IL35435A - Telephone handset conector - Google Patents

Description

handset fOT is among the general aims of the Invention to provide a miniature connector that is unusually rugged and dependable Its compact a more specific ject is to provide a connector plug and receptacle such that the connector may be mounted through a aperture the of an instrument case without the use of any rivets or conventional securing with the plug and tacle and connector so designed that the held securely in position under all normal circumstances of use so that it will not be or disconnected by accidental strains on the yet can be quickly disconnected and replaced A further object is to provide a connector having the desirable features above but nevertheless of extremely simple physical so that the of the and the receptacle may consist of a of plastic with the parts individually of such design as to minimize the need for any undercuts secondary operations in the course of A still further object of course is to achieve the desirable results indicated above with a device which is ently of such design that it may be at relatively high speed so that the costs thereof may be kept down to an acceptable level A further object of the invention is to provide a miniature and receptacle suited for use on the telephone handset and so designed that the connector may be manual cou without the use of tools but of such and proportions that it is unlikely to be released by any ordinary manual yet can easily be removed by the use of a simple tool such as a pair of tweezers or slender nose The foregoing objects are in the present invention by of a miniature connector wherein both the receptacle and the carried therein include a tubular body of generally cylindrical extending through an aperture In an instrument wall to an interior cavity with both plug and receptacle having an enlarged portion located exteriorly on the instrument housing and fitted together in such a way that both the and receptacle have two opposite parts relatively sh with respect to each other and so designed as to be capable of automatic interlocking to hold the plug in position under normal circumstances but permit easy release when A present preferred embodiment of invention illustrated in the drawings attached hereto and forming a part of this disclosure Figure is a disassembled view of the connector plug and showing the general relationship of these parts with an instrument illustrated in this instance as being a telephone Figure 2 is a perspective view of the connector being manually inserted into position in the which is in turn received an aperture provided therefor the handset Figure 3 is a perspective view to Figure 2 but showing the preferred manner of uncoupling the connector plug from its receptacle by the use of tweezers or slender nose Figure 4 is an enlarged detail view through the connector assembly showing the and receptacle the spective positions that they assume with respect that they assume with respect to each other and with respect to the housing wall of the strument in which the connector is Figure 5 is a detail view of the or portions of the plug and the view being taken substantially on the plane of the of Figure Figure 6 is an enlarged detail sectional view showing the interlocking latching projections and recesses whereby the plug of the connector is retained in the the view being taken substantially on the plane of the of Figures 4 and Figure 7 is an enlarged detail view to Figure 5 but the positions that the parts assume when the is being uncoupled from the receptacle for removal the view being taken substantially on the plane of the line of Figure Figure 8 is an enlarged sectional view similar to Figure 6 but with the parts in the position they assume during removal of the plug from the In this view the parts are shown as they would appear on Section line of Figure As previously the present connector is ticularly designed to be securing in a single aperture through the wall of an instrument As illustrated in Figure this may be a telephone handset for wherein a circular aperture 10 is provided in the wall I of the to receive and secure the connector eral ly designated The generally designated is for removable insertion into the receptacle and it is contemplated that the plug will have permanently attached to it the usual flexible phone cord or cable including the several insulated wires required for connection of the telephone instrument to side As best seen in Figures and the receptacle 12 slsts of a generally tubular preferably in a circular or cylindrical and formed of some solid type of insulating material yet preferably one that has a considerable degree of such as nylon for In any event the sleeve or cylindrical body portion 15 is provided with a thick solid bottom wall 16 having a number of apertures or contact cavities with shoulder tions 18 so arranged that a number 4 to of electrical contacts having insulated conductors 20 attached thereto may be mounted in the bottom of the receptacle In the construction the contacts have reduced diameter portions 21 that will automatically interlock with the shoulders 18 when the contacts are forced into and the individual contacts are crimped or soldered to the conductors 20 prior to As each contact has a portion 24 projecting into a cylindrical central cavity 26 of the receptacle from the bottom The other end of the receptacle sleeve has an enlarged face flange 28 overlying the edges of the aperture 10 in the housing wall II of the handset so that inward movement of the assembly yond the position shown in Figure 4 is limited by the engagement of this 28 with the outer surface of the The face flange 28 of the receptacle is also provided with a of identical but opposite outwardly extending side walls 30 so that the flange 28 and the 30 coact to form what may be referred to as a portion for purposes after descri The generally cylindrical walls of the sleeve 15 of the receptacle are provided with a number of slots 32 four so that these sidewal Is have considerable and the segments of the sidewal between these slots are provided with integral latching lugs having an inclined cam surface 34 at the end toward the bottom of the sleeve with a shoulder portion 36 adjacent the inside of the II of the These slots thus permit inward flexing of the receptacle sleeve the plug 13 is not position so that when the sleeve of the receptacle is through the aperture 10 in the instrument wall II It will be sel since the cam surfaces 34 will flex the side walls inwardly as they pass through the aperture and the locking shoulders 36 will after prevent removal of the receptacle from the The portion of the best illustrated in Figures I and also comprises a molded piece of solid insulating material such as and also has a tubular sleeve 40 with a relatively thick bottom 42 having a plurality of contact cavities 44 with each of the contact cavities having an internal shoulder so that the narrow neck portions of the individual contact sleeves 48 are after being forced into position the cavities of the The individual contact sleeves 48 are of course positioned and dimensioned to receive the pin portions 24 of the receptacle contacts and are also provided with insulated wire leads 50 crimped or soldered thereto prior to assembly and to the telephone cord of the The outward end of the plug of provided with a generally cylindrical cavity 52 in which anchoring means for the phone cord and leads 50 may be provided if but these facilities are not shown since they form no part of the present The outermost end of the is provided with one or more deep slots however shown in Figure so that the portion of the the portion outside of the housing and normally disposed between the side walls 30 of the split two opposed grip portions 56 and 58 also Figures 5 and The grip portion 56 5 and its leading corners beveled at 60 and 62 and has opposite side recesses or notches 64 and 66 coacting with inwardly projecting latching lugs 68 and 70 on the walls These are also beveled at the forward so that when the plug is inserted into the receptacle the several bevels will act as bearing against their correspondingly beveled surfaces and effective to spread the wall portions 30 of the receptacle enough so that their ing lugs will snap into the corresponding recesses of the and retain the plug against accidental removal from the The opposite portion 58 of the plug is provided with similarly shaped recesses 74 and 76 which cooperate in the same way with the latching lugs 78 and 80 provided in the lower portion of the receptacle walls The recesses and are also provided with beveled surfaces 86 and 88 inclined in directions dicular to those heretofore These coact with similarly inclined cam surfaces 96 and 98 on the detent members 78 and 80 so that the plug may be quickly and easily released if This is according to the present by the outer end of the with a of tweezers or narrow nosed as illustrated in Figure to apply inward force to the opposite grip portions 56 and 58 of the in the directions indicated by the arrows 100 in Figure As these opposite bifurcated portions of the plug move together the cam surfaces on the latching lugs and recesses coact with each other to spread the side walls 30 of the receptacle apart until they assume the position illustrated in Figures 7 and whereupon the is entirely unlatched from the receptacle and may be easily withdrawn From the foregoing it should be apparent that the ings of the present invention provide a very simple and economical type of connector which nevertheless has advantages many In the first the entire connector is held in position in the telephone instrument by the resilient action of the receptacle sleeve and its latching shoulders 36 which are flexed inwardly when the cam surfaces 34 are pressed through the aperture in the instrument but thereafter engage the inside of the instrument cavity to prevent any verse The of the receptacle sleeve is alone sufficient to quite adequate locking of the nector in the but it is further noted that when the relatively solid wal led plug 13 is inserted therein it prevents any possibility of inward flexing of the locking members and thus provides additional assurance against accidental With the receptacle in position as indicated the plug may be inserted sim ly by pushi g it the aperture of the receptacle at which time the cam surfaces spread the side walls of the receptacle and allow the latching lugs to snap into and engage the receptacle recesses and positively lock the plug against accidental Intentional release may be easily accomplished by squeezing the opposite grip portions of the plug thereby spreading the side of the receptacle head sufficiently so that the latches and are entirely The plug may then be withdrawn by straight outward insufficientOCRQuality

Claims (1)

1. An electrical connector comprising a receptacle body having electrical contacts therein and having a recess adapted to receive a said body having a pair of flexible extensions therefrom constituting normally parallel walls with opposed shoulders spaced apart at a distance less than will permit ingress of a human finge between cam surfaces extending from each o said walls toward the opposite a plug member having electrical contacts and adapted to fit in said and a bifurcated head on said plug adapted to pass between said flexible extensions by outward flexing thereof responsive to coaction between said head and said cam surfaces as said plug is inserted into said said head having cavities therein receiving said cam surfaces when said plug is fully received by said allowing said flexible extensions to return to the normal An electrical connector as defined in Claim having a further set of cam surfaces on each of said inclined in directions perpendicular to the first mentioned and coacting with said cavities in said head to flex said extensions toward each other with the plug received in said thus permitting withdrawal of the plug by tweezers or An electrical connector comprising a receptacle having a generally tubular sleeve portion for insertion through an aperture in a mounting and having an enlarged head on the outer end of said sleeve to inward movement thereof with respect to said mounting said sleeve having resilient wall portions capable of flexing and 9 of said wall in combination with a received in the receptacle and fitting within said sleeve ifheroby upon insertion of said plug in said sleeve on said mounting said plug extends beyond said mounting wall and latching devices and fits within said sleeve so closely as to prevent inward flexing of said portions to an extent which would release said latching devices from engagement with said mounting wall adjacent said A connector as defined Claim wherein said enlarged head has outwardly extending parallel wall portions defining a space therebetween conveniently accessible only to narrow tools such as the of and said has an outermost head portion normally disposed between said wall portions when said plug is fully received by said electrical connector comprising a receptacle a generally tubular sleeve portion adapted to be inserted through a aperture in a mounting and having an enlarged head on the outer end of said sleeve to limit inward movement thereof with respect to said mounting said head having outwardly extending parallel wall portions defining a space therebetween conveniently accessible only to narrow tools such as the jaws of said sleeve having rsilient wall portions capable of flexing and latching devices on the exterior surfaces of said resilient wall portions adapted to pass through said aperture by inward flexing of said wall portions in combination with a plug adapted to in the receptacle and to fit within said sleeve so closely as to prevent inward flexing of said wall portions to an extent which would release said latching devices from engagement aaid mounting adjacent said said plug having an outermost head portion normally disposed said wall portions tfhen said plug is fully received said said outermost head portion of the plug being and said parallel wall portions and said outermost head having coacting latc means which means is releasable by moving the bifurcated parts of said plug each insufficientOCRQuality