Ball socket for a ball joint

Patent metadata

Field	Value
Publication number	US-11255376-B2
Application number	US-201716348651-A
Country	US
Kind code	B2
Filing date	Oct 24, 2017
Priority date	Dec 2, 2016
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A socket for a ball joint having a socket body with an opening and a hollow space, which comprises a concave inside peripheral surface that delimits the hollow space and extends around a longitudinal axis, and which is axially divided into two body halves which merge together in a transition zone, each of which comprises an inside peripheral surface half. A first body half comprises a first inside peripheral surface half which lies on a spherical surface and is closed, in the circumferential direction, and a second body half which comprises the socket opening, at least one slot extending axially and a second inside peripheral surface half which is closed in the circumferential direction, or closed apart from the slot. The second body half is designed such that the second inside peripheral surface half lies outside the spherical surface at least an axial distance away from the transition zone.

First claim

The invention claimed is:

1. A ball socket for a ball joint, the ball socket comprising:
a ball socket body which receives a joint ball, the ball socket body having a ball socket opening and a hollow space, which comprises a concave inside peripheral surface that delimits the hollow space and extends around a longitudinal axis orientated in an axial direction and is divided, along the longitudinal axis, into first and second ball socket body halves, one behind the other, which merge into one another in a transition zone,
each of the first and the second ball socket body halves having an inside peripheral surface half of the inside peripheral surface which extends around the longitudinal axis,
the first ball socket body half comprising a first inside peripheral surface half, which directly mates with a spherical surface of the joint ball and being closed in a circumferential direction,
the second ball socket body half comprising the ball socket opening,
the second ball socket body half having at least one slot extending in a direction of the longitudinal axis, and
the second ball socket body half having a second inside peripheral surface half, which in the circumferential direction is closable, or closed apart from the at least one slot,
the second ball socket body half ( 16 ) being designed such that the second inside peripheral surface half ( 18 ) lies outside the spherical surface ( 9 ) of the joint ball at least at an axial distance away from the transition zone ( 14 ), and
a material thickness of the ball socket body, at the ball socket opening is the same as a material thickness of the ball socket body at the transition zone.

2. The ball socket according to claim 1 , wherein the second inside peripheral surface half, at least in its axial distance from the transition zone, has an inside peripheral surface distanced from a mid-point of the spherical surface of the joint ball which is larger than a radius of the spherical surface of the joint ball.

3. The ball socket according to claim 2 , wherein in the circumferential direction, the at least one slot has a slot width and an inside peripheral surface distance is larger than the radius of the spherical surface of the joint ball by a length difference that depends on the slot width.

4. The ball socket according to claim 1 , wherein the ball socket body comprises an outer circumferential surface that extends around the longitudinal axis, the first ball socket body half comprises a first outer circumferential surface half of the outer circumferential surface that extends around the longitudinal axis, and the second ball socket body half comprises a second outer circumferential surface half of the outer circumferential surface that extends around the longitudinal axis, the second outer circumferential surface half is convex and, at least an axial distance away from the transition zone, has an outer circumferential surface distance from a mid-point of the spherical surface of the joint ball which is larger than a distance of the first outer circumferential surface in the transition zone to the mid-point of the spherical surface of the joint ball.

5. The ball socket according to claim 1 , wherein the ball socket body has a wall which either encloses or at least partially encloses the hollow space and which comprises the inside peripheral surface ( 8 ), in which the slot and the ball socket opening are provided, and
along the wall in the axial direction, a material thickness of the wall in the second ball socket body half is constant.

6. The ball socket according to claim 5 , wherein the material thickness of the wall in the second ball socket body half, in the transition zone, corresponds to a material thickness of the wall in the first ball socket body half.

7. The ball socket according to claim 1 , wherein, in the circumferential direction, the at least one slot has a slot width which, starting from the ball socket opening, tapers toward the transition zone.

8. The ball socket according to claim 1 , wherein every curve that lies on the second inside peripheral surface half and extends in the direction of the longitudinal axis forms a circular arc, whose radius is larger than a radius of the spherical surface, so that a mid-point of each circular arc is offset transversely to the longitudinal axis relative to a mid-point of the spherical surface of the joint ball.

9. The ball socket according to claim 8 , wherein each circular arc in or close to the transition zone intersects the spherical surface of the joint ball and, at or in an area of the ball socket opening, is a distance away from the mid-point of the spherical surface of the joint ball which corresponds to a sum of the radius of the spherical surface of the joint ball and a length difference which corresponds to half a slot width divided by the circle number.

10. The ball socket according to claim 1 , wherein the ball socket body is an injection-molded component produced in an injection-molding die, and the at least one slot is closed, in the injection-molding die, by a skin.

11. The ball socket according to claim 1 , wherein the at least one slot is of stepped form having a radially inner slot half and a radially outer slot half, and the radially inner slot half is offset from the radially outer slot half in the circumferential direction.

12. A ball socket for a ball joint, the ball socket comprising:
a ball socket body having a ball socket opening and a hollow space, which comprises a concave inside peripheral surface that delimits the hollow space and extends around a longitudinal axis orientated in an axial direction and is divided, along the longitudinal axis, into first and second ball socket body halves, one behind the other, which merge into one another in a transition zone,
each of the first and the second ball socket body halves having an inside peripheral surface half of the inside peripheral surface which extends around the longitudinal axis,
the first ball socket body half comprising a first inside peripheral surface half, which lies on a spherical surface and being closed in a circumferential direction,
the second ball socket body half comprising the ball socket opening,
at least one slot extending in a direction of the longitudinal axis,
a second inside peripheral surface half, which in the circumferential direction is closable, or closed apart from the at least one slot,
the second ball socket body half being designed such that the second inside peripheral surface half lies outside the spherical surface at least at an axial distance away from the transition zone,
the second inside peripheral surface half, at least in its axial distance from the transition zone, has an inside peripheral surface distanced from a mid-point of the spherical surface which is larger than a radius of the spherical surface, and
in the circumferential direction, the at least one slot has a slot width and an inside peripheral surface distance is larger than the radius of the spherical surface by a length difference that depends on the slot width,
wherein the length difference that depends on the slot width corresponds to a quotient of half the slot width and the circle number.

13. A ball socket for a ball joint, the ball socket comprising:
a ball socket body which receives a joint ball, the ball socket body having a ball socket opening, a hollow space, and a concave inside peripheral surface that delimits the hollow space and extends around a longitudinal axis orientated in an axial direction, the ball socket body being divided, along the longitudinal axis, into first and second ball socket body halves ( 15 , 16 ), the first and the second ball socket

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Richter Thomas
• Prins Hans

Classifications

• F16C2240/40

  Linear dimensions, e.g. length, radius, thickness, gap · CPC title

• F16C11/0638 Primary

  characterised by geometrical details · CPC title

• F16C2240/70

  Diameters; Radii · CPC title

• F16C2220/04

  by injection-moulding · CPC title

• F16C2240/60

  Thickness, e.g. thickness of coatings · CPC title