# Patent

## Title
Interconnection of hardware components

## Abstract

A method and related apparatuses for disconnecting components of a hardware assembly. The components each include two connectors configured to disengage in a staged manner so that one set of connectors disconnects before the other set. If power connectivity is provided across one set of connectors, that connection can be configured to end before the connectivity between the other connectors.

## Background
PRIORITY APPLICATION
This application claims the benefit of priority under 35 U.S.C. §119 of U.S. Provisional Application No. 62/051,510 filed on Sep. 17, 2014, the content of which is relied upon and incorporated herein by reference in its entirety.


BACKGROUND
The disclosure relates generally to providing connectivity between components.
Electronic systems can be assembled by connecting modules to other components. A backplane is one type of component that can be used to provide power, data, and other types of connectivity between other components. In some cases, multiple types of connectivity, such as power, data, radio frequency (RF), voice, etc., may be provided to a module via a backplane. Under certain circumstances, it may be desirable that when disconnecting a module from a backplane, that one type of connectivity be terminated before terminating other types of connectivity. Power is one type of connectivity that is often sought to be terminated before other types, typically to avoid damage to sensitive elements due to arcing, etc. A conventional approach is to open a power switch on a front panel of the module prior to disconnecting the module from the backplane. This approach, however, requires that the technician first be aware that the connectivity must be terminated prior to disengaging the component, and further does not account for the situation in which the technician knows to do so, but forgets to open the power switch. Another approach is to integrate an “OFF” switch into an ejection feature of a module. Conventional approaches, however, require a complex mechanical switch arrangement that adds cost to the system.
SUMMARY
According to a first embodiment, a hardware assembly comprises a module engaged with a backplane. The module comprises a module support, a first module connector supported on the module support and having at least one electrical conductor, and a second module connector supported on the module support. The backplane comprises a backplane support, a first backplane connector supported on the backplane support and connected to the first module connector, and a second backplane connector supported on the backplane support and connected to the second module connector. The second backplane can include at least one bias element and a translatable section that is configured to translate relative to the backplane support under a bias of the at least one bias element.
According to another embodiment, a method of disengaging a module from a backplane comprises providing a module comprising a module support, a first module connector supported on the module support and having at least one electrical conductor, and a second module connector supported on the module support. The method further comprises providing a backplane connected to the module and comprising a backplane support, a first backplane connector supported on the backplane support and connected to the first module connector, and a second backplane connector supported on the backplane support and connected to the second module connector. The method further comprises moving the module and backplane away from one another a first distance to cause the first module connector to disconnect from the first backplane connector, wherein the second module connector remains connected to the second backplane connector at the first distance, and further moving the module and backplane away from one another a second distance to cause the second module connector to disconnect from the second backplane connector.
According to one aspect, moving the module out of engagement with the backplane can allow the first module connector and first backplane connector to disconnect prior to disconnection of the second backplane connector from the second module connector. If the first module connector and first backplane connector provide, for example, power connectivity across the backplane and module, disconnection of the power connection can serve to protect components having connectivity across the second connectors.
Additional features and advantages will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments as described herein, including the detailed description which follows, the claims, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description are merely exemplary, and are intended to provide an overview or framework to understanding the nature and character of the claims. The accompanying drawings are included to provide a further understanding, and are incorporated in and constitute a part of this specification. The drawings illustrate one or more embodiment(s), and together with the description serve to explain principles and operation of the various embodiments.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates a hardware assembly including a backplane component connected to a module component according to a first embodiment.
FIG. 2A illustrates the module component and backplane component in an engaged configuration.
FIG. 2B illustrates the module component and backplane component in a disengaged configuration.
FIGS. 3A-3C illustrate the process of disengaging the module component from the backplane component.



DETAILED DESCRIPTION
Reference will now be made in detail to the present preferred embodiment(s), examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts.
FIG. 1 illustrates a hardware assembly 5 including a first component 10 connected to a second component 20 according to a first embodiment. For illustrative purposes, the first component 10 is illustrated schematically as a module, such as a module for providing radio frequency (RF) services 10 via interconnection with the second component 20, which is illustrated as a backplane. The module 10 includes a first module connector 14 and a second module connector 16. The backplane 20 includes a first backplane connector 24 and a second backplane connector 26. The respective first connectors 14, 24, and the respective second connectors 16, 26 are configured to connect when the module 10 is engaged with the backplane 20.
The module 10 comprises a module support 30 that supports the connectors 14, 16, and the backplane 20 comprises a backplane support 34 that supports the connectors 24, 26. In the connected position shown in FIG. 1, the module support 30, which is a generally planar or plate-like or board-like piece, is generally perpendicular to a generally planar facing side of the backplane support 34. In FIG. 1, the backplane 20 is connected to a single example RF module 10 for clarity of illustration, but in practice several modules or other components of various types and configurations may be engaged with the backplane 20. A plurality of additional modules (not illustrated) can be engaged with the backplane 20, for example aligned parallel to the module 10 in side-by-side relationship.
The first module connector 14 and the first backplane connector 24 can be, for example, configured to connect to form one or more conductive paths that enable one or more of digital, voice, RF, data, and power connectivity. The second module connector 16 and the second backplane connector 26 can also be, for example, configured to enable one or more of digital, voice, RF, data, and power connectivity. In the illustrated exemplary embodiment, the first module connector 14 is a female digital and DC power connector, the first backplane connector 24 is a male digital and DC power connector, the second module connector 16 is a female backplane RF connector, and the second backplane connector 26 is a male RF backplane connector. The RF connectors 24, 16, are configured in a plug and jack configuration, and designed to provide connectivity in the RF range (e.g., exceeding 1 MHz).
According to one aspect, the first module connector 14 and first backplane connector 24 are configured to connect and to disconnect in response to the same relative motion between the module 10 and backplane 20 that causes the second module connector 16 to respectively connect and disconnect with the second backplane connector 26. According to one aspect, the respective connectors 14, 24, and 16, 26 may be configured so that, during disconnection, or disengagement, of the backplane 20 and the module 10, power connectivity between the connectors 14, 24 is disconnected before the RF connectivity between the connectors 16, 26 is disconnected.
FIGS. 2A and 2B are schematic, partial section views of the mechanism by which the module 10 and the backplane 20 disengage. In FIG. 2A, the module 10 is engaged with the backplane 20, with the first module connector 14 connected to the first backplane connector 24, and with the second module connector 16 connected to the second backplane connector 26. In this configuration, the first module connector 14 can engage a plurality of conductive elements 36 in the first backplane connector 24 in a conventional male/female interconnection, which brings the connectors 14, 24 into electrical connection over a plurality of conductive paths extending through the module 10 and the backplane 20. The conductive paths can convey, for example, data such as data in digital form, DC current, AC current, and other forms of electrical power and/or transmissions. The conductive paths may further extend from either the module 10 or from the backplane 20 to other components or cables (not illustrated), for example. The conductive paths can further connect to other conductors, conductive path, traces, and/or electronic components (not illustrated) of the module 10 and the backplane 20. The conductive elements 36 can be, for example, conductive metallic pins, wires, or other conductive structures. The first module connector 14 and the first backplane connector 24 can also or in addition to be optical in structure and operation, including, for example, one or more optical connections when engaged.
According to one aspect, the second module connector 16 and the second backplane connector 26 are configured to disconnect from the position shown in FIG. 2A at a time after the first connectors 14, 24 become disconnected. In an exemplary embodiment, disconnecting the first connectors 14, 24 ends power connectivity between the module 10 and backplane 20 across those connectors 14, 24. In order to effect the delay in disconnection, the second backplane connector 26 includes a translatable section 40 that is configured to translate relative to the backplane support 34 along pins 44, under the bias of one or more bias elements 48. The bias elements 48 can be, for example, springs. The translatable section 40 can be, for example, a generally planar piece, such as a plate, having a pair of apertures through which the pins 44 extend. The bias elements 48 can engage a surface 50 of the translatable section 40 and a surface of the backplane support 34 to bias the translatable section 40 away from the support 34 during disengagement of the module 10 and backplane 20. The direction of translation is along an axis A-A that can be, for example, generally perpendicular to the generally planar facing surface 50 of the backplane support 34. When the hardware assembly 5 is in the engaged or connected position of FIG. 2A, the bias elements 48 are fully compressed.
FIG. 2B illustrates disengagement of the module 10 and backplane 20. Referring to FIG. 2B, as the module 10 is moved away from the backplane 20, along the axis A-A and in the direction of arrow B, the first module connector 14 disengages from the first backplane connector 24, ending connectivity across the connectors 14, 24, and accordingly ending connectivity between the module 10 and the backplane 20 across connectors 14, 24. In one embodiment, the connection includes connectivity of at least one of DC power, AC power, and data. The second module connector 16 also disengages from the second backplane connector 26, but the disconnection is delayed as the bias elements 48 push the translatable section 40 away from the backplane support 34 and towards the module 10 so as to cause the connector 26 to remain connected to the second module connector 16. The exemplary second module connector 16 includes a female receptacle 62 that receives a conductive male projection 64 of the second backplane connector 26, such as in a coaxial RF connection. Further movement of the backplane 20 away from the module 10 causes the projection 64 to pull out of the female receptacle 62 to disconnect the second connectors 16, 26. The second backplane connector 26 also includes a conductor 66 that disconnects from electrical contact with the connector 16. In coaxial RF connectors, the conductor 66 is sometimes referred to as a “center conductor”.
FIGS. 3A-3C are side elevation views illustrating the disengagement process between the module 10 and the backplane 20. In FIG. 3A, the first module connector 14 is connected to the first backplane connector 24, and the second module connector 16 is connected to the second backplane connector 26. In FIG. 3B, the module 10 has been moved to the left in FIG. 3B a first distance that is sufficient to disconnect the first connectors 14, 24, but not a sufficient distance so that the translatable section 40 of the second backplane connector 26 allows the connector 26 to disconnect from the second module connector 16. If the first connectors 14, 24 provide power connectivity, power connectivity between the module 10 and backplane 20 is ended at this step. In FIG. 3C, the module 10 has been moved a second distance that is far enough so that the translatable section 40 reaches the extent of its motion away from the backplane support 34, and the second backplane connector 26 becomes disconnected from the second module connector 16. In this manner, any electrical connectivity across the connectors 14, 24, including any power connections, is ended before the connection between the connectors 16, 26.
The module 10 can be reengaged with the backplane 20 by aligning the connectors 14, 24, and the connectors 16, 26, and moving the module 10 and the backplane 20 towards each other. The second backplane connector 26 can be extended outwardly during reconnection to ensure it connects with the second module connector 16 before the connectors 14, 24 establish conductive connectivity.
In the illustrated embodiments, the module 10 and backplane 20 are shown as moved away from one another by pulling the module 10 away from the backplane 20, and moved toward one another by pushing the module 10 into connecting engagement with the backplane 20. The module 10 and backplane 20 can also be moved away from one another by movement of the backplane 20, and/or by moving both the module 10 and the backplane 20. In this specification, a statement that the module 10 and backplane 20 are moved away from one another, or moved toward each other, shall include relative motion caused either by motion of the module 10 or the backplane 20, or both.
According to the present embodiments, a “backplane” can be an arrangement of connectors arranged on a generally planar support. A backplane can be used as a backbone for connecting multiple circuit boards, for example. The backplane can include, for example, printed circuit board(s) for connectivity, and can be active or passive. A “backplane” may be an interconnect that provides connectivity to devices on both sides of the component, a configuration sometimes referred to as a “midplane”, and further include components such as motherboards. The term “backplane” as used in this specification is intended to encompass all such applications.
Unless otherwise expressly stated, it is in no way intended that any method set forth herein be construed as requiring that its steps be performed in a specific order. Accordingly, where a method claim does not actually recite an order to be followed by its steps or it is not otherwise specifically stated in the claims or descriptions that the steps are to be limited to a specific order, it is no way intended that any particular order be inferred.
It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the invention. Since modifications combinations, sub-combinations and variations of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and their equivalents.

## Claims

1. A method of disengaging a module from a backplane, comprising:
providing a module, comprising: a module support; a first module connector supported on the module support and comprising at least one electrical conductor; and a second module connector supported on the module support;
providing a backplane engaged with the module, comprising: a backplane support; a first backplane connector supported on the backplane support and connected to the first module connector; and a second backplane connector supported on the backplane support and connected to the second module connector;
moving the module and backplane away from one another a first distance to cause the first module connector to disconnect from the first backplane connector, wherein the second module connector remains connected to the second backplane connector at the first distance; and
further moving the module and backplane away from one another a second distance to cause the second module connector to disconnect from the second backplane connector.

2. The method of claim 1, wherein the second backplane connector comprises at least one bias element and a translatable section, and wherein moving the module and backplane away from one another the first distance causes the translatable section to translate relative to the backplane support under a bias of the at least one bias element.

3. The method of claim 2, wherein:
the translatable section comprises a plate having at least one aperture, and
the at least one bias element comprises at least one pin extending through the at least one aperture, and at least one spring that engages the plate and that is arranged on the pin.

4. The method of claim 1, wherein the at least one electrical conductor of the first backplane connector comprises a plurality of electrical conductors, and wherein prior to disengagement of the module from the backplane, a plurality of conductive paths extend through the module and the backplane in part via the plurality of electrical conductors.

5. The method of claim 1, wherein when connected, the first module connector and the first backplane connector are configured establish at least one of a power and a data connection between the module and the backplane, and the second module connector and the second backplane connector are configured establish an RF connection between the module and the backplane.

6. The method of claim 1, wherein the module support includes a plate section and the backplane support has a generally planar facing surface, and wherein moving the module and backplane away from one another the first distance comprises moving the module along a direction generally parallel to the plate section of the module support.