Patent ID: 6024645
Filing Date: 2000-02-15
Classification: F16D,Y10S

Abstract:
A double Cardan type constant velocity joint comprising:an intermediate housing;first and second yokes,a first cross shaft for connecting said first yoke to said intermediate housing; anda second cross shaft for connecting said second yoke to said intermediate housing,wherein said intermediate housing has a pair of first support arms provided at one end thereof in an axial direction, and a pair of second support arms provided at the other end thereof in the axial direction in equiphase with the pair of first support arms, said intermediate housing including first support holes formed coaxially in end portions of said first support arms and second support holes coaxially formed in end portions of said second support arms,said first yoke has a pair of third support arms provided at an axis-directional end of a first connecting cylindrical portion to which an end portion of a rotary shaft can be connected and fixed, said first yoke including third support holes formed coaxially in close-to-front-end portions of said third support arms, and a first engagement protrusion so formed on an intermediate portion of a first connecting portion for connecting the front ends of said third support arms as to protrude opposite to said first connecting cylindrical portion,said second yoke has a pair of fourth support arms provided at an axis-directional end of a second connecting cylindrical portion to which an end portion of another rotary shaft can be connected and fixed, said second yoke including fourth support holes formed coaxially in close-to-front-end portions of said fourth support arms, and a second engagement protrusion so formed on an intermediate portion of a second connecting portion for connecting the front ends of said fourth support arms as to protrude opposite to said second connecting cylindrical portion,both end portions of a first shaft portion of first and second shaft portions constituting said first cross shaft in a mutually intersecting state, are rotatably supported in said first support holes of said first support arms, both end portions of said second shaft portion are rotatably supported in said third support holes of said third support arms,both end portions of a third shaft portion of third and fourth shaft portions constituting said second cross shaft in a mutually intersecting state, are rotatably supported in said second support holes of said second support arms, both end portions of said fourth shaft portion are rotatably supported in said fourth support holes of said fourth support arms,an axis-directional intermediate portion of said intermediate housing is provided with an angle adjusting member displaceable with respect to said intermediate housing, both end portions, in the axial direction, of said angle adjusting member are formed with first and second engagement holes in equiphase with each other, andangles of inclination of said first and second yokes to said intermediate housing are set coincident with each other by engaging said first engagement protrusion with said first engagement hole and said second engagement protrusion with said second engagement hole in a freely oscillatably displaceable manner,the improvement comprising:the intermediate housing including a support plate which provides the axis-directional intermediate portion of said intermediate housing;a circular hole formed in a central portion of said support plate; andthe angle adjusting member including a crank type angle adjusting member with a cylindrical intermediate portion rotatably supported in said circular hole of said support plate, and first and second crank portions extending along a same diametrical direction of said cylindrical intermediate portion from both end surfaces, in the axial direction, of said cylindrical intermediate portion, said first engagement hole being formed in a front end portion of said first crank portion, said second engagement hole being formed in a front end portion of said second crank portion.