This disclosure relates to the field of electrical connectors, in particular, electrical connectors used in a vehicle harness and having a moisture and debris barrier.
Waterproof electrical connectors are conventionally used, for example, for electrical connections in automobiles.
Typically, the electrical connector includes a waterproof connector housing which has a sealing member mounted in a receiving cavity thereof. The sealing member is formed of a substantially circular flat, plate-shaped main body having a plurality of electrical terminal insertion holes extending between two main surfaces thereof. A plurality of ring-shaped sealing projections is provided on an inner wall surface of each electrical terminal insertion hole which seals to terminals extending therethrough. An outer circumferential surface of the main body contacts and presses against an inner circumferential surface of the receiving cavity and forms a seal therewith. This arrangement provides a moisture and debris barrier between terminals inserted through the insertion holes and the sealing member, and between the outer circumferential surface of the sealing member and the receiving cavity of the connector housing.
In some applications, an independent secondary lock is required to increase the terminal retention force to hold the terminals within the connector housing. The independent secondary lock is typically inserted into the connector housing in a lateral orientation to provide a locking structure that directly engages a cooperating feature on the terminal. Laterally inserted components within a terminal to terminal connector system create difficulty in providing a completely sealed connector assembly.
Certain individuals can appreciate an improved sealing structure for this type of connector system.
An assembly includes a connector connected to a connection sleeve and which provides a moisture and debris barrier. The connector includes a terminal housing which houses terminals, a wire seal and an interface seal sealingly mounted to the terminal housing, an independent secondary lock seated within and movable relative to the terminal housing. The connection sleeve is slidable relative to the terminal housing and engages with and moves the independent secondary lock within the terminal housing to engage the terminals in the connector, and engages with the interface seal.
The present application is illustrated by way of example and not limited in the accompanying FIGS. in which like reference numerals indicate similar elements and in which:
The detailed description that follows describes exemplary embodiments and the features disclosed are not intended to be limited to the expressly disclosed combination(s). Therefore, unless otherwise noted, features disclosed herein may be combined together to form additional combinations that were not otherwise shown for purposes of brevity. The terms “top”, “bottom”, “upper”, “lower” and the like are used for ease in description and do not denote a required orientation during use. The terms “rear” and “front” are used for description purposes only and do not denote a required orientation during use. In the description below, the term “rear” is used in denoting the direction of insertion of terminals within the system.
A waterproof electrical connector system 20 is shown and is typically used in an automobile or other vehicle. The connector system 20 includes a first connector 22 and a second connector 24 which mate together by a connection sleeve 26, see
As shown in
As shown in
An independent secondary lock window 58 is formed through the bottom wall portion 46b of the front portion 54 forward of the flange 52, and which is in communication with the terminal receiving cavities 50. Each side wall portion 46c, 46d has a longitudinally extending rib 60 at approximately the midpoint thereof which extends outward from an exterior surface of the side wall portion 46c, 46d. The ribs 60 are spaced vertically above the independent secondary lock window 58.
A pair of deflectable locking beams 62, see
An opening 66 is formed through the bottom wall portion 46b of the rear portion 56 and is in communication with the wire seal receiving recess 48.
The wire seal 34, see
The terminals 28 extend through the terminal receiving apertures 68 of the wire seal 34 and through the terminal receiving cavities 50 through the terminal housing 32. The engagement of the wire seal 34 with the terminal housing 32 and the terminals 28 with the wire seal 34 provide a moisture and debris barrier to prevent moisture and debris from passing through the rear end 42b of the terminal housing 32.
The interface seal 36, see
As shown in
Prior to assembly with the connection sleeve 26, the independent secondary lock 38 is attached to the terminal housing 32 in a pre-load position as shown in
As shown in
The front portion 54 of the terminal housing 32 has exterior surface features forward of the ribs 60 formed thereon which allows the front portion 54 to seat within and properly align within the passageway 88 of the connection sleeve 26. As an example, the connection sleeve 26 may have a plurality of elongated, longitudinally extending keys (not shown) which seat within keyways 94 in the terminal housing 32. Some of the wall portions 90a-d, for example side wall portions 90c, 90d have blocking walls 96 which extend into the passageway 88.
In use, the connection sleeve 26 is assembled with the terminal housing 32 after the wire seal 34 and the independent secondary lock 38 have been assembled together, and after the terminals 28 have been assembled with the terminal housing 32 and the wire seal 34. As discussed above, the terminals 28 are already locked to the terminal housing 32 by the primary lock in the pre-load position. In a first position, the connection sleeve 26 is forward of the independent secondary lock window 58.
In an embodiment, to assemble the connection sleeve 26 with the terminal housing 32 to a second and final position, the independent secondary lock 38 is first moved upward in the independent secondary lock window 58 using a tool or the user's finger. During this movement of the independent secondary lock 38, the arms 72, 74 flex outward to allow the finger projections 84 to travel up and over the ribs 60, and to move the main body 70 further into the independent secondary lock window 58 and into engagement with receiving recesses 98 in the terminals 28. The receiving recesses 98 and the main body 70 form mating stop surfaces. Thereafter, the connection sleeve 26 is slid longitudinally rearward such that the second end 86b passes over the front end 42a of the terminal housing 32 and then over the front portion 54. The surface features on the front portion 54 of the terminal housing 32 and in the passageway 88 of the connection sleeve 26 properly align the terminal housing 32 within the connection sleeve 26. An inner surface of the bottom wall portion 90b of the connection sleeve 26 engages with the bottom wall 70d of the main body 70 to prevent the independent secondary lock 38 from moving laterally in the independent secondary lock window 58, thereby further securing the independent secondary lock 38 into engagement with the terminals 28 and to further secure the terminals 28 to the terminal housing 32.
In another embodiment, to assemble the connection sleeve 26 with the terminal housing 32 to a second and final position, the connection sleeve 26 is slid longitudinally rearward such that the second end 86b passes over the front end 42a of the terminal housing 32 and then over the front portion 54. The surface features on the front portion 54 of the terminal housing 32 and in the passageway 88 of the connection sleeve 26 properly align the terminal housing 32 within the connection sleeve 26. As the connection sleeve 26 is slid longitudinally rearwardly, the connection sleeve 26 contacts the independent secondary lock 38. The chamfered surface 92 on the connection sleeve 26 engages with the lower end of the main body 70 of the independent secondary lock 38 and causes the independent secondary lock 38 to move upward in the independent secondary lock window 58. During this movement of the independent secondary lock 38, the arms 72, 74 flex outward to allow the finger projections 84 to travel up and over the ribs 60, and to move the main body 70 further into the independent secondary lock window 58 and into engagement with receiving recesses 98 in the terminals 28. The receiving recesses 98 and the main body 70 form mating stop surfaces. An inner surface of the bottom wall portion 90b of the connection sleeve 26 engages with the bottom wall 70d of the main body 70 to prevent the independent secondary lock 38 from moving laterally in the independent secondary lock window 58, thereby further securing the independent secondary lock 38 into engagement with the terminals 28 and to further secure the terminals 28 to the terminal housing 32.
Prior to the longitudinal movement of the connection sleeve 26, the independent secondary lock window 58 provides a leak path for moisture and debris to pass therethrough. When the connection sleeve 26 is moved longitudinally, the connection sleeve 26 passes by the independent secondary lock window 58 and an inner surface of the bottom wall portion 90b of the connection sleeve 26 engages with outer surface of the interface seal 36. The engagement of the connection sleeve 26 with the interface seal 36 provides a moisture and debris barrier to prevent moisture and debris from passing between the terminal housing 32 and the connection sleeve 26 and into the independent secondary lock window 58, thereby closing the leak path. Since the independent secondary lock 38 is forward of the interface seal 36, moisture and debris cannot pass through the independent secondary lock window 58 and into the terminal receiving cavities 50. As a result, once the independent secondary lock 38 is fully engaged with the terminals 28 and the connection sleeve 26 engages with the interface seal 36, the connector 22 is the final position as shown in
When the connection sleeve 26 is slid longitudinally rearwardly to engage the interface seal 36, the front end 42a of the terminal housing 32 will contact the blocking walls 96 in the connection sleeve 26 to prevent the connection sleeve 26 from being further slid longitudinally rearwardly.
The first connector 22 may include the connector housing 40 as shown in the drawings. As shown, the connector housing 40 is formed from a wall 100 having front and rear ends 100a, 100b and which defines a longitudinal axis therebetween. The wall 100 is formed of a top wall portion 102a, an opposite bottom wall portion 102b, a first side wall portion 102c extending between the top and bottom wall portions 102a, 102b, and a second side wall portion 102d extending between the top and bottom wall portions 102a, 102b. A longitudinally extending passageway 104 extends from the front end 100a of the wall 100 to the rear end 100b thereof. The passageway 104 has spaced apart rear terminal receiving passageways 106 which extend from the rear end 100b forwardly to a front terminal housing receiving cavity 108. The terminal receiving passageways 106 are sized to receive the terminals 28. The front terminal housing receiving cavity 108 extends from the terminal receiving passageways 106 to the front end 100a of the wall 100. The front terminal housing receiving cavity 108 has a rear section 110 which extends from the terminal receiving passageways 106, and a front section 112 which extends from the rear section 110 to the front end 100a of the wall 100. The front section 112 is larger than the rear section 110, and the rear section 110 is sized to receive the rear portion 56 of the terminal housing 32 and the terminal housing 32 extends into the front section 112. The terminal housing 32 is radially spaced from the front section 112. The terminal receiving passageways 106 align longitudinally with the terminal receiving apertures 68 through the wire seal 34 and align longitudinally with the terminal receiving cavities 50 through the terminal housing 32 so that the terminals 28 can be passed therethrough.
The rear section 110 further has a terminal housing engaging projection 114, see
When the terminal housing 32 is seated in the connector housing 40, the independent secondary lock 38 is within the front section 112. The bottom wall portion 102b has an independent secondary lock service opening 116 therethrough which is in communication with the front section 112 and aligns with the main body 70 of the independent secondary lock 38 when the terminal housing 32 and independent secondary lock 38 are seated within the connector housing 40. The independent secondary lock service opening 116 is large enough so that the independent secondary lock 38 can be moved therein. The top wall 102a has a pair of independent secondary lock service openings 118 therethrough which is in communication with the front section 112 and aligns with the finger projections 84 on the arms 72, 74 of the independent secondary lock 38 when the terminal housing 32 and independent secondary lock 38 are seated within the connector housing 40. Once the connection sleeve 26 is retracted to unblock the independent secondary lock 38 and the service openings 116, 118, and without disconnecting the terminal housing 32 from the connector housing 40, a user can insert a tool(s) through the pair of independent secondary lock service openings 118 to release the finger projections 84 and push the independent secondary lock 38 to the pre-load position such that the engagement of the independent secondary lock 38 with the terminals 28 is released.
The terminals 28 can be released from the connector 22 by a user inserting a tool through openings 119, see
The connection sleeve 26 has exterior surface features proximate to its second end 86b and the connector housing 40 has interior surface features in the front section 112 of the terminal housing receiving cavity 108 which allows the connection sleeve 26 to seat within and properly align within the terminal housing receiving cavity 108. As an example, the connection sleeve 26 may have a plurality of elongated, longitudinally extending keys 120 which seat within keyways 122 in the connector housing 40. The connection sleeve 26 has exterior surface features proximate to its second end 86b and the connector housing 40 has interior surface features in the front section 112 of the terminal housing receiving cavity 108 which allows the connection sleeve 26 to be retained within the terminal housing receiving cavity 108. As an example, the connection sleeve 26 may have a plurality of barbs 124 which seat within slots 126 in the connector housing 40. The barbs 124 snap over a wall 128 in the respective slot 126 to retain the barbs 124 within the slots 126 and to only allow a certain amount of travel distance for the connection sleeve 26 to slide longitudinally relative to the connector housing 40. In addition, the connection sleeve 26 has exterior surface features proximate to its second end 86b, such as a latching barb 130 which releasably engages with a locking latch 132 on the connector housing 40. The locking latch 132 can be depressed to release the latching barb 130.
The second connector 24 is shown in
A portion of each terminal cavity is formed in the insert 242 that locates a mating face of each female terminal 228. A retention portion that secures the terminal 228 to the terminal housing 232 includes a deflectable locking beam located in the terminal cavity that engages a window formed in the terminal 228. A transverse window is formed on a side surface of the terminal housing 232 and communicates with each terminal cavity. An independent secondary lock 238 is disposed in the window and held in a preliminary, pre-load position.
The wire seal 234 is disposed in a recess formed in a front portion of the terminal housing 232 and includes apertures corresponding to each terminal cavity. An outer periphery of the wire seal 234 engages the side walls of the recess. The interface seal 236 is disposed on an outer surface of the terminal housing 232 and surrounds the terminal housing 232 and maintains close contact around the perimeter. A flange or shoulder formed on the terminal housing 232 locates the interface seal 236 along the terminal housing 232. The connector housing 240 is secured to a front portion of the terminal housing 232.
The connection sleeve 26 is attached to the connector housing 240 and held to the connector housing 240 by a suitable latching configuration. The connection sleeve 26 is movable between a first position and a second position within the connector housing 240. In the first position, a housing insertion edge portion of the connection sleeve 26 is inserted into an opening in the connector housing 240 and surrounds the outer periphery of the terminal housing 232. The connection sleeve 26 is advanced until the insertion edge abuts a portion of the independent secondary lock 238 that extends beyond the terminal housing 232 when the independent secondary lock 238 is in its preliminary, pre-load position. The connection sleeve 26 is fixed to the connector housing 240 and cannot be removed.
With the components of the second connector 24 assembled as described above, the terminals 228 can be inserted into each respective cavity and advanced rearward until the mating end of each terminal 228 abuts the end of each cavity portion formed in the insert 242. Upon insertion, the terminals 228 pass through the wire seal 234 and permit the apertures in the wire seal 234 to intimately engage the wire insulation portions of the terminals 228 providing a moisture and debris barrier. The terminals 228 are further advanced in the cavity and are preliminarily locked in each cavity by each respective locking beam.
Upon complete insertion of the terminals 228, the independent secondary lock 238 is moved from its preliminary, pre-load position to its final position whereby a stop surface formed on the independent secondary lock 238 abuts cooperating stop surface formed on the terminal 228 and further locks the terminal 228 within the cavity. This provides a secondary lock that further restricts the terminals 228 form being withdrawn from the cavity. In its final position, the independent secondary lock 238 no longer protrudes beyond the outer body surface of the terminal housing 232 therefore allowing the connection sleeve 26 to be moved to its second and final position.
Upon movement of the connection sleeve 26 to its second position, an inner surface of the connection sleeve 26 maintains intimate contact with the interface seal 236. The contact prevents the ingress of moisture and debris into the mating interface of the second connector 24 and the connection sleeve 26.
Upon mating of the two connectors 22, 24 together, the connection sleeve 26 is similarly latched on each of the connectors 22, 24. With this construction, the connection sleeve 26 effective functions as an adapter between the first and second connectors 22, 24. Essentially, the mating interface of each connector 22, 24 is the same, in this case, male to male. The connection sleeve 26 is essentially a female to female adapter. This allows a similar sealing arrangement on both connectors 22, 24, therefore creating a completely sealed wire-to-wire arrangement with an independent secondary lock 38, 238 on each connector 22, 24.
While the first and second connectors 22, 24 are shown with only terminals 28, 228, the connectors 22, 24 could have two rows of terminals 28, 228 with latching appropriate locking beams 62 and a second independent secondary lock 38, 238 mounted opposite to the first independent secondary lock 38, 238.
As can be appreciated from the various embodiments depicted herein, different features of different embodiments depicted herein can be combined together to form additional combinations. As a result, the embodiments depicted herein are particularly suitable to provide a wide range of configurations that were not all depicted individually so as to avoid repetitiveness and unnecessary duplication.
The disclosure provided herein describes features in terms of preferred and exemplary embodiments thereof. Numerous other embodiments, modifications and variations within the scope and spirit of the appended claims will occur to persons of ordinary skill in the art from a review of this disclosure.
This application claims priority to U.S. Provisional Application No. 62/767,910, filed Nov. 15, 2018, the contents of which are incorporated herein in its entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/US2019/061343 | 11/14/2019 | WO | 00 |
Number | Date | Country | |
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62767910 | Nov 2018 | US |