Патент USA US2403642код для вставки
July 9, 1946. J. A; DRAXLER _ ' 2,403,642 TERMINAL BLOCK FOR MOTORS AND THE'LIKE Filed July 23, 1943 _ Z? Q45 ? \@ 5 2 Sheets-Sheet 1 INVENTOR. BY JOHN A.DRAX?LER. 7 13 1 @%%%5.% July 9, 1946. 2,403,642 J. A.'DRAXLER TERMINAL BLOCK FOR MOTORS AND THE LIKE Filed July 2:, 1943 2 shיי?qs-sheet 2 _____'...L C) @_______.§? INVENTOR _ JOHN A.DRAXLER. B??? ' ,MIMQ 2,403,642 Patented July 9, 1946 ' PATENT orrics UNITED \. STAT ES? ? 'l ' 2,463,642 ?TERMINAL BLOCK FOR MOTORS AND I - John A. Draxler, Cleveland Heights, Ohio, vassign or.to The Elwell-Parker Electric Company, Cleveland, Ohio, a corporation of Ohio ? l ' Application July 23, 1943, Serial No. 495,940 4 Claims. . '(Cl. 171-252) 1 2 showing a terminal connection to the block which? This invention relates, as indicated, to a ter _ minal block, but has reference more particularly ? is made from one side of the block; to a. terminal block which is especially adapted Fig. 4 is a view similar to Fig. 3 but 'showing' for use in connection with the motors employed the terminal connection made from the other on industrial trucks for driving?, lifting and other 5 side? of the block; operations usually associated with such trucks. Fig. 5_is a plan view of the assembled lower Heretofore, it has been customary to make the portions of the terminal block; motor leads of motors designed for use on in dustrial trucks extremely long, so as to enable shown ? 10 v Fig. 'I is a plan view of the upper portion of the trial truck models without resorting to the unde sirable practice of splicing wires. At the pres ent time, however, and due to the shortage of terminal block; I ? Fig. 8 is a side elevation of the portion shown in Fig. 7, and critical materials, such as copper wire,>the use of such? long leads is highly undesirable," and, in 15 , ' in Fig. 5;? the motors to be used in a wide range of ind-us some instances, virtually prohibitive. I Fig. 6 is a side elevation of the portions \ The present invention, accordingly, has as its Fig. 9 is an end elevation 01? the terminal block. Referring more particularly ?to the drawings, reference numeral I designates a motor housing having a vertical extension 2 providing a rec primary object the conservation of such materi als by the provision of a terminal block, made of tangular opening 3 at its upperend, the ends of the opening being bounded by ?anges 4? which non-critical materials, and the use of which ren ders unnecessary the use of motor wires of ex 20 are integral with the extension 2. Mounted ?on the vertical extension 2 of the mo tor housing is a terminal block. which consists Another ?object of the invention is provide - of three parts, an upper portion ?4, and a pair of a terminal block which can be entered in either lower portions 5. The lower portions 5 are of of two directions for the connection therewith of 25 identical construction, being provided wit_h_ the motor wires. tenon-like projections 6 at the bottom, which A further object of'the invention is to provide ' extend into the opening 3 and which conjointly treme length. - ? I a terminal block and mounting therefor on a motor, the use of which greatly facilitate disassembly of certain of the motor parts. ? A still further object of the invention is to pro?vide a terminal block of rugged simple construc- tion, and made of a minimum number .of parts which can be readily assembled and disassem Y? substantially ?ll the upper portion of said open ing. ~ / 30 . Each of the lower portions 5 also has a series 4 of longitudinally spaced semi-circular recesses ?I ' in one of its vertical faces, the recessed faces of the portions 5v being in contact" with each other, ?and therrecesses in one portion being opposite bled. 35 those in the other portion, so as to cor'riointly A still further object of the invention is to pro-' form circular vertical holes 8 (Fig. 5) . vide a cable terminal of novel construction. Each of the portions 5, moreover, has a series To the accomplishment of the foregoing and of longitudinally-spaced semi-circular recesses! related ends, said invention, then, consists of the in its upper surface which extend transversely means hereinafter fully described and particu larly pointed out in the claims; the? annexed drawings and the following description setting forth in detail certain structure embodying. the invention, such disclosed means constituting, however, but one of various structural forms in which the principle of the invention may be used. In said annexed drawings: 40 of the recesses 'l and in communication with the latter, the recesses 9 in one of the portions 5 be ing in registration with, the? recesses 9 in the other portion 5. \ ' . , The upper portion 4 of the terminal block tests directly upon the portions 5 thereof, and is pro-< vided in its lower surface with-a series of 'longi tudinally-spaced transversely extending semi-cir Fig. 1 is a perspective 'view of a terminal block cular recesses l0, which are disposed opposite made in accordance with the invention, with portions broken away to more clearly show the 50 the recesses 9 of the portions'i, and conjointly form with the latter, holes H, the axes of which construction; , Fig. 2 is a view, partly in elevation, and partly I are normal to the axes of the holes 8. _ The terminal block is removably secured to the in section, showing the manner in which the _ extension 2 of the motor housing by means of block is mounted upon a motor; , Fig. 3 is a fragmentary cross-sectional view, 55 screws l2, which extend through the ends of the 2,403,042 4 block and into the flange; 4', being in threaded of said ?rst-named portions and having recesses engagement with the latter. The terminal block, as described above, is formed of suitable material of an electrically insulative character, a number of which is read therein which form holes with the recesses in said other faces, said pair of portions having tenon like projections which extend into the motor housing to thereby prevent longitudinal or lateral displacement of the block relatively to said hous iiy available. The motor is provided with?a number of wires or cables II which extend into the extension 2 of the motor housing, and are provided with me ing, and means removably securing the block to said housing. tallic T-shaped terminals. generally designated 2. In combination with a motor housing, a ter minal block comprising a pair of members hav by the numerals it. Each of these terminals has a socketed stem portion II which is soldered or ing abutting faces, said faces having recesses in registration with oneanother for forming an otherwise secured to the wire it, and a tubular opening in the block, said members having re head portion It having a bore l1 extending there cesses in other faces thereof, which recesses through. the walls of which are tapered inwardly 18 extend transversely relative to said opening, a from the ends of the head to the middle thereof. third member adapted to overlie said other faces, Each of the terminals H has the stem thereof said third member having a recess in registra disposed in one of the holes 8 of the terminal tion with the recessesin said other faces, said block, and the head ll thereof disposed in one housing having an opening therein, said pair of of the holes II of the block, the head It being members having portions which extend into said of such a length as to terminate somewhat short 1 opening whereby the walls of the opening en of the ends of the holes I I. gage said pair of members for retaining said pair The heads I! of the terminals are adapted for of members substantially in abutting relation; the reception in either end thereof 01' the taper and means for securing said third member to said housing. terminals ll of wires or cables is, which lead to ?the motor, and which terminals are maintained ?3. A terminal structure comprising, a con in wedging engagement with the tapered walls ductor having two cable receiving portions, one of the bores I1 by means of screws 20, the heads of which are in abutment with washers 2 I, which are interposed between such heads and one end of the heads it of the terminals. of said portions extending transversely of? the other of said portions; an insulation housing for said conductor comprising apair of blocks adapt ed to be secured in abutting relation, said blocks having recesses therein adapted to lie in registra Byv using a terminal block of the aforesaid . character, it becomes unnecessary to provide wires of extreme length, which are required to satisfy ?the requirements of installation of the tion with one another for forming an opening for receiving one of said conductor portions, the other of said conductor portions being adapted to ex tend beyond said blocks; a third block adapted to overlie said pair of blocks, and having a re cess therein for receiving said other portion of said conductor, the walls of said recesses being engageable with said conductor for positioning said conductor; and means for securing said pair of blocks in abutting relation and for securing the third block in overlying relation to said pair motor in a wide range of industrial truck models, where splicing of wires is not desired, and more over, it renders unnecessary the undesirable prac tice of splicing of wires during such installation. Moreover, the wires from the truck wiring can enter the terminal block in either of two direc tions, which is a highly advantageous feature, and the wedging engagement of the tapered ter minais It with the tapered walls of the bores l1 insures a current path of unusually low resist ance and precludes the possibility of loose con of blocks. 45 led into an untapered cylindrical hole and clamped in position by pinching the wire with one ductor comprising a pair of blocks, each of said or more machine screws, as in ordinary common blocks having a recess in one face thereof and a a second recess in another face thereof, said sec The construction of the block, moreover, is such as to greatly facilitate the disassembly of cer tain of the motor parts, such as the commutator ond recess extending transversely relative to first recess, said one faces of said pair of blocks be ing in abutting relation with the recesses there in in registration with one anotherv for forming , pedestal. Other modes of applying the principle of my invention may be employed instead of the one ex plained, change being made as regards the struc-. ture herein disclosed, provided the means?stated by any of the following claims or the equivalent of such stated means be employed. - having two cable receiving portions, one _of? said portions extending transversely of the other of _said portions; an insulation housing for said con nections, which occurs in cases where wires are practice. ' 4. A terminal structure comprising a conductor .60, I therefore particularly point out and distinctly an opening for receiving one of said portions of said conductor, the other portion of said con ductor extending in said second recesses and a third block adapted to overlie said conductor and said other faces of said pair of blocks, said third . block having a recess in registration with said claim as my invention: 1. In combination with a motor housing, a? terminal block mounted on said housing, said block comprising a pair of portions having con tacting faces, and having recesses in said faces coniointly forming holes, and having recesses in other faces thereof which extend transversely to said holes, and another portioncontacting both 70 second recesses for forming an opening for said other portion of said conductor whereby the walls 'of said recesses are engageable with the con ductor for positioning the latter; and means for maintaining said pair of blocks in abutting rela tion and for maintaining said third block in position over said pair of blocks and conductor. JOHN A. DRAXLER.