# Patent

## Title
Low insertion force connector coupling

## Abstract

A low insertion force connector coupling apparatus includes a low insertion force connector body. A cable channel is defined by the low insertion force connector body. A plurality of low insertion force connector contact members are located on the low insertion force connector body adjacent to the cable channel. A cable securing member is located adjacent the cable channel and is operable to engage a cable coupling member on a cable such that a plurality of flat flexible cable contact members on the cable may not be disengaged from the plurality of low insertion force connector contact members without disengagement of the first cable securing member and the cable coupling member.

## Background
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority to and is a divisional of co-owned co-pending U.S. patent application Ser. No. 11/609,059, filed Dec. 11, 2006, which is incorporated herein by reference in its entirety.


BACKGROUND
The present disclosure relates generally to information handling systems, and more particularly to a low insertion force connector coupling for an information handling system.
As the value and use of information continues to increase, individuals and businesses seek additional ways to process and store information. One option is an information handling system (IHS). An IHS generally processes, compiles, stores, and/or communicates information or data for business, personal, or other purposes. Because technology and information handling needs and requirements may vary between different applications, IHSs may also vary regarding what information is handled, how the information is handled, how much information is processed, stored, or communicated, and how quickly and efficiently the information may be processed, stored, or communicated. The variations in IHSs allow for IHSs to be general or configured for a specific user or specific use such as financial transaction processing, airline reservations, enterprise data storage, or global communications. In addition, IHSs may include a variety of hardware and software components that may be configured to process, store, and communicate information and may include one or more computer systems, data storage systems, and networking systems.
Some IHSs utilize flat and flexible wires for coupling sub-systems together. IHSs such as, for example, notebook computers, often utilize wires known as flat flexible cables (FFC). FFCs are typically coupled to an IHS with a low insertion force (LIF) connector. Conventionally, a LIF connector relies on the friction between the electrical contacts to keep the FFC coupled to the IHS. Thus, the insertion force required to couple the FFC to the IHS is proportional to the retention force between the electrical contacts. As the insertion force is reduced, the retention force is also reduced resulting in an increased likelihood that the FFC will become disconnected. When the FFC becomes disconnected, a factory failure or a latent customer failure occurs, which increases costs and results in a poor customer experience.
Accordingly, it would be desirable to provide an LIF connector coupling absent the disadvantages found in the prior methods discussed above.
SUMMARY
According to one embodiment, an LIF connector coupling apparatus includes a LIF connector body, a cable channel defined by the LIF connector body, a plurality of LIF connector contact members located on the LIF connector body adjacent to the cable channel, and a first cable securing member located adjacent the cable channel and operable to engage a cable coupling member on a cable such that a plurality of FFC contact members on the cable may not be disengaged from the plurality of LIF connector contact members without disengagement of the first cable securing member and the cable coupling member.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view illustrating an embodiment of an IHS.
FIG. 2a is a perspective view illustrating an embodiment of a cable.
FIG. 2b is a cross sectional view illustrating an embodiment of the cable of FIG. 2a. 
FIG. 3a is a perspective view illustrating an embodiment of an LIF connector used with the cable of FIGS. 2a and 2b. 
FIG. 3b is a cross sectional view illustrating an embodiment of the LIF connector of FIG. 3a. 
FIG. 4a is a flow chart illustrating an embodiment of a method for coupling a cable to an LIF connector.
FIG. 4b is a perspective view illustrating an embodiment of the cable of FIGS. 2a and 2b being coupled to the LIF connector of FIGS. 3a and 3b. 
FIG. 4c is a cross sectional view illustrating an embodiment of the cable of FIGS. 2a and 2b being coupled to the LIF connector of FIGS. 3a and 3b. 
FIG. 4d is a perspective view illustrating an embodiment of the cable of FIGS. 2a and 2b coupled to the LIF connector of FIGS. 3a and 3b. 
FIG. 4e is a cross sectional view illustrating an embodiment of the cable of FIGS. 2a and 2b coupled to the LIF connector of FIGS. 3a and 3b. 
FIG. 5a is a cross sectional view illustrating an alternative embodiment of an LIF connector.
FIG. 5b is a flow chart illustrating an alternative embodiment of a method for coupling a cable to an LIF connector.
FIG. 5c is a cross sectional view illustrating an embodiment of the cable of FIGS. 2a and 2b being coupled to the LIF connector of FIG. 5a. 



DETAILED DESCRIPTION
For purposes of this disclosure, an IHS may include any instrumentality or aggregate of instrumentalities operable to compute, classify, process, transmit, receive, retrieve, originate, switch, store, display, manifest, detect, record, reproduce, handle, or utilize any form of information, intelligence, or data for business, scientific, control, entertainment, or other purposes. For example, an IHS may be a personal computer, a PDA, a consumer electronic device, a network server or storage device, a switch router or other network communication device, or any other suitable device and may vary in size, shape, performance, functionality, and price. The IHS may include memory, one or more processing resources such as a central processing unit (CPU) or hardware or software control logic. Additional components of the IHS may include one or more storage devices, one or more communications ports for communicating with external devices as well as various input and output (I/O) devices, such as a keyboard, a mouse, and a video display. The IHS may also include one or more buses operable to transmit communications between the various hardware components.
In one embodiment, IHS 100, FIG. 1, includes a processor 102, which is connected to a bus 104. Bus 104 serves as a connection between processor 102 and other components of computer system 100. An input device 106 is coupled to processor 102 to provide input to processor 102. Examples of input devices include keyboards, touchscreens, and pointing devices such as mouses, trackballs and trackpads. Programs and data are stored on a mass storage device 108, which is coupled to processor 102. Mass storage devices include such devices as hard disks, optical disks, magneto-optical drives, floppy drives and the like. IHS 100 further includes a display 110, which is coupled to processor 102 by a video controller 112. A system memory 114 is coupled to processor 102 to provide the processor with fast storage to facilitate execution of computer programs by processor 102. In an embodiment, a chassis 116 houses some or all of the components of IHS 100. It should be understood that other buses and intermediate circuits can be deployed between the components described above and processor 102 to facilitate interconnection between the components and the processor 102.
Referring now to FIGS. 2a and 2b, a cable 200 is illustrated. In an embodiment, the cable 200 may be a flat flexible cable known in the art, as illustrated, or a variety of other types of cables that are capable of coupling subsystems together. The cable 200 includes a flat flexible cable 202 having a top surface 202a, a bottom surface 202b located opposite the top surface 202a, a pair of opposing side edges 202c and 202d extending between the top surface 202a and the bottom surface 202b, and a distal end 202e extending between the top surface 202a, the bottom surface 202b, and the side edges 202c and 202d. A substrate 204 is coupled to the distal end 202e of the FFC 202. The substrate 204 includes a top surface 204a, a bottom surface 204b located opposite the top surface 204a, a pair of opposing side edges 204c and 204d extending between the top surface 204a and the bottom surface 204b, and a front edge 204e extending between the top surface 202a, the bottom surface 202b, and the side edges 204c and 204d. 
In an embodiment, a plurality of FFC contact members 206 are located on the top surface 204a of substrate 204 in a substantially parallel and spaced apart orientation from each other and between the pair of opposing side edges 204c and 204d, as illustrated. In an embodiment, the plurality of FFC contact members 206 are coupled to wires that are located in the FFC 202. The plurality of FFC contact members 206 may be located in different positions other than what is illustrated such as, for example, on the bottom surface 204b of the substrate 204 in a substantially parallel and spaced apart orientation from each other between the pair of opposing side edges 204c and 204d, or on the front edge 204e of the substrate 204 in a substantially parallel and spaced apart orientation from each other between the pair of opposing side edges 204c and 204d. 
A first cable coupling member 208 extends from the side edge 204c of the substrate 204 adjacent the front edge 204e and defines a first aperture 208a extending through the first cable coupling member 208. While the first aperture 208a is illustrated as hole that extends all of the way through the first cable coupling member 208, in an embodiment the first cable coupling member 208 may define a channel that does not extend all of the way through the first cable coupling member 208. A second cable coupling member 210 extends from the side edge 204d of the substrate 204 adjacent the front edge 204e of the substrate 204, is located on an opposite side of the plurality of FFC contact members 206 from the first cable coupling member 208, and defines a second aperture 210a extending through the second cable coupling member 210. While the second aperture 210a is illustrated as a hole that extends all of the way through the second cable coupling member 210, in an embodiment the second cable coupling member 210 may define a channel that does not extend all of the way through the second cable coupling member 210. Although two cable coupling members are illustrated, in an embodiment there may be only the first cable coupling member 208. In an embodiment, the first cable coupling member 208 may be located in different positions other than what is illustrated such as, for example, between two of the FFC contact members 206.
Referring now to FIGS. 3a and 3b, an LIF connector 300 is illustrated. The LIF connector 300 includes an LIF connector body 302 having a top surface 302a, a bottom surface 302b located opposite the top surface 302a, a front edge 302c extending from the top surface 302a and bottom surface 302b, a rear edge 302d located opposite the front edge 302c and extending between the top surface 302a and bottom surface 302b, and a pair of opposing side edges 302e and 302f extending between the top surface 302a, the bottom surface 302b, the front edge 302c, and the rear edge 302d. A cable channel 306 is defined by the LIF connector body 302 and extends into the LIF connector body 302 from a channel entrance 306a located on the front edge 302c. The cable channel 306 is defined by a channel top surface 306b, a channel bottom surface 306c located opposite the channel top surface 306b, and a channel rear surface 306d extending between the channel top surface 306b and the channel bottom surface 306c. 
A plurality of LIF connector contact members 308 are shown located on the LIF connector body 302 adjacent the cable channel 306. The LIF connector contact members 308 run through the LIF connector body 302 and extend into the cable channel 306 adjacent the channel top surface 306b, as illustrated. In an embodiment, the plurality of LIF connector contact members 308 may be located in different positions other than what is illustrated, such as, for example, adjacent the channel bottom surface 306c or adjacent the channel rear surface 306d. While the LIF connector contact members 308 are shown extending into the cable channel 306, in an embodiment, the LIF connector contact members 308 may be flush with the top surface 306b of the cable channel 306 without actually extending into the cable channel 306.
A first cable securing member 310 extends from the LIF connector body 302 and is located adjacent the cable channel 306. A first coupling portion 312 is located on a distal end of the first cable securing member 310. The first coupling portion 312 includes a first securing surface 312a and a first beveled edge 312b located adjacent the first securing surface 312a. A second cable securing member 314 extends from the LIF connector body 302 and is located adjacent the cable channel 306 on an opposite side of the plurality of LIF connector contact members 308 from the first cable securing member 310. The second cable securing member 314 is a flexible beam extending from the LIF connector body 302. A second coupling portion 316 is located on a distal end of the second cable securing member 314. The second coupling portion 316 includes a second securing surface 316a and a second beveled edge 316b located adjacent the second securing surface 316a. In an embodiment, the first cable securing member 310 may be the only cable securing member located on the LIF connector body 302. In an embodiment, the first cable securing member 310 may be located in different positions other than what is illustrated, such as, for example, between two LIF connector contact members 308.
Referring now to FIGS. 2a, 2b, 3a, 3b, 4a, 4b, 4c, 4d and 4e, a method 400 for securing an LIF connector is illustrated. The method 400 begins at step 402 where the LIF connector 300, illustrated in FIGS. 3a and 3b, is provided. In an embodiment, the LIF connector 300 may be coupled to an IHS 100, described above with reference to FIG. 1, on a board located in the chassis 116, described above with reference to FIG. 1, such that the LIF connector 300 is electrically coupled to the processor 102, described above with reference to FIG. 1.
The method 400 then proceeds to step 404 where the cable 200, illustrated in FIGS. 2a and 2b, is coupled to the LIF connector 300. The cable 200 is positioned adjacent the LIF connector 300 such that the front edge of the substrate 204e is located adjacent the cable channel 306, as illustrated in FIGS. 4b and 4c. The cable 200 is then moved in a direction A such that the substrate 204 enters the cable channel 306. As the substrate 204 enters the cable channel 306 the plurality of LIF connector contact members 308 engage the plurality of FFC contact members 206.
The method 400 then proceeds to step 406 where the cable 200 is secured to the LIF connector 300. As the substrate 204 continues to move in direction A, the substrate 204 engages the first beveled edge 312b of the first cable securing member 310. Engagement of the substrate 204 with the first beveled edge 312b on the first cable securing member 310 deflects the first cable securing member 310 in a direction B such that the substrate 204 may continue to move in a direction A until the first cable securing member 310 is allowed to resiliently deflect in a direction C into the first aperture 208a such that the first securing surface 312a engages the first aperture 208a, as illustrated in FIGS. 4d and 4e. When the first securing surface 312a engages the first aperture 208a, the plurality of FFC contact members 206 may not be disengaged from the plurality of LIF connector contact members 308 without the first coupling portion 312 on the first cable securing member 310 being removed from the first aperture 208a such that the first securing surface 312a disengages the first cable coupling member 208. In an embodiment, the second cable coupling member 210 may couple to the second cable securing member 314 in substantially the same manner as described above for the first cable coupling member 208 and the first cable securing member 310. Thus, a method and apparatus are provided that allow a cable to be coupled to an LIF connector such that a plurality of contact members on the cable may not be disengaged from a plurality of LIF connector contact members without disengagement of a cable securing member and a cable coupling member. The method and apparatus are applicable for use in an IHS.
Referring now to FIG. 5a, in an alternative embodiment, a LIF connector 500 is substantially similar in design and operation to the LIF connector 300, described above with reference to FIGS. 3a, 3b, 4a, 4b, 4c, 4d and 4e, with the provision of a first cable securing member disengagement device 506 extending substantially perpendicularly from the first cable securing member 310. The first cable securing member disengagement device 506 includes a handle 506a located on its distal end.
Referring now to FIGS. 5b and 5c, a method 500 for coupling a cable to an LIF connector is substantially similar in operation to the method 400, described above with reference to FIGS. 4a, 4b, 4c, 4d and 4e, with the provision of steps 502 and 504 following step 406. After the cable 200 has been secured, the method 500 proceeds to step 502 where the first cable securing member disengagement device 506 is activated. A force is applied to the handle 506a of the first cable securing member disengagement device 506 in a direction D to deflect the first cable securing member 310 such that the first coupling portion 312 is removed from the first aperture 208a and the cable 200 may be moved in a direction E, as illustrated in FIG. 5c. The method 500 then proceeds to step 504 where the cable 200 is decoupled from the LIF connector 300 by moving the cable 200 in the direction E such that the substrate 204 exits the cable channel 306. In an embodiment, the first cable securing member 310 and the first cable securing member disengagement device 506 may be two separate members operable to engage each other to deflect the first cable securing member in order to disengage the first cable securing member 310 from the cable 200. In an embodiment, a second cable securing member disengagement device may be provided to deflect the second cable securing member 314, illustrated in FIGS. 3a, 4b and 4d. Thus, a method and apparatus are provided for coupling a cable to an LIF connector such that a plurality of contact members on the cable may not be disengaged from a plurality of LIF connector contact members without disengagement of a cable securing member and a cable coupling member. The method and apparatus are applicable for use in an IHS.
Although illustrative embodiments have been shown and described, a wide range of modification, change and substitution is contemplated in the foregoing disclosure and in some instances, some features of the embodiments may be employed without a corresponding use of other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the embodiments disclosed herein.

## Claims

1. A low insertion force connector coupling apparatus, comprising:
a low insertion force connector body;
a cable channel defined by the low insertion force connector body;
a plurality of low insertion force connector contact members located on the low insertion force connector body adjacent the cable channel; and
a first cable securing member located adjacent the cable channel and operable to engage and automatically secure a cable coupling member on a cable such that a plurality of flat flexible cable contact members on the cable may not be disengaged from the plurality of low insertion force connector contact members without actuation of a first cable securing member disengagement device operable only to disengage the first cable securing member and a cable coupling member.

2. The apparatus of claim 1, further comprising:
a second cable securing member located adjacent the cable channel, wherein the first cable securing member is located on an opposite side of the plurality of low insertion force connector contact members from the second cable securing member.

3. The apparatus of claim 2, further comprising:
a second cable securing member disengagement device operable to disengage of the second cable securing member and a cable coupling member.

4. An information handling system, comprising:
an information handling system chassis;
a board coupled to the information handling system chassis;
a processor mounted to the board; and
a low insertion force connector coupled to the board and electrically coupled to the processor, the low insertion force connector comprising:
a low insertion force connector body;
a cable channel defined by the low insertion force connector body;
a plurality of low insertion force connector contact members located on the low insertion force connector body adjacent the cable channel; and
a first cable securing member located adjacent the cable channel and operable to engage and automatically secure a cable coupling member on a cable such that a plurality of flat flexible cable contact members on the cable may not be disengaged from the plurality of low insertion force connector contact members without actuation of a first cable securing member disengagement device operable only to disengage the first cable securing member and a cable coupling member.

5. The system of claim 4, further comprising:
a second cable securing member located adjacent the cable channel, wherein the first cable securing member is located on an opposite side of the plurality of low insertion force connector contact members from the second securing member.

6. The system of claim 5, further comprising:
a second cable securing member disengagement device operable to disengage of the second cable securing member and a cable coupling member.

7. A method for securing a cable to a low insertion force connector, comprising:
providing a low insertion force connector comprising a cable channel, a plurality of low insertion force connector contact members adjacent the cable channel, and a cable securing member adjacent the cable channel;
coupling a cable to the low insertion force connector by positioning the cable in the cable channel;
automatically securing the cable in the low insertion force connector by engaging the cable securing member with a cable coupling member located on the cable, whereby the cable may not be decoupled from the low insertion force connector without activating a disengagement device operable only to disengage the cable securing member and the cable coupling member; and
decoupling the cable from the low insertion force connector.