Патент USA US2129372код для вставки
Sept. 6, A1938. D. E. GAMBLE CLUTCH PLATE Filed Fe'b. l5, 1935 2,129,372 Patented Sept. 6, 1938 2,129,372 _ _UNITED STATES PATENT OFFICE 2,129,372 _ CLUTCH PLATE _ David E. Gamble, Chicago, Ill., assignor to Borg Warner Corporation, Chicago, lll., a corpora tion of Illinois ¿Application February 15, 1935, Serial No. 6,624v ' 9 claims. (ci 19e-107) This inventiondrelates to friction clutches for ment with the supports and fastened thereto by ` automotive vehicles and it may also be used inl the rivets I3. I prefer to employ a cylindrical other friction clutches for‘which it is or may be _curvature for .the cushion members »I I, seey Fig. 6, and to position the cushion members upon the Ul The primary object of this invention is to pro disk, so that the axes of curvature are so arranged 5 vide a novel clutch plate with a wide distribution relative to the disc and the facings that the con of points of support for the friction facings which tacting areas between the cushions, the face and are adapted for cushioned engagement in the the disc increase radially relativeto the disc as operation of the clutch. ‘ the plate is' compressed during engagement of 10 Another object is to prevent movement of the the clutch. The tongues 9 are curved to dispose 10 separate cushion members of a cushioned clutch the base and free end of each tongue in engage- . adapted. \ ` - - plate about the mountings therefor. ~ _ment` with the-facing I2 and the central portions -A further object is to provide a cushioned clutc , of the tongues are spaced from the plane ofthe plate having at least one friction facing thereonl disc. A friction facing Il Vis fastened to the cen spaced from the disc wherein the spacing of the trai portions of the tongues by rivets I5 so that 15 facing is provided by means which also cushion the facing Il is in engagement with the inner the facing in addition to separate cushion mem and outer ends of the cushion members II and bers provided for this purpose. is spaced from the plane of the disc. The cushion A stili further object is to provide a cushioned members are provided with lips I6 struck from 20 clutch plate having a friction facing spaced from the cushion members and bent from the convex ’20 the disc by means which also cushion the facing side thereof to engage the supports. iB_in openings in addition to separate cushion members pro I 1 therein provided. 'I'he lips I6 and openings vided for this purpose wherein the plate is cush I'I-cooperate with the rivets I 3 to prevent rotative ioned in stages during engagement thereof in I movement of the cushion members about the- . 25 operation of the clutch. _ ' In the accompanying drawing illustrating the rivets. 25 My invention provides a highly emcient cushion clutch plate wherein the facings are mountedv Fig. 1 is a plan view of the clutch plate showing ~parallelto each other and to the plane of the one facing partly broken away; ' plate and remain so throughout engagement of 30 Fig. 2 is' a sectional view on the line 2 the clutch plate in operation of the clutch. The 30 Fig. 1: y -~ , ' _cushion members may be made of a higher grade Fig. 3 is a sectionalvigw on the line 3-3 of of material than is required in the disc. The Fig. 1; ' . » cushion members are rigidlygheld in operative Fig. 4`is a sectional view on'the line I-I of position between the facings and are positively 35 Fig. 1; held against rotative movement about the mount- 35 Fig. 5 is a sectional view similar to Fig. 4 show ing therefor. The tongues are flexible becauseSof y ing another forni of the invention; and their narrow cross-section at the base and pro Fig. 6 is a perspective view of one of the sep -vide anV efficient additional cushion to the cushion arate cushion members shown in Fig». 1. members -as well as a means for mounting the invention: - ` Referring to the drawing, the clutch plate « spaced friction facings on the clutch plate. 'I'he 40 _ selected for illustration _comprises a disc 1 secured facing I2 is engaged with the support throughout to a hub member l which is adapted to be one entire face of each support and with the mounted on a driven shaft of an automotive base and free end of each tongue in the embodi vehicle. The disc‘is slotted through its periphery ment shown in Figs. 1-4. The curvature of the 45 to form tongues 9 and supports I0 in alternating cushions II and the disposition- of the axis of 45 arrangement. Cushion members II, preferably curvature relative to the disc and to the facing> made of a high 'grade'spring steel, are arranged I 4, is such that when the plate is uncompressed, on the supports on one side of the disc and a . there are two approximately parallel lines of friction facing I2 is arranged on the opposite contact between the facing and each cushion, 50 side of the disc and the cushion members and and one line of contact between Jtheidisc and~ 50 `facing I2 are fastened to the` disc by rivets I3. . each ofthe cushions. As the clutch plate is 'I'he cushion members are curved to normally compressed, however, these lines of contact dispose the inner and outer ends thereof in broaden in directions radial of the disc hub to _spaced relation to the supports and the central increase the area of contact and support. This 55 portions of the cushion members are in engage simple arrangement provides for the maintenance 55_ 2 2,129,372 of uniform yielding facing support circumferen tially of the plate throughout the entire range of clutch plate operation, a feature that is highly desirable in the promotion of long life through uniform spacing Wear. ports and tongues arranged in alternating suc cession at the periphery of the disc, cushion mem bers mounted on the supports, the cushion mem bers and tongues being curved to oiîset parts thereof from the same side of the disc, friction The provision of structurally independent cushf facings arranged on opposite sidesof the disc, ion members of a high-grade spring steel, permits means fastening one facing and the >cushion mem bers to the supports and on opposite sides thereof, the manufacturer to predetermine the exact re sistance to compression of the clutch plate as-_ and means fastening the other facing to the 10 sembly during manufacture without alteration or offset parts of the tongues to cushion the engage 10 change in the structure or thickness of the clutch ment thereof during operation of the clutch. disc 1, and therefore, Without impairing the 4. A clutch plate Acomprising a disc, spaced sup torque transmitting characteristics of the plate. ports and tongues arranged in alternating succes The tongues 9 may be curved, Fig. 5, so that sion at the periphery of the disc, curved cushion 15 only the base of each tongue is in engagement members arranged on one side of the supports, 15 with the facing I2, and the free end of each the tongues being bent from the plane of the disc tongue is bent back but not into the plane of the on the side thereof having the cushion members disc and remains on the side thereof toward thereon, and friction `facings arranged on op which each tongue is bent at its base. This con posite sides of the disc and one- facing spaced struction provides for a cushion which acts in therefrom by the tongues'and ‘cushioned by the 20 stages. The ñrst stage of cushioning in engage tongues and cushion members in engagement of ment of the clutch constitutes the partialstraight the clutch plate during operation of the clutch. ening of the curve in the cushion members Il 5. A clutch plate comprising' a disc, friction and the curve in each tongue between the base facings arranged on opposite sides of the disc, and rivet until the free end of each tongue en» curved cushion members on the disc andbetween 25 gages the facing I2 at which time the second the facings, means fastening the vcushion mem stage of cushioning commences and constitutes bers to the disc to dispose the central portion of the further straightening of the cushion members the convex side in engagement with the disc, and Il and the further straightening of each tongue - means on the cushion members engaging the 30 between the base and rivet plus the straightening disc to retain the cushion members in'position, 30 between the rivet and the free end of each tongue. said means including portions of the cushion The second stage of cushioning continues until members extending outwardly therefrom in the ¿, i» the cushion members H are completely straight direction of the disc and engageable with the disc " " ened and the tongues 9 nearly so. at a point spaced away from said fastening`4V The facing I4 is supported by the central por means. tion of each tongue and by the inner and outer 6. A clutch plate comprising a disc havingLk edges of the cushion members. This provides a » bers on the disc and between the facings, means degree of efficiency. fastening the cushion `members to the discl to ` i While Ihave shown and described the invention opposite sides of the disc, curved cushion mem-»YQ i dispose the central portion‘of the convex side in in a particular type of clutch plate I do not mean engagement with the disc, anda lip struck from ` thereby to restrict the invention to the embodi ments illustrated nor to the type of clutch plate shown for it can be employed in many different embodiments and kinds of clutches and clutch plates with satisfactory results; and therefore I the convex side of each cushion member and extending into an opening in the disc to engage the disc for holding the cushion member against 45 movement about the fastening means;-- ì ' '7. A clutch plate comprising a disc', supports reserve the right to use the invention in any form ` and tongues arranged in alternating succession at . and for any purpose for which it is or may be the periphery of the disc, curved cushion members adapted within the scope of the following claims: mounted on the supports, and friction facings on 50 I claim: opposite sides of the disc, one facing being in l. A clutch plate comprising a relatively thick metal disc, spaced supports and tongues arranged in alternating succession at the periphery of the disc,> relatively thin metal cushion members mounted on the supports, the cushion members and tongues being‘curved to offset parts thereof from the same side of thevldisc, and a friction facing arranged on the cushion members and tongues to cushion the engagementV thereof dur~ ing operation of the clutch. > ` ' A 2. A clutch plate comprising a disc. spaced sup ports and tongues arranged in alternating suc cession at the `periphery 'of the disc, curved cush 65 ion members on one side of the supports vwith the central portion of their convex sides in en 70 openings therein, friction facings arrangedcnI Wide distribution of points of support for each of the facings so that the clutch plate has a high engagement with the supports and the other fac ing in engagement with the ends of the curved cushion members, ‘the tongues being curved to offset the central portion on one side'of the plane 55 of the disc and in engagement with said other facing and the free end thereof being curved back toward the plane of the -disc but not thereinto _ to ‘provide a cushion which acts in stages during " engagement offthel clutch plate during’operation 60 oftheclutch. » ‘ " ' 8. A clutch plate comprising a disc, friction facings arranged one at'each' side of said disc, a plurality of curved cushion members in annular array about thel peripheral region of the disc, means -securing the cushion members to'said _disc ga'gement with the supports, the tongues being with theirfree endspextendingv toward and con curved in a direction opposite to the curvature of tacting with' the adjacent facing.,fthe curvature said cushion members and arranged with the of vsaid cushion„members being cylindrical and central portions thereof spaced from the plane " of the disc, anda friction facing arranged on the ends of the cushion members >and central portion of the tongues to cushion the engagement thereof during operation of the clutch. 3. A clutch plate comprising a disc, spaced sup 75 65 `each generated about an axis that is so disposed `that when the 'cushionsare compressed the con l_tactìng area'. between the cushions and the ad jacent facing surface increases in a radial direc tion, and means forming a part of the cushion members and engageable with the disc for re 75 9,129,372 3 . straining the cushion members against rotation ion members having portions extending away about the axis of their securing means. 9. A clutch plate comprising a relatively heavy sheet metal disc, relatively rigid friction facings from said disc in the direction of the adjacent facing and adapted to contact the inner surface of the facing, each of said cushion members being arranged one on each side of said disc at the ` so formed that when compressed, as by move peripheral portion thereof, and a plurality of ment of the adjacent facing relatively toward the structurally independent and relatively light cushion. the area of contact between the cushion cushion members arranged about said peripheral and facing will increase in a direction radially portion of said disc. means iixing each of said = of the axis of the facing and disc. ' 10 cushion members securely to said disc, said cush ~ DAVID E..GAMBLE.