above-described embodiments. Moreover, some embodiments may include apparatuses or systems having any suitable means for carrying out the various operations of the above-described embodiments.
The term “coupled” or “connected” may be used herein to refer to any type of relationship, direct or indirect, between the components in question, and may apply to electrical, mechanical, fluid, optical, electromagnetic, electromechanical or other connections. In addition, the terms “first,” “second,” etc. are used herein only to facilitate discussion, and carry no particular temporal or chronological significance unless otherwise indicated.
Those skilled in the art will appreciate from the foregoing description that the broad techniques of the embodiments can be implemented in a variety of forms. Therefore, while the embodiments have been described in connection with particular examples thereof, the true scope of the embodiments should not be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, specification, and following claims.
