JPS646415U

JPS646415U -

Info

Publication number: JPS646415U
Application number: JP9940887U
Authority: JP
Priority date: 1987-06-30
Filing date: 1987-06-30
Publication date: 1989-01-13

Description

[Brief explanation of the drawing]

第１図は本考案のボールジヨイントを示す縦断
面図、第２図はボールシートの平面図、第３図は
第２図の―線断面図、第４図はソケツトの縦
断面図、第５図はボールジヨイントの組立て状態
を示す部分拡大図、第６図は従来のボールジヨイ
ントの組立て状態を示す部分拡大図である。１０……ボールスタツド、１１……ボールヘツ
ド、２０……ボールシート、２２……凹球面座、
２４……凸球面部、２５……円筒面部、３０……
ソケツト、３２……円筒面部、３４……凹球面部
、４０……閉鎖板。 Fig. 1 is a longitudinal sectional view showing the ball joint of the present invention, Fig. 2 is a plan view of the ball seat, Fig. 3 is a sectional view taken along the line - - of Fig. 2, and Fig. 4 is a longitudinal sectional view of the socket. FIG. 5 is a partially enlarged view showing an assembled state of a ball joint, and FIG. 6 is a partially enlarged view showing an assembled state of a conventional ball joint. 10...Ball stud, 11...Ball head, 20...Ball seat, 22...Concave spherical seat,
24... Convex spherical surface part, 25... Cylindrical surface part, 30...
Socket, 32...Cylindrical surface portion, 34...Concave spherical surface portion, 40...Closing plate.

Claims

[Claims for Utility Model Registration] A ball stud 10 that integrally has a ball head 11, a concave spherical seat 22 on the inner surface that is connected to the top opening 21 and in which the ball head 11 is fitted and seated, and a recess 23 on the bottom surface of the concave spherical seat 22. A ball center O ₁ is provided on the outer surface of the stud axis l passing through the ball center O of the concave spherical seat 22 at a distance e from the ball center O toward the opening 21 side. A convex spherical surface portion 24 with a radius R formed from the opening 21 to a plane containing the spherical center _O1 , and a diameter D formed from the end of the convex spherical surface portion 24 to the bottom surface.
The cylindrical surface portion 25 of the concave spherical seat 22 is provided with a protruding portion 26 on the bottom surface, and the bottom surface concave portion 23 of the concave spherical seat 22 is provided from the opening portion 21.
Several grooves 27 are formed along the grooves, and a groove 2 is continuous with the grooves 27 and opens in the bottom recess 23.
8; and a convex spherical surface portion on the outer surface of the ball seat 20 that extends from the lower end opening 31 on the inner surface and has a diameter d smaller than the diameter D of the cylindrical surface portion 25 on the outer surface of the ball seat 20. The ball seat 20 is formed from a cylindrical surface section 32 extending beyond a plane including the spherical center _O1 of 24 and an upper end opening 33 from the terminal end of the cylindrical surface section 32.
A concave spherical part 34 that is concentric with and has the same diameter as the convex spherical part 24 on the outer surface, an abutting part 35 formed to protrude inward at the upper end opening 33, and a lip part 36 formed at the periphery of the lower end opening 31. A ball seat comprising: a socket 30 having a socket 30; a closing plate 40 having a recess 41 in the center and a flat part 42 around the periphery; 20 is press-fitted into the socket 30, and a gap S is maintained between the bottom surface of the protrusion 26 of the seat 20 and the bottom surface of the recess 41 of the closing plate 40, and the bottom surface of the seat 20 abuts against the flat surface 42 of the closing plate 40. A ball joint for a tie rod, characterized in that the stud is pressed in the axial direction of the stud, and is assembled by creating a large interference between the cylindrical surface portion 25 and the bottom surface of the ball seat 20.