Патент USA US2108916код для вставки
Feb. 22, 1938. 2,108,916 H. w. CHAPLIN CONNECTER PLUG Filed Aug. 7, 1934 30 // r ‘ _. Inventor ‘ h’. 14/; a’?a/b/lk @250” 19 ‘hAttorney 2,108,916 Patented Feb. 22, 1938 UNITED‘ STATES PATENT OFFICE 2,108,916 CONNEC'I'EB PLUG Hershel Wayne Chaplin, Morgantown, W. Vadas i signor of one-fourth to S. A. Phillips, and ii! teen percent to Richard Earle Davis, both of Morgantown. W. Va. Application August 7, 1934, ‘Serial No. 738,862 ‘ SClaims. (Ci. 173—343) My invention relates generally to electrical pressed below the floor of the recess 13' as shown in Figure 2. A bushing 29 has its upper'end cable or cord connectors, and particularly to con abutting the lower end of the insulatorlcup i9 necters of the plug type, 'and an important ob ject of the invention is to provide a plug connecter and has its lower end arranged ?ush with the 5 of the type indicated wherein the receptacle por-. lower end of the body 8 and engaging the upper tion and the plug portion can be more easily and surface'of a dielectric plate 2|. quickly separated, notwithstanding the fact’ that ductor, 22 passes through the lower end of the insulator cup 59, through the bushing 20 and through the head 23 on the plate 2!; and the pin is riveted within the‘ insulator cup l9 and against the lower side of the head on the plate 2|. The riveted portion of- the pin within the they are in adequately connected condition in ordinary circumstances. ’ Another important object of my invention is to provide a simpli?ed and ei?cient plug con necter of the character indicated above which is capable of being made at low cost. ‘Other objects and advantages of my invention 15 will be apparent from a reading of the following description in connection with the drawing wherein for purposes of illustration I have shown a preferred embodiment of my invention. In the drawing: Figure 1 is a side elevational view of the con-V 20 10 necter plug. . Figure 2 is a transverse vertical sectional view through Figure 1. Figure 3 is a side elevational view of the plug 25 portion. Figure 4 is a bottom plan view of the releas ing collar on the plug portion. Referring in detail to the drawing, the nu meral 5 refers generally to the plug connecter 30 which is composed of the female receptacle por tion 6 and the male plug portion l. The female receptacle portion 6 is formed of a generally cylindrical dielectric body 8 which has on its lower end a threaded ferrule 9 adapted 35 to be screwed into an outlet, such as a base out let or socket receptacle and has on its upper end a portion. ill of relatively greater diameter whose upper part is beveled as indicated at H. The upper part of the body 8. has therein a frustro-conical recess l2 which opens into the top of a cylindrical recess 53. ‘ In the cylindrical recess i3 is arranged an annular contact member it which is slightly smaller in diameter than the diameter of the re 45 cess i3 and has on its lower end the ?ange 85 which engages the top of a helical spring. 66 lying on the bottom of the recess l3 in such a way as. to normally force the contact member It up wardly to engage its cupped upper part iii. A 50 conductor i8 connects the contact is with the threaded ferrule or shell 9. - An inverted frustro-conical insulator cup 19 is arranged concentrically spaced within the an nular contact member M within the recess i3, 55 the insulator cup l9 having its lower end de A riveted con insulator cup it constitutes a contact to be en gaged by a contact member on the plug portion of the plug connecter, while the riveted portion on the lower ’end of- the pin engaging the head of the plate 2! forms the contact for engaging the contact in the receptacle or socket to which the plug connecter may be connected. The plug portion ‘i comprises the dielectric solid body 2'5 which is generally cylindrical in ' form and has a frustro-conical lower part 28 . which is adapted to seat in the frustro-conicalj recess it of the receptacle portion when the plug portion and the receptacle portion are as sembled as shown in Figure 2. The upper end of the frustro-conical portion 26 is beveled as indicated at 2'! to provide a surface for spread ing latches to_ be described. At three equally circumferentially spaced places the body 25 has 30 above the beveled portion 21 radially inwardly extended notches 28 in each of which is arranged in a chordal direction-a part of a pivot ring 29 on which is hinged a latch 30, the ring 29 en circling the body 25. Each latch comprises the long arm 3i provided at its radially outward end with the right angular ‘ book 32 and hinged at its inward extremity on the ring 29. On the upper side of the portion of the arm 3! adjacent ‘the ring 29 but at a position 40 slightly radially outwardly thereof is the foot 33. When the plug portion is connected to the re ceptacle portion as shown in Figure 2, the lower side of the latch 38 will rest upon the extreme upper edge of the beveled portion 21 and on the , , beveled portion ll of the body 25, in which posi tion the hook 32 engages under the lower edge 34 of the beveled portion ii on the receptacle body 8. - ' Telescoped on and concentrically spaced from the cylindrical upper part of the body 25 is the releasing collar 35 which has 9. depending skirt portion 36 which is provided at the three circum ferentially spaced intervals with openings 31 through which the latches 30 are arranged as 2 . 2,108,316 helical spring 40 whose upper end is con?ned by 48 to enter the member IS in concentrically spaced manner. A helical spring 49 is located in an accommodating recess in the bushing 41 and works between the bottom of the recess in the bushing 41 and a cross member 50 connected to the pin 46 in such a way as to keep the pin 48 pressed downwardly to engage its contact head 5| withthe upper contact of the conductive pin 22 which is located within the member ID, when the plug portion is connected with the re ceptacle portion. A conductor 52 traverses the a ?ange 4| on a cap 42, whereby the releasing body 25 and has one end connected to the con indicated in Figure 2 and in Figure 1. The por tion of the skirt} above each opening 31 is in teriorly rounded as indicated at 38 to cooperate with the angulated outer end portion of the foot 33 and also the upper side of the long arm 3|. of the respective latch on which the skirt rests ' in the assembled condition of the connecter. The collar 35 has an interior ?ange 39 concen trically spaced from the body 25 and against the 10 upper side of which works the lower end of _a tact cylinder 53 and its remaining end connected rection. The eilect of the downward position of to one or the wires 01' the cable or cord 43. The 15 the collar 35 is to push the skirt down on the contact member 53 surrounds and receives the 15 upper side of the latches '30 and thereby yield ’ bushing 4'! and is itself ?tted in the receiving ably urge the latches in the contracting direction opening in the lower end of the body 25 and the ’ so as to clamp on the mentioned receptacle por member 53 has "on its lower end and engaging tion in such a way that the plug portion and re the bottom of the body 25 the rounded annular 20 ceptacle portion will pull ‘apart if a relatively contact ring 54 which is received in the cupped 20 strong pull is exerted on the cord or cable 43 formation H of the contact member l4 in the while the receptacle portion 6 is held, which receptacle portion 6 as shown in Figure‘2, when would otherwise break the cord or cable 43. the plug portion is connected to the receptacle. However, in ordinary service, the latches 30 will The member l9 provides adequate segregation of collar 35 is normally pressed in a downward di 25 securely hold the plug. portion and the receptacle portion, together and they may be rotated rela tive to each other‘while so connected. It will be observed that in the normal position of the parts described the foot portion 33 of the latches is 3.0 above and slightly radially outward of the curved portion 38 on the interior of the skirt of the re leasing collar 35. When the releasing collar35 is grasped and moved in a direction to compress the spring 40 35 while the plug and receptacle portions are con nected, the rounded part 38 of the skirt of the releasing collar will ride against the outer end of the foot 33 and spread the latches 30 and at the same time the lower end of the skirt will be dis 40 engaged from the upper side of the long arm 3| of the latches and permit the latches to spread sufficiently to disengage from the receptacle por tion. The movement of. the releasing collar in the direction indicated will cause the rounded 45 part 38 to have a cam action on the foot 33 of the latches which spreads the latches and un hooks the hook portions 32 of the latches from the receptacle portion, so that the plug portion and the receptacle portion may be separated sim 50 ply by moving them in opposite‘ axial directions. The plug portion 1 may be assembled or con nected to the receptacle portion 6 simply by roughly axially alining the plug portion and the receptacle portion and pushing them together. 55 It will be noticed that as the latches 30 are en ' the various contacts. _ Although I have shown and described herein a preferred embodiment of my invention, it is to be de?nitely understood that I do not desire to limit the application of the invention thereto, and any change or changes may be made in ma 30 terials, and in the structure and arrangement of parts, within the spirit of the invention and the scope of the subjoined claims. What is claimed is:— 1. A plug connecter comprising two dielectric separable bodies,. one of said bodies having an annular retaining portion, latches pivoted on one of said bodies and engageable with said annular retaining portion, a sleeve mounted for longi tudinal movement on said one body, said sleeve 40 being movable to an axial position to engage with I a ?rst portion of said latches in a manner to hold the latches engaged with said annular re taining portion, said sleeve being movable to an opposite axial position to engage with a second 45 portion of said latches in a manner to hold said latches disengaged from said annular retaining portion so as to enable separation of said bodies,‘ one of said bodies having a centralized stationary contact and the remaininglbody having an axial 60 spring pressed contact engageable with said cen tralized stationary contact, ?rst annular con— tact means on said remaining body and sec ond annular contact means on said one body arranged to be’ in engaged positions while 55 gaged with and are spread by the beveled portion said bodies are connected together, and a di H on the receptacle portion in the act of pushing electric tubular member spaced radially in the plug portion into engagement with the re . wardly from the ?rst and second annular con ceptacle portion, the frustro-conical part 26 of tact means and surrounding said spring contact 60 the plug portion advances into the receptacle whereby said axial spring pressed contact is posi portion ahead of the rest of the plug portion. tively prevented from becoming engaged with This produces early engagement of the contact either of said annular contact means at any time. 5| of the rod 46 with the upper head of the con -2. A plug connecter comprising two dielectric tact 22. separable bodies, one of said bodies having an 65 The cable or cord 43’ passes through the cap 42 annular retaining portion, latches pivoted on one which is threaded on the upper end of the body of said bodies and engageable with said- annular 25 as indicated at 44, and the wires in the cable retaining portion, a sleeve mounted for longi or cord 43 pass through accommodating open tudinal movement on said one body, said sleeve ings in the body 25, and one of the wires is con being movable to an axial position to engage with 70 nected to an L-shaped connection 45 located in a ?rst portion of said latches in a manner to hold 70 teriorly of the body 25 and having an opening the latches engaged with said annular retaining through which slides an axially arranged contact portion, said sleeve being movable to an opposite pin 46 which passes through the lower end of the axial position to engage with a second portion body 25 and through a bushing 41 whose lower. of said latches in a manner to hold said latches end is frustro-conical or tapered as indicated at disengaged from said annular retaining portion so 75 '75 3 2,108,916 tion of said latches in a manner to hold said as to enable separation of said bodies, one of said bodies having an axial spring pressed contact, a latches disengaged from said annular retaining body with which said spring pressed contact is one of said bodies having an axial spring pressed engageable, ?rst annular contact means on said one body and second annular contact means on remaining body with which said spring pressed contact is engageable, ?rst annular contact " centralized stationary contact on the remaining ' portion so as to enable separation of said bodies, said remaining body arranged'to be in engaged positions while said bodies are connected to gether, and means spring pressing said second 10 annular contact means toward said ?rst annular contact means. 3. A plug connector comprising two dielectric separable bodies, one of said bodies having an annular retaining portion, latches pivoted on one 15 of said bodies and engageable with said annular retaining portion, a sleeve mounted for longitudi nal movement on said one body, said sleeve being movable to an axial position in engagement with a first portion of said latches in a manner to hold 20 the latches engaged with said annular retaining portion, said sleeve being’ movable to an opposite axial position in engagement with a-second por contact, a centralized stationary contact on the means on said one body and second annular con tact means on said remaining body arranged to be in engaged positions while said bodies are con 10 nected together, means spring pressing said sec ond annular contact means toward said ?rst. an nular contact means, and a dielectric tubular member surrounding and projecting axially from said centralized stationary contact and spaced 15 radially inwardly from said ?rst‘ and second an nular contact means whereby said axial spring pressed contact is positively prevented from be coming engaged with either of said ?rst and sec ond annular contact means at any time. nnasnm. WAYNE CHA‘PLIN.