FIELD OF THE INVENTION
The present disclosure relates to electrical connectors, and more specifically, to improved systems for selectively sealing wire openings of an electrical connector, such as a charging receptacle or inlet of an electric vehicle (EV).
BACKGROUND
It is often desired to seal electrical connectors that are subject to harsh environments, thereby ensuring that dirt, moisture and other contaminants do not enter the contact area of the connector. For example, EVs are increasing in popularity as their practicality and usability improves. In order to fulfill consumer requirements for both personal and commercial applications, associated systems and components of these vehicles must be continuously optimized to extract maximum performance, usability and reliability. One critical aspect of EV usability includes the ability to consistently charge its batteries as quickly as possible over the life of the vehicle. In this way, it is desired to minimize any degradations in charging performance. Charging performance can be affected by any number of factors, including moisture, dirt and other debris contaminating and/or degrading the electrical terminals or contacts of the charger plug or the socket/receptacle of the EV. Thus, it is desired to shield these sensitive surfaces and/or components from the outside environment.
SUMMARY
In one embodiment of the present disclosure, a cap for an electrical connector comprises a first cap body defining a first portion of a first circular opening, and a second cap body defining a second portion of the first circular opening. The second cap body is hingedly connected to the first cap body and is movable between an open position and a closed position. In the closed position, the first and second portions of the first cap body and the second cap body define a circular opening sized to receive a conductive cable therethrough.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described by way of example with reference to the accompanying Figures, of which:
FIG. 1 is a perspective view of an electrical connector and a hinged seal cap in an open position according to an embodiment of the present disclosure;
FIG. 2 is a perspective view of the connector and the hinged seal cap in a closed position capturing a plurality of cables therethrough;
FIG. 3 is a perspective view of the connector with the hinged seal cap in an installed position thereon;
FIG. 4 is a side cross-sectional view of the connector with the hinged seal cap in the installed position;
FIG. 5 is a top perspective view of the hinged seal cap in the open position;
FIG. 6 is a bottom perspective view of the hinged seal cap in the open position;
FIG. 7 is a top perspective view of the hinged seal cap in the closed position;
FIG. 8 is a bottom perspective view of the hinged seal cap in the closed position;
FIG. 9 is a top view of the hinged seal cap in the closed position;
FIG. 10 is a side view of the hinged seal cap in the closed position; and
FIG. 11 is a bottom view of the hinged seal cap in the closed position.
DETAILED DESCRIPTION OF THE EMBODIMENTS
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
Embodiments of the present disclosure provide a single seal cap which may be used to cover a plurality of cable or wire openings of an electrical connector simultaneously. Further, the seal cap is able to be fitted to the cables and the connector after the cables have been installed within a connector or otherwise connectorized. Specifically, in one embodiment of the present disclosure, a seal cap for an electrical connector comprises a first cap body defining a first portion of a plurality of circular openings, and a second cap body defining a second portion of the plurality of circular openings. The second cap body is hingedly connected to the first cap body and movable between an open position and a closed position. In the closed position, first and second portions of the first cap body and the second cap body define the plurality of circular openings, each sized to receive a conductive cable therethrough.
Referring to FIGS. 1-4, embodiments of the present disclosure are shown and described in use with an exemplary electrical connector 10 (e.g., a charging receptacle or inlet for an electric vehicle). The exemplary electrical connector 10 includes a housing 12 defining a front opening 14 for receiving a portion of a mating connector or a mating terminal (e.g., a charging plug, not shown) in a mating direction. The housing 12 further includes a plurality of rear openings 16 (e.g., five) each receiving a conductive cable or wire 17 and/or an electrical terminal 18 for mating with the corresponding mating connector or terminal, as shown in FIG. 4. Still referring to FIG. 4, the terminal 18 may be crimped onto an end of the cable 17 prior to its insertion into the housing 12. The terminal 18 is installed into the rear opening 16 of the housing 12 in an insertion or installation direction, generally opposite to the mating direction. In this way, the terminal 18 may be described as being “rear-loaded” within the connector housing 12. The housing 12 further defines a terminal latch 28 for engaging with an annual groove of the terminal 18 in an installed position. The terminal latch 28 forms a mechanical stop for fixing the insertion distance of the terminal 18 within the housing 12, as well as preventing its removal. An annular cable seal 20 is provided within each rear opening 16 for forming a seal between the cable 17 and an inner face of a protruding wall 22 of the housing 12 defining the rear opening.
A seal cap 30 according to embodiments of the present disclosure is adapted to be selectively secured onto at least one, and in the exemplary embodiment five, cable(s) 17 simultaneously. The cap 30 comprises a split body configuration, including first and second cap bodies or portions 31,32 which are hingedly connected and movable between an open position as shown in FIG. 1, and a closed position as shown in FIGS. 2-4. Each cap body 31,32 defines a portion of a plurality of cable openings. In this way, the cap 30 may be fitted over the cables 17 after their insertion into the exemplary connector 10, or after the application of other connectorization (e.g., terminals 18). Once fitted over the cables 17, the cap 30 is secured to the rear of the housing 12 of the connector 10 via corresponding locking features 21,42, such as complementary snap-fit latches 42 and catches 21. As shown in FIG. 4, a plurality of cylindrical seal retainers 40 defined by the cap 30 are received within the rear openings 16 for holding and/or retaining each of the cable seals 20 within their respective opening. Once installed, the cap 30 provides protection against, for example, dirt, debris and fluid (including high-pressure spray) from entering the connector 10. The cap 30 also provides strain relief for the cables 17.
Referring now to FIGS. 5-11, the first body or body half 31 and the second body half 32 are hingedly or pivotally connected to one another by a connection 34. In one embodiment, the connection 34 comprises a rotating assembly including an axle, such as a pin, and corresponding female portion rotatably receiving the axle. In the exemplary illustrated embodiment, the connection 34 comprises a hinge, and more specifically, a living hinge formed integrally with the first and second bodies 31,32. As shown in FIG. 7, in the closed position, the connection or living hinge 34 is elastically deformed into an arcuate shape.
Each first and second body 31,32 further includes a first locking mechanism, such as a latch 36 formed on the first body and a catch 38 formed on the second body. The locking features 36,38 cooperate to selectively fix the first and second bodies 31,32 in the closed position, as shown in FIGS. 7-11. A second locking mechanism, such as an “L-shaped” cantilevered latch 37 and a catch 39, are arranged on sides of the first and second bodies 31,32 proximate the connection 34. The latch 37 and catch 39 engage in the closed position of the cap 30 for ensuring the first and second bodies 31,32 are tightly secured proximate the hinged connection 34. Further, in the event of a failure of the connection 34 (e.g., a fatigue failure of the hinge), the second locking features or mechanism ensure the functionality of the cap 30. As shown most clearly in FIG. 7, in the exemplary embodiment, the hinged connection 34 is split into upper and lower halves or portions in order to accommodate the secondary locking features therebetween.
With particular reference to FIG. 5, the first body defines 31 a plurality of cable receiving slots 43. Each cable receiving slot 43 has an end defining a portion of a circle, or a semi-circular lower end 45. Likewise, the first body 31 defines a plurality of cable retaining protrusions 47. Each cable retaining protrusion 47 defines a portion of a circle, or a semi-circular end 49. In the exemplary embodiment, each cable slot 43 is arranged between adjacent retaining protrusions 47. Likewise, the second body 32 defines a plurality of cable receiving slots 53. Each cable receiving slot 53 includes an end defining a portion of a circle, or a semi-circular lower end 55. The second body 32 further defines a plurality of cable retaining protrusions 57. Each cable retaining protrusion 57 defines a portion of a circle, or a semi-circular end 59. Each cable retaining protrusion 57 is arranged between adjacent cable slots 53. As shown, the number of cable slots 43 of the first body corresponds to the number of cable retaining protrusions 57 of the second body. Likewise, the number of cable retaining protrusions 47 of the first body 31 corresponds to the number of cable slots 53 of the second body 32. The cable receiving slots 43,53 are formed into respective first and second cap bodies 31,32 in cable receiving directions. Similarly, each cable retaining protrusion 47,57 extends from the cap bodies 31,32 in directions opposite to the cable receiving directions.
Still referring to FIG. 5, the cable retaining protrusions 47,57 may be embodied as single-walled, or generally planar, tabs. The cable receiving slots 53 define lateral channels 61 on either side of the slots for receiving the lateral ends of each cable receiving protrusion 47. In the exemplary embodiment, the cable retaining protrusions 57 of the second body 32 define a lower wall of each of the channels 61. Accordingly, in the closed position, the bodies 31,32 are supported against relative axial movement via the engagement of the protrusions 47 within the slots 61.
As shown most clearly in FIG. 8, in the closed position the first cap body 31 and the second cap body 32 form a continuous peripheral wall 33 defining an internal cavity. The seal retainers 40 are formed within the cavity, and extend in an axial direction from an underside of each of the cable slots 43,53. See also FIG. 6. The seal retainers 40 define at least partially cylindrical, hollow protrusions extending from an underside of one of the first cap body 31 or the second cap body 32. In the exemplary embodiment, each seal retainer 40 extends at least 270 degrees in a radial direction, and defines a slotted opening in the radial direction sized to accept the cable 17 therethrough.
As shown in FIGS. 7-11, in the closed position, the first and second bodies 31,32 are joined along a part line P. The cable receiving slots 43 of the first body 31 and the cable receiving protrusions 57 of the second body 32 cooperate to define a first plurality of closed circular openings 70 (e.g., two openings), and the cable receiving protrusions 47 of the first body and the cable receiving slots 53 of the second body cooperate to define a second plurality of closed circular openings 72 (e.g., three openings). Each seal retainer 40 is coaxially aligned with a respective one of the openings 70,72. The openings 70,72 are arranged in respective first and second rows across a width of the cap 30, as shown in FIGS. 9 and 11.
Windows or openings 60 may be defined in either or both of the first and second bodies 31,32, and specifically the peripheral wall 33 thereof, to provide visual and/or physical access to captured cables 17. Complementary stiffening ribs 63 may be defined on the outer surfaces of each of the first and second bodies 31,32 for strengthening the cap 30. In the exemplary embodiment, the stiffening ribs 63 of the first and second bodies 31,32 may overlap in a width direction with the cap 30 in the closed position, as shown in FIGS. 7 and 9.
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
As used herein, an element recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present disclosure are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.
Patent Application
20220247117
