Electrical connectors – With stress relieving means for conductor to terminal joint – Enlargement engaging means
Patent
1998-02-06
1999-12-28
Donovan, Lincoln
Electrical connectors
With stress relieving means for conductor to terminal joint
Enlargement engaging means
439464, H01R 1358
Patent
active
060073705
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to connectors and in particular to crimpable strain relief ferrules that are attachable to a cable and a connector so that any load applied to the cable is transmitted to the connector housing so that the load does not effect the internal components of the connector.
2. Summary of the Prior Art
It is well known in electrical connectors to provide strain relief so that a load exerted on a cable is prevented from affecting the components within the connector. This is accomplished by anchoring a jacket of the cable directly to a connector housing. One way of doing so is to form the connector housing with a flange at a cable-receiving portion thereof and then by either spreading the jacket of the cable over the flange and attaching it thereto, such as by cable ties or crimp rings or by inserting the cable into the flange and then deforming the flange about the cable in a manner that retains the cable, such as by crimping. It is also known to over-mould a strain relief boot directly upon the cable that includes a strain relief tail extending along the cable and a strain relief body portion that may be held by the connector housing. Yet another known way of providing strain relief is to mould a strain relief body out of a deformable material and then use a metal or otherwise deformable crimp ring to deform the strain relief body such that the cable is tightly engaged therein. The body may then be attached to the housing.
While all of the afore going known strain relief apparatus perform admirably, it would be desirable to provide an improvement thereupon such that strain relief may be provided in a simpler and more economical manner. It would further be desirable to provide this strain relief in a manner that reduces the number of parts while still performing adequate strain relief. In addition, this strain relief should be provided in a manner that enables the cable to be easily coupled to the connector housing. Finally, it would be helpful if the strain relief were adapted so that the connector could not be assembled until complete crimping occurs.
SUMMARY OF THE INVENTION
These and other objects are accomplished by providing a strain relief ferrule for attachment to a jacketed cable and attaching said cable to a connector housing in a manner that transmits any load applied to the cable into the connector housing, the strain relief ferrule comprising a deformable body that is crimpable to said cable for attachment therewith, where said strain relief ferrule is also attachable to said connector housing, the strain relief ferrule being characterized in that the deformable body is only retainable in the connector housing upon complete crimping of the strain relief ferrule, the tab is engageable by a retention member of said housing for attachment thereto.
The objects of this invention are also accomplished by providing a connector comprising a connector housing for receiving contacts therein where the housing further includes a mating portion and a cable receiving portion, a jacketed cable having conductors therein to be terminated with the contacts, and a crimpable ferrule received about the cable and crimped thereto, where the cable and crimped ferrule thereupon are received in the cable receiving portion of the housing in a manner that transmits any load applied to the cable to the housing, the connector being characterized in that the crimpable ferrule is engageable by a retention feature within the cable receiving portion of the housing to retain the ferrule only when the ferrule has been completely crimped.
Advantageously then, a strain relief ferrule is provided that may be crimped to the jacket of a cable prior to assembly with the connector housing and then inserted directed into the connector housing and retained therewith. It is another advantage of this invention that by performing the crimping operation the conductors within the cable may be properly orientated. It is yet another advantage of this invention that the tabs
REFERENCES:
patent: 2192165 (1940-02-01), Caldwell
patent: 2216157 (1940-10-01), Charmoy
patent: 2226610 (1940-12-01), Heyman
patent: 2236764 (1941-04-01), Peterson
patent: 2398002 (1946-04-01), Heyman
patent: 2508638 (1950-05-01), Bricker
patent: 4447104 (1984-05-01), Haggard
patent: 4693550 (1987-09-01), Brown et al.
patent: 4767355 (1988-08-01), Phillipson et al.
patent: 4767356 (1988-08-01), Grappe
patent: 4929195 (1990-05-01), Seidoh
patent: 5244415 (1993-09-01), Marsilio et al.
patent: 5466175 (1995-11-01), Onoda
Donovan Lincoln
Nina Driscoll
The Whitaker Corporation
LandOfFree
Crimpable strain relief ferrule having a retention tab thereupon does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Crimpable strain relief ferrule having a retention tab thereupon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crimpable strain relief ferrule having a retention tab thereupon will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2378412