Патент USA US2115244код для вставки
April 26, 1938. B_ |-|_ SAVAGE 2,115,244 HYDRAULIC CLUTCH Filed Feb. 7, _l954 ‘b 6. 20' 6a 54 ; .412 _ 3 Sheets-Sheet l Snoentor 565/4 ? 574/440: (Ittovneu April 26, 1938. ' B. H. SAVAGE 2,1 15,244‘ HYDRAULIC CLUTCH Filed Feb. 7, 1954 ' ‘545/4 s SheetS-Sheet 2 SAv/QGEMMM attorney . April 26, 1938. ’ 2,1 15,244 B. H. SAVAGE HYDRAULIC CLUTCH Filed Feb. 7, 1934 a1 3 ‘Sheets-Sheet 3 % / 2 52 \ M Imventor ‘T 545/4 /7.’ (Ittorneg 3 Patented Apr. 276‘, 1938 * 2,115,244 UNITED STATES- PATE'NT orrica " Savage Research Corporation, San Diego, Calif. ' . Application February 7, 1934, 2 Claims.‘ No. ‘710,118 (01. lea-5s) _My invention relates to hydraulic clutches, and the objects of my invention are: ~ . _ parts and portions throughout the several views ' of the drawings. Casing I, cover .2, shaft 3, bearing 4, packing First, to provide a hydraulic clutch which in corporates automatic means for bypassing oil vgland 5, rotor 6, bearing 1, sliding vanes 8, springs 9, valve Ill, ?exible diaphragm ll, pin l2, collar when the load on the clutch exceeds a predeter mined amount so that the speed of the engine and l3, sleeve l4, set screws l5, levers‘ l6, weights l'l the driving side of the clutch may be maintained vand spring l8 constitute the principal parts and of my novel hydraulic clutch. . when the 'load on the driven side is increased, portions > A casing l is provided which is incorporated thereby eliminating overloading of the engine as integrally with a ?y wheel la adapted to be se-. 10 well as excessive pressure‘in the clutch mecha cured in the conventional manner to the crank nism; , . shaft of an internal combustion engine. . The Second, to provide a hydraulic clutch which is rear side of thecasing I is provided with an ec particularly compact of construction so that it centrically disposed circular recess, designated _lb.. may bemounted between the engine and trans Between the recess lb and the forward side of 15 mission of a conventional vehicle; , Third, to provide a hydraulic clutch which is so .the' ?y wheel portion there is providedv an eccen arranged that it only partially engages when the trically mounted mass of material, designated lc,' clutch pedal is released and complete engagement‘ which compensates for the eccentricity of the is delayed until the speed of _ the driven side 20 reaches a predetermined amount‘; Fourth, to provide a hydraulic clutch which in corporates a sliding vane and eccentrically ar ranged pumping chamber with centrally con trolled bypasses from the high to the low ‘pres sure side of the chamber so that control thereof may be readily and quickly effected, and Fifth, to provide on the whole a novelly con structed hydraulic clutch mechanism which is durable, e?icient in its action and-which will not 30 readily deteriorate or get out of order. With'these and other objects in view as will appear hereinafter, my invention consists of cer recess lb so that the casingv'l may be ‘both dynamically and statically balanced. ' 1,5 20 The forward side'of the casing [receives a cover member 2 which is bolted to the casing by its peripherialportion and forms a sealed con nection therewith. The cover 2_ journalsa cen trally disposed shaft 3 by means of a bearing 4. ’ 25 The shaft protrudes through a suitable packing gland 5. v The shaft 3 is secured to a rotor 6' which is con centric therewith and mounted in the recess lb. The forward side of the rotor 6 is provided with 30 a stem Gd which is supported by a. bearing ‘l in the casing I, as shown best in Fig. 1. > The rotor 6 is provided with a plurality of. tain novel features of construction, combination equally spaced radiating slots 6a each of which and arrangement of parts and portions as will be receives a sliding vane 8. Coil springs 9 ?t into 35 35 hereinafter described in detail and particularly sockets provided in the bases of the slots 6a and set forth in the appended claims, reference being extend into registering sockets provided-in the. had to the accompanying drawings and to the vanes 8 so as to urge the vanes against the inner characters of reference thereon which‘ form ‘a periphery of thegrecess lb. The rotor 6 is also part of this application, in which: provided with a plurality of diametricallyextend 40 Figure 1 is a longitudinal sectional view of the ’ ing passages 6b which intersect its periphery be hydraulic clutch mechanism taken through l—-l tween the several vanes 8. The diametrically ex of Fig. 6; Fig. 2 is a fragmentary‘ sectional view passages 6b intersect a common recess 60 similar to Fig. 1 showing the parts in the position tending assumed when the clutch is in engagement; Fig. extending forwardly from the rear side of the 45 ' . 3 is a transverse elevational view taken along the rotor. The shaft 3 is provided with a bore there line 3-3 of Fig. 1 with the 'cover plate of the through is enlarged at its forward end as clutch housing and the stub shaft extending indicatedwhich by 30.. The enlarged portion 3a receives from the rotor removed together with the valve a valve head Illa. of a’valve member ID. Said mechanism and with parts and portions broken valve member includes a valve stem lob which 50 50- away and in section to facilitate the illustration; extends into the constricted portion of the bore; Fig. 4 is a transverse sectional view through |—4 designated 3b. Between the portions 30. and 3b of Fig. 2 illustrating the stub shaft and ?exible. of the bore said bore is internallyxthreaded to partition; Fig. 5 is a transverse sectional view receive one end of a ?exible diaphragm‘l l, the re through 5-5 of Fig. 1; Fi'gr? is a transverse‘ maining end of which is secured to the valve head 55 55 sectional'view through 6-6 of Fig. 1; Fig. 7 is a llla. Said ?exible diaphragm is formed of sheet fragmentary sectional view through '|—‘l of Fig. metal with a. series of annular corrugations 3; Fig. 8 is a fragmentary sectional view through 8-8 of Fig. 3, and Fig. 9 is a perspective view of pressed therein so that the diaphragm is capable of contraction and expansion and serves to pre-_: ' one of the vanes. 60 Similar characters of reference refer .to similar , vent leakage between the valve l0 and shaft 3 2 2,115,244 and also serves to unseat'the valve I0 sufficiently ,to permit the oil to force the valve open. The _ valve head Illa is adapted to ?t into the recess 60 which forms a valve seat therefor. The rear end of the valve stem IIlb receives a transversely extending pin l2 which projects diametrically through slots 30 formed in the shaft 3. 'The extremities of the pin I2 ?t in an an nular channel I3a provided in a collar I3 which 10' surrounds the shaft 3, as shown in Figs. 1, 2 and 5. r oil through the passages 6b,'whereupon the shaft 3 is caused to rotate. As the speed of the shaft 3 increases the weights I ‘I are thrown outwardly by centrifugal force causing the lugs I6a to press ' forwardly on the collar I3 and further close the valve until at a predetermined speed of the shaft 3 the valve I0 is completely closed'and the clutch is “engaged”; that is, the passages 61) are com pletely shut off and the rotor 6 is secured against movement relative to the casing I. _ It will be here noted that with the above con The shaft 3 supports a sleeve I4 rearwardly of ‘ struction and operation that in case of heavy the collar I3. Said sleeve is limited in its axial loading or extreme pressure in the clutch mecha ' movement by means of set screws I5 which ex nism, the shaft 3 will be slowed down causing 15 tend into channels 3d‘provided in the shaft 3. the weight I‘! to move inwardly toward the shaft Said sleeve I4 is provided with an annular chan which will release the member I3 to the extent nel I4a adapted to receive a yoke or other con ventionalmeans connected with a clutch pedal, not shown. Theforwardjend of the sleeve I4 is 20 provided with a plurality of equally, spaced brack et portions I 4b which are adapted to journal levers I6. Said levers normally extend outwardly and forwardly and terminate in weight portions IT. The. remaining legs of the several levers I6 ‘p 25 extend radially inwardly into slots provided in the ' sleeve I4 and form 'cams or lugs IIia adapted to - bear against the rear side of the collar I3, as shown in Figs. 1 and 2. The sleeve I4 tends to move to its forward position by the action of a ' 30 suitable spring I8. ,The cover 2 is provided with a recess 2a sur rounding the shaft 3 and adjacent the rotor 6. A similar recess Id is centered in the recess Ib and is located between the rotor and-its bearing 35 1. The recesses 2a and Id are intersected by radially extending channels 22) and le, respec tively. 1 These channels extend to the low side of the rotor. Also the side walls of the rotor in wardly from its peripherial portion are relieved. 40 Further the rotor is provided with a small passage leading from the valve seat 60 to the extremity of the boss 6d and other small ports or passages of said slow down permitting the oil pressure to _ get behind the valve and move it open su?iciently to eliminate the overloading of, the engine as well ' as excessive pressure in the clutch mechanism. It will be noted that there is provided slight 20 clearance between the rotor 6 and the casing I at the tangent portion to permit a fluid flow and prevent the fluid‘being trapped between the vane 8 and the point of tangency of the rotor and casing._ . , - 25 > Though I have shown and described a particu lar construction, combination and arrangement of parts and portions, I dov not wish to be limited to this particular construction, combination and ' arrangement, but desire‘to include in the scope 30 of myinvention the construction, combination and arrangement substantially as set forth in the appended claims, I , 1 Having thus. described my invention, what I claim as new and desire to secure by Letters 35 Patent is: . 1 , 1. In a hydraulic clutch, a statically and dy namically balanced ?y wheel structure having an eccentrically disposed casing portion, a. rotor dis posed concentrically with respect to the ?ywheel 40 structure and ‘mounted in the casing portion leading to the shoulder adjacent the bearing sup [forming therewith a pump chamber, a plurality port portion of said boss. Any oil that drains of vanes dividing said pump chamber into come into the recess Id or the recess 2a is withdrawn partments, ?uid passages connecting said com-' through the channels I'e and 2b byreason of the partments to permit passage of ?uid into and out fact that the pressure in the low side of the rotor of said compartments to permit relative move is less. By the “lowhside”. is meant the side in ment of the rotor ‘and fly wheel structure, valve . which the chamber formed between the rotor, means for controlling said passages, and a cen- , the recess Ib and vanes 8 isv enlarging as the trifugally responsive means for operating said rotor turns. Wis The pressure side of each vane 8 is provided with one or more longitudinally extending chan nels 8a which allow oil to pass into and out of the spaces formed between the inner ends of these vanes and the slots 6a. During rotation the pressure of the oil in these spaces aids in holding the vanes against the inner periphery of the recess Ib. 60 r .' f , Operation of the hydraulic clutch is as follows: When the valve II] is withdrawn from the valve seat 60 the clutch is in its neutral position which ‘is the position shown in Fig. 1. Wheni the clutch is in its neutral position the oil which completely ‘ 50 2. In a hydraulic clutch, a casing means, a rotor ' valve means. mounted therein, said rotor and casing means being relatively eccentric and forming therebe tween a ?uid chamber, radiating sliding vanes carried by said rotor and engaging the periphery 55 of said casing to divide said chamber into a'plu rality of compartments, said rotor having pas sages radiating from, a common center to each compartment and a valve seat at the' center or juncture of said passages for simultaneously con 60 trolling the same, a hollow shaft extending from ’ said rotor through said“ casing, a valve mounted in said shaft and adapted to engage said seat for 65 ?lls the base between the rotor and ‘its casing, the ' controlling said passages to seal said compart _ various ‘ passages and rec‘esses communicating one from the other, and means for op-' 65 therewith, is free to surge back and forth through .ments erating said valve, said means comprising a cen-‘ the passages 6b passing the recess or valveseat trifugally responsive mechanism engagcablc with portion Be. When the clutch pedal is released in the usual mannervthe spring I8 moves the. said valve tending to close the same as the speed 70_ sleeve I4 forwardly to its extreme position, as of the shaft increases-and a manually operated shown by dotted lines in Fig. 1, thus partially device for shifting said mechanism bodily to effect 70 closing the valve 10 and restricting the ?ow of partial closing of said valve. I BASIL H.‘ SAVAGE.