Ball joint

Abstract

A ball joint having first and second articulated coupling parts having interconnected liquid ducts. The second coupling part is held pivotably by a spherical front end region between a shape-adapted joint socket on the first coupling part and a joint head on a holding element in the inner cavity of the second coupling part. The holding element interconnects the liquid ducts, and the second coupling part has, on its inner wall delimiting the inner cavity, an annular groove with a ring seal. A first annular shoulder is on the inner wall of the second coupling part, an annular insert part is insertable into the inner cavity of the second coupling part, and the insert part is spaced apart from the first annular shoulder such that the spacing between the first annular shoulder and the front edge of the insert part facing the first annular shoulder forms the annular groove.

Claims

1. A ball joint (1), comprising a first coupling part (2), configured to be fastened to a sanitary water line, a second coupling part (5) connected in an articulated manner to said first coupling part, said first and second coupling parts including liquid channels connected to one another, a holding element (9) provided in an inner cavity (4) of the second coupling part (5), the second coupling part (5) is held pivotably by a spherical face end region (6) thereof, configured as a spherical cap or segment of a sphere between a form-adapted joint socket (7) configured as a complementary concave spherical segment on the first coupling part (2) and a joint head (8) on the holding element (9) provided in the inner cavity (4) of the second coupling part (5), the holding element (9) including a connecting shaft (10) that passes through a push-through opening (11) of the second coupling part (5) and engaging on the first coupling part (2) and connects the liquid channels of the first coupling part (2) and of the second coupling part (5) to one another, an annular groove located on an inner wall bounding the inner cavity (4) of the second coupling part (5), an annular seal (13) which provides a seal between the second coupling part (5) and the holding element (9) located in the annular groove, a first annular shoulder (14) is provided on the inner wall of the second coupling part (5), an insert part (15) that is annular or sleeve-shaped is insertable into the inner cavity (4) of the second coupling part (5), the insert part (15) is held on the inner wall of the second coupling part (5), the insert part (15) is spaced apart from the first annular shoulder (14) such that a spacing between the first annular shoulder (14) and a face edge (16) of the insert part (15) which faces the first annular shoulder (14) forms the annular groove, wherein the insert part (15) is insertable into the inner cavity (4) of the second coupling part (5) as far as a stop formed by a second annular shoulder (17) provided on the inner wall of the second coupling part (5), and wherein the insert part (15) extends between the second annular shoulder (17) and a third annular shoulder (18), and the third annular shoulder (18) and an adjacent face edge (19) of the insert part (15) are arranged in a common plane.

2. The ball joint as claimed in claim 1, wherein the insert part (15) is held with at least one of a form fit or frictional engagement on the inner wall of the second coupling part (5).

3. The ball joint as claimed in claim 1, further comprising a sealing ring (20) that bears against the third annular shoulder (18) and the adjacent face edge (19) of the insert part (15).

4. The ball joint as claimed in claim 3, further comprising a sanitary insert cartridge inserted into the inner cavity from that face opening (3) of the second coupling part (5) which faces away from the first coupling part (2).

5. The ball joint as claimed in claim 4, wherein the sanitary insert cartridge bears against the face edge (19) of the sealing ring (20) which faces away from the insert part (15).

6. An assembly comprising the ball joint as claimed in claim 1, a handheld shower attachment releasably held on the first coupling part (2) or the second coupling part (5), and a flexible hose line held on the other of the first coupling part or the second coupling part respectively (5; 2).

7. The ball joint as claimed in claim 1, wherein the first coupling part (2) is configured as a hose connector (21) in an end region thereof, which faces away from the second coupling part (5), onto which hose connector (21) a hose end of a partial of the water line is pushable.

8. The ball joint as claimed in claim 1, wherein the insert part (15) that is annular or sleeve-shaped is produced from plastic.

9. The ball joint as claimed in claim 1, wherein the insert part (15) that is annular or sleeve-shaped is produced from a heat-resistant material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Developments according to the invention emerge from the following description of a preferred exemplary embodiment in conjunction with the claims and the drawing. The invention is described in more detail below with reference to a preferred exemplary embodiment.

(2) In the figures:

(3) FIG. 1 shows a ball joint represented in a side view, which has a first coupling part on which a second coupling part is held pivotably,

(4) FIG. 2 shows the ball joint shown in FIG. 1 in a longitudinal section through the sectional plane II-II from FIG. 1, where it can be seen in this longitudinal section that the second coupling part of the ball joint has an inner cavity, and that in the inner wall, bounding the inner cavity, of the second coupling part an annular groove is provided, which is formed between a first annular shoulder provided in the inner wall and the adjacent end face of an insert part inserted into the inner cavity,

(5) FIG. 3 shows the insert part, intended for inserting into the inner cavity of the second coupling part, of the ball joint shown in FIGS. 1 and 2 in a perspective side view, and

(6) FIG. 4 shows the ball joint in a pulled-apart perspective representation of its constituent parts.

DETAILED DESCRIPTION

(7) FIGS. 1, 2 and 4 represent various views of a ball joint 1. The ball joint 1 has a first coupling part 2, which can be connected to a sanitary water line. In this regard, the first coupling part 2 of the ball joint 1 is connected in an articulated manner to a second coupling part 5, wherein the first coupling part 2 and the second coupling part 5 have liquid channels which are connected to one another.

(8) The second coupling part 5 of the ball joint 1 represented here is held pivotably by a spherical face end region 6 of its wall between a form-adapted joint socket 7 on the first coupling part 2, on the one hand, and a joint head 8 on a holding element 9 provided in the inner cavity 4 of the second coupling part 5, on the other hand. The holding element 9 passes through a push-through opening 11 of the second coupling part 5 by means of a connecting shaft 10 engaging on the first coupling part 2. The holding element 9 connects the liquid channels of the first coupling part 2 and of the second coupling part 5 to one another.

(9) It can be seen in FIGS. 1, 2 and 4 that the holding element 9 is substantially in the form of a sleeve. The ball joint 1 may have on its second coupling part 5 an outflow-side insertion opening 3, through which an insert cartridge can be inserted into the inner cavity 4 of the second coupling part 5. In the case of the exemplary embodiment represented here, the second coupling part 5 has a thread 12, which can be screwed on the mating thread of an angle valve on the wall side.

(10) It is clear from a comparison of FIGS. 1, 2 and 4 that the second coupling part 5 has, on its inner wall bounding the inner cavity 4, an annular groove, in which is provided an annular seal 13, which provides a seal between the second coupling part 5 and the holding element 9. In this regard, a first annular shoulder 14, which forms the annular groove for the annular seal 13 at a spacing between said annular shoulder and the adjacent face edge 16 of an insert part 15, is provided on the inner wall of the second coupling part 5. In this regard, the insert part 15 can be inserted into the inner cavity 4 of the second coupling part 5 as far as a point at which the insert part 15 bears against a second annular shoulder 17 in the inner cavity 4. The insert part 15 is held, preferably in a frictional engagement and in particular by a press fit, on the inner wall of the second coupling part 5. As is clear from the longitudinal section in FIG. 2, the insert part 15 extends between the second annular shoulder 17 and a third annular shoulder 28, which third annular shoulder 18 is arranged in a plane with the adjacent face edge 19 of the insert part 15. A sealing ring 20 bears against the third annular shoulder 18 and the adjacent face edge 19 of the insert part 15.

(11) As is clear from a comparison of FIGS. 1, 2 and 4, the first coupling part 2 is in the form of a hose connector 21 in its end region, which faces away from the second coupling part 5, onto which hose connector 21 a hose end of a partial region, in the form of a flexible hose line, of the water line can be pushed. While the second coupling part 5 and the first coupling part 2 are preferably produced from metal, by contrast the insert part 15 that is annular or in the form of a sleeve is manufactured from plastic.

(12) As shown in FIG. 4, a sanitary insert cartridge 22 (shown schematically) can be inserted into the inner cavity of the second coupling part 5 from that face opening 3 of the second coupling part 5 which faces away from the first coupling part 2. The sanitary insert cartridge 22 can bear against the face edge 19 of the sealing ring 20 which faces away from the insert part 15.

LIST OF REFERENCE SIGNS

(13) 1 Ball joint

(14) 2 First coupling part

(15) 3 Insertion opening

(16) 4 Inner cavity

(17) 5 Second coupling part

(18) 6 Spherical face end region of the second coupling part (5)

(19) 7 Joint socket

(20) 8 Joint head

(21) 9 Holding element

(22) 10 Connecting shaft

(23) 11 Push-through opening on the second coupling part (5)

(24) 12 Thread on the second coupling part

(25) 13 Annular seal

(26) 14 First annular shoulder

(27) 15 Insert part

(28) 16 Face edge

(29) 17 Second annular shoulder

(30) 18 Third annular shoulder

(31) 19 Face edge

(32) 20 Sealing ring

(33) 21 Hose connector

(34) 22 sanitary insert cartridge