The subject matter herein relates generally to floatable electrical connectors.
Some known electrical connectors are pass-through connectors that may be used to provide an electrical conductive path through a panel. For example, the panel may be a cover for an electrical device, and the connector extends through a defined opening in the panel to electrically connect electrical components of the device internal to the cover to an external mating connector. The pass-through connector passes through the opening in the panel such that a first portion of the connector is on a first side of the panel and a second portion of the connector is on an opposite second side of the panel. The first portion of the connector may be configured to interface with the mating connector. The second portion of the connector on the other side of the panel may be electrically connected to electrical components of the electrical device. A peripheral seal may be located at the interface between the panel and the connector in order to seal the connector to the panel at the opening. The seal may prevent air, liquid, and/or debris from leaking through the opening of the panel around the connector. In an example application in the automotive industry, the pass-through connector may be installed through a transmission cover to provide electrical power, control, and/or data signals to and/or from the transmission.
Some known electrical connectors are header connectors that are configured to be mounted to a case or housing, such as a housing of an electrical and/or mechanical device. Some known header connectors are pass-through connectors that are mounted to a housing of an electrical device and also extend at least partially through a panel that is placed over the connector. Optionally, the panel may be mounted to the housing of the electrical device separately from the connector, and the connector may not be directly coupled to the panel.
As a result, the opening of the panel may not align correctly with the portion of the connector configured to extend through the panel. For example, the gap between the panel and the connector may be non-uniform, having a larger gap on one side than another. Although a compression seal may be installed at the interface of the connector and the panel, the seal would be compressed more at the side with the smaller gap than at the side with the larger gap. Due to the different gap sizes and resulting different compressive forces on the seal, the seal may fail, allowing a leak at either of the sides having non-uniform gaps. Referring back to the example application of the connector installed on a transmission housing, if the transmission cover is not properly aligned with the connector, a leak path may form that allows the unintentional transfer of pressure, gases, liquids, and contaminants into and out of the transmission cover, which could harm the performance of the transmission. A need remains for an electrical connector that is capable of floating within a predefined area to properly align with a mating connector, an opening in a panel, and/or the like.
In an embodiment, a floatable connector includes a housing and a bushing. The housing has at least one mounting ear. The mounting ear has an aperture therethrough and at least one deflectable finger that extends at least partially into the aperture from an inner surface defining the aperture. The bushing is loaded into the aperture. The bushing includes a stem extending along a bushing axis between a first flange and a second flange. The bushing defines a channel therethrough along the bushing axis. The diameter of the aperture of the mounting ear is greater than the diameter of an outer surface of the stem such that an axially extending gap is formed between the inner surface of the mounting ear and the outer surface of the stem. The housing is floatable radially within the gap relative to the bushing.
In an embodiment, a floatable connector includes a housing, a compression seal, and a bushing. The housing has a mating end and a mounting end. The mating end extends through a window of a panel. The housing has at least one mounting ear proximate to the mounting end. The mounting ear includes an aperture therethrough and at least one deflectable finger extending at least partially into the aperture from an inner surface defining the aperture. The compression seal is disposed around a perimeter of the housing. The compression seal is received between the housing and the window to seal the housing to the panel. The bushing is loaded into the aperture. The bushing includes a stem extending along a bushing axis between a first flange and a second flange. The bushing defines a channel therethrough along the bushing axis. The bushing is configured to receive a fastener through the channel. The fastener is fixed relative to the panel. The diameter of the aperture of the mounting ear is greater than the diameter of an outer surface of the stem such that an axially extending gap is formed between the inner surface of the mounting ear and the outer surface of the stem. The housing is floatable radially within the gap relative to the fastener and the panel to align with the window.
One or more embodiments of the subject matter described herein provide a floatable connector with features that allow the connector to float in order to properly align with a mating connector, a window of a panel, or the like.
In one or more embodiments, the connector 102 may be a pass-through connector that extends through a window 109 in a panel 110. The panel 110 optionally may be part of a cover 112 that surrounds at least a part of the header 106 of the device 108. The cover 112 may protect the device 108 from debris, liquids, and other contaminants external to the cover 112. The cover 112 also may be used as a barrier to maintain internal conditions (e.g., temperature, pressure, gases) within the cover 112 that may differ from ambient external conditions. The cover 112 may be separately mounted or coupled to the header 106 from the connector 102, with the connector 102 aligned with and/or extending through the window 109.
Although the electrical connector 102 in the illustrated embodiment may be a pass-through header connector, it is understood that
As shown in
It should be noted that
The mating end 204 of the housing 202 extends through a window 109 of a panel 110. The window 109 may be configured to have an area slightly larger than a cross-sectional area of the mating end 204 of the housing 202 to allow the mating end 204 to extend through the window 109. In an exemplary embodiment, the connector 102 includes a compression seal 304 (shown in
The mounting end 206 of the housing 202 is configured to abut a mount surface (not shown) of a device or structure on which the connector 102 is mounted, such as the header 106 (shown in
The compression seal 304 may be formed of a compressive material, such as rubber, a rubber-like polymer, or the like, such that the seal 304 is able to be compressed between the housing 202 and the panel 110 (shown in
In an embodiment, each mounting ear 216 has an aperture 306 that extends through the ear 216. The aperture 306 is defined by an inner surface 308 of the ear 216. The mounting ear 216 includes at least one deflectable finger 310 that extends at least partially into the aperture 306 from the inner surface 308. For example, the deflectable finger(s) 310 may extend into the aperture 306 such that the deflectable finger(s) 310 decrease the diameter of the aperture 306 relative to the diameter of the aperture 306 as defined by the inner surface 308. Each deflectable finger 310 is biased to extend into the aperture 306. As such, the finger(s) 310 may be deflected radially outward by a contacting force, but once the contacting force is removed, the finger(s) 310 deflect back to extend into the aperture 306. In an exemplary embodiment, the ear 216 includes a plurality of deflectable fingers 310 that are evenly dispersed around a perimeter of the inner surface 308. Optionally, spaces may be defined between adjacent fingers 310. Each finger 310 may be independently deflectable. In an alternative embodiment, the mounting ear 216 may have only a single deflectable finger 310 that extends around the perimeter of the inner surface 308.
The electrical connector 102 includes at least one bushing 312 that is configured to be loaded into the aperture 306 of the mounting ear 216. In an exemplary embodiment, the bushing 312 includes a stem 314 that extends along a bushing axis 316 between a first flange 318 and a second flange 320. For example, the stem 314 bridges the distance between and connects the flanges 318, 320. The bushing 312 also defines a channel 322 through the length of the bushing 312 along the bushing axis 316. The bushing 312 may be formed of a metal or plastic material. In an exemplary embodiment, the bushing 312 may act as a compression limiter that absorbs compressive forces generated by tightening the fastener 214, thereby reducing the compressive forces applied to the mounting ear 216.
During assembly of the electrical connector 102, the bushing 312 may be loaded into the aperture 306 of the mounting ear 216. For example, the bushing 312 may be loaded from the mounting end 206 towards the mating end 204 of the housing 202 in the loading direction 324. In an exemplary embodiment, as the bushing 312 is loaded, the first flange 318 contacts the deflectable finger(s) 310 and deflects the finger(s) 310 radially outward. When the first flange 318 moves beyond (e.g., past) the finger(s) 310 in the loading direction 324, the contacting force is removed and the finger(s) 310 deflect radially inward behind the first flange 318. In the illustrated embodiment, the electrical connector 102 has two mounting ears 216A, 216B and two corresponding bushings 312A, 312B. Bushing 312A is shown poised for loading into the aperture 306 of the respective mounting ear 216A, while bushing 312B is shown fully loaded within the respective mounting ear 216B.
The channel 322 of the bushing 312 is configured to receive the fastener 214 therethrough. For example, during assembly the fastener 214 may be installed through the channel 322 in an installation direction 326 that extends from the mating end 204 side of the mounting ear 216 towards the mounting end 206. In an exemplary embodiment, the bushing 312 is loaded into the aperture 306 of the mounting ear 216 prior to the fastener 214 being installed through the channel 322 of the bushing 312. The fastener 214 may be a bolt. In an embodiment, the fastener 214 is a threaded bolt or a screw. Alternatively, the fastener 214 may be another type of fastener, such as a pin bolt, a rivet, a latch, and/or the like. In an exemplary embodiment, the housing 202 includes a plurality of mounting ears 216, and each mounting ear 216 is configured to receive a corresponding bushing 312 and fastener 214.
Once the bushing 312 is fully loaded within the mounting ear 216, the bushing 312 is retained within the aperture 306 by the flanges 318, 320. For example, the bushing 312 is retained within the mounting ear 216 at a first (e.g., bottom) end 414 of the of the mounting ear 216 by an inner surface 416 of the second flange 320 which engages the bottom end 414 of the mounting ear 216. In an embodiment, the diameter of the first flange 318 of the bushing 312 is smaller than the diameter of the aperture 306, while the diameter of the second flange 320 is larger than the diameter of the aperture 306. Thus, as the bushing 312 is loaded in the loading direction 324 (shown in
The fastener 214 extends through the channel 322 of the bushing 312. The fastener 214 is configured to be coupled to a mount surface of a device or structure, such as the header 106 (shown in
Optionally, a sleeve 432 may be disposed around a shaft 434 of the fastener 214. The sleeve 432 may be formed of a compressive material, such as rubber or a rubber-like polymer (e.g., plastic) or polymer blend, and are retained on the fastener 214 by a friction/interference fit. The sleeve 432 is configured to engage an inner surface 436 of the bushing 312 that defines the channel 322. In an embodiment, the sleeve 432 compresses to fill any clearances between the inner surface 436 of the bushing 312 and the shaft 434 of the fastener 214. As a result, the bushing 312 may be generally fixed to the fastener 214 by an interference fit such that the bushing 312 is allowed only negligible radial and/or rotational movement relative to the fastener 214. Optionally, the bushing 312 may be generally fixed to the fastener 214 without the use of the sleeve 432, such as by an interference fit due to tight clearance between the fastener 214 and the inner surface 436 of the bushing 312. The fastener 214, as mentioned, is configured to be coupled to and fixed relative to the device or structure, such as the header 106 (shown in
In an exemplary embodiment, the diameter of the aperture 306 of the mounting ear 216 is greater than the diameter of an outer surface 418 of the stem 314. As a result, an axially extending gap 420 is formed or defined between the inner surface 308 of the mounting ear 216 and the outer surface 418 of the stem 314. The gap 420 has a length that extends in the axial direction generally parallel to the bushing axis 316. The gap 420 has a width that extends in the radial direction orthogonal to the bushing axis 316. For example, the width W1 of the gap 420 may be the radial distance between the outer surface 418 of the stem 314 and the inner surface 308 of the mounting ear 216 when the bushing 312 and the mounting ear 216 share a common axis (e.g., are concentric). In
The mounting ear 216 of the housing 202 (shown in
In an exemplary embodiment, the stem 314 of the bushing 312 defines a groove 438 that extends along a perimeter of the outer surface 418. The groove 438 may be aligned with the one or more deflectable fingers 310 of the mounting ear 216. For example, the groove 438 may be along a portion of the stem 314 that is proximate to at least the distal end 408 of the deflectable fingers 310. Since the deflectable fingers 310 extend at least partially inward towards the center or axis of the aperture 306, the groove 438 reduces the diameter of the stem 314 that is proximate to the fingers 310 to retain the gap 420 between the mounting ear 216 and the stem 314 of the bushing 312. As shown in
Referring now to
The panel 110 may be mounted relative to the header 106 or another mounting surface, such that the window 109 of the panel 110 may be fixed in one place. The fastener 214 of the connector 102 is also fixed in one place within the header 106. However, the connector 102 is not fixed directly to the panel 110. In some known connector systems, if one or more measurements or positions of the header, the panel, or the connector are off by even a slight margin, the connector may not align correctly with a window of the panel. Even if the connector fits within the window, the misalignment causes uneven sealing between the edges of the window and the connector. The uneven sealing can result in undesirable leaks that allow the transfer of temperature, pressure, contaminants, gases, liquids, debris, and/or the like through the window between the connector and the panel.
In an exemplary embodiment, the housing 202 of the connector 102 is able to float relative to the panel 110 to align the housing 202 with the window 109. For example, although both the fastener 214 and the panel 110 may be fixed in place, the mounting ear 216 is able to float radially within the gap 420 relative to both the fastener 214 and the panel 110. As the mating end 204 of the housing 202 is loaded through the window 109, the compression seal 304 (shown in
It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above-described embodiments (and/or aspects thereof) may be used in combination with each other. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Dimensions, types of materials, orientations of the various components, and the number and positions of the various components described herein are intended to define parameters of certain embodiments, and are by no means limiting and are merely exemplary embodiments. Many other embodiments and modifications within the spirit and scope of the claims will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.” Moreover, in the following claims, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements on their objects. Further, the limitations of the following claims are not written in means-plus-function format and are not intended to be interpreted based on 35 U.S.C. §112(f), unless and until such claim limitations expressly use the phrase “means for” followed by a statement of function void of further structure.
Number | Name | Date | Kind |
---|---|---|---|
4915641 | Miskin | Apr 1990 | A |
5391091 | Nations | Feb 1995 | A |
5397244 | Generoli | Mar 1995 | A |
6234817 | Hwang | May 2001 | B1 |
6527572 | Jou | Mar 2003 | B2 |
6648676 | Lee | Nov 2003 | B1 |
6679712 | Chang | Jan 2004 | B2 |
6679726 | Tunn | Jan 2004 | B1 |
6736659 | Wu | May 2004 | B1 |
6758690 | Yu | Jul 2004 | B1 |
6773286 | Wu | Aug 2004 | B1 |
6824419 | Wu | Nov 2004 | B1 |
6890200 | Wu | May 2005 | B1 |
6896556 | Wu | May 2005 | B1 |
7059882 | Sugita | Jun 2006 | B2 |
7074084 | Shuey | Jul 2006 | B2 |
7090521 | Nishio | Aug 2006 | B2 |
7201594 | van der Mee | Apr 2007 | B2 |
7559796 | Wu | Jul 2009 | B1 |
7607930 | Wu | Oct 2009 | B1 |
7950942 | Klinger | May 2011 | B2 |
8231399 | Daubigney | Jul 2012 | B2 |
8337242 | Sun | Dec 2012 | B2 |
8535091 | Fu | Sep 2013 | B2 |
8696380 | Su | Apr 2014 | B2 |
8734172 | Takei | May 2014 | B2 |
8894431 | Tiberghien | Nov 2014 | B2 |
8936484 | Metzler | Jan 2015 | B2 |
8951055 | Eusterholz | Feb 2015 | B2 |
9116170 | Guo | Aug 2015 | B2 |
9190768 | Ikeya | Nov 2015 | B2 |
9231352 | Sasaki | Jan 2016 | B2 |
20010051452 | Walker | Dec 2001 | A1 |
20060057862 | Oberstarr | Mar 2006 | A1 |
20060141836 | Van Der Mee | Jun 2006 | A1 |
20080293277 | Kumar | Nov 2008 | A1 |
20090068870 | Mezhinsky | Mar 2009 | A1 |
20130088822 | Roesner | Apr 2013 | A1 |
20130252458 | Krome | Sep 2013 | A1 |
20140302711 | Suzuki | Oct 2014 | A1 |
20150229055 | Fukushima | Aug 2015 | A1 |
20150333446 | Yuan | Nov 2015 | A1 |