DE102017112829A1 - A connecting arrangement - Google Patents

Abstract

The invention relates to a connector arrangement (15) having a fluid line end (11) which is held in a housing recess (12) by means of a connector (14). To provide a connector arrangement which can be produced at low cost and / or under high temperatures and / or or high fluid pressure, in the automotive field meets normal sealing requirements, the connector (14) comprises a first connector body, which surrounds the fluid line end (11) in a first longitudinal section, and a second connector body, which surrounds the fluid line end (11) in a second longitudinal section.

Description

The invention relates to a connector assembly with a fluid line end, which is held by means of a connector in a housing recess. The invention further relates to a clutch slave cylinder with such a connector assembly.

From the German patent application DE 10 2014 216 045 A1 a hydraulic coupling system is known, comprising a connector having a first connection region and a second connection region and further comprising a first conduit for guiding hydraulic fluid, which is materially connected to the first connection region, in particular welded, and comprising a second conduit for guiding Hydraulic fluid which is positively connected to the second connection region, in particular crimped, is. From the German patent application DE 10 2014 217 651 A1 a connecting element for connecting a hydraulic line to an actuating element of a clutch is known, comprising a one-piece base body having a longitudinal axis and two end faces, wherein the base body is attachable to the hydraulic line, wherein at least one of the two end faces an inner seal and an outer seal are arranged and the inner seal and the outer seal are secured with a captive on both sides parallel to the longitudinal axis of the body to the body.

The object of the invention is to provide a connector assembly with a fluid line end, which is held by means of a connector in a housing recess, which is inexpensive to produce and, especially under high temperatures and / or high fluid pressure, meets in the automotive field usual tightness requirements.

The object is achieved in a connector assembly having a fluid line end, which is held by means of a connector in a housing recess, characterized in that the connector comprises a first connector body, which surrounds the fluid line end in a first longitudinal section, and a second connector body, the fluid line end in engages around a second longitudinal section. The fluid line is preferably used for supplying a fluid, in particular a hydraulic medium. With the supplied fluid, an actuator can be activated, for example, a clutch actuator are acted upon by an actuating pressure. Through the connector with the two connector bodies, a stable line connection to a housing of a fluidic actuating device, in particular to a clutch slave cylinder, is made possible in a simple manner.

A preferred exemplary embodiment of the connector arrangement is characterized in that a high-pressure seal is arranged on an end of the first connector body facing away from the second connector body. The high-pressure seal is designed, for example, as an O-ring and advantageously serves to seal the fluid line end in the housing recess with respect to a high-pressure chamber. As a high-pressure chamber, a pressure chamber is referred to, which is acted upon by a relatively high pressure, for example with an actuating pressure for a clutch. The high pressure seal surrounds the fluid line end radially outward. The high-pressure seal performing O-ring is advantageously arranged in an annular space which is bounded radially inwardly from the fluid line end and radially outside of the housing recess. In the axial direction of the annular space is advantageously limited by the second connector body remote from the end of the first connector body and a shoulder in the housing recess.

A further preferred embodiment of the connector arrangement is characterized in that the first connector body has a collar at its end facing the second connector body. With the collar is a simple way a particularly stable, especially non-tilting, connection of the fluid line allows.

A further preferred exemplary embodiment of the connector arrangement is characterized in that a low-pressure seal is arranged between the two connector bodies, wherein the first connector body constitutes a spacer between the low-pressure seal and the high-pressure seal. The low-pressure seal is advantageously also designed as an O-ring. The low-pressure seal is advantageously used to seal the fluid line end against a low-pressure space. The low-pressure space is, for example, a wet space, such as a cooling oil space, which is subjected to a relatively low pressure. The arrangement of the low pressure seal between the two connector bodies, the positioning of the low pressure seal manufacturing technology is considerably simplified. The low-pressure seal is preferably arranged in an annular space which is bounded radially inward by the fluid line end and radially outward by the housing recess. In the axial direction of the annulus is advantageously limited by the two connector bodies. The arranged between the two seals first connector body advantageously represents a spacer for the seals in the axial direction.

A further preferred embodiment of the connector assembly is characterized in that the two connector bodies are arranged in an annular space which is bounded radially outwardly in a first axial portion of an insert body which is arranged in a carrier, the radially outer ring in a second axial Limited section. The annulus is bounded radially inward by the fluid conduit end. Radially outward, the annular space which serves to receive the two connector bodies is delimited by the carrier and the insert body. The carrier is by design formed of a different material than the insert body. The carrier is formed of a steel material, for example. The insert body is formed for example of a plastic material or of an aluminum material.

A further preferred embodiment of the connector assembly is characterized in that at the fluid line end radially outwardly a circumferential projection is formed, which is positively surrounded in the insert body of the first connector body or in the carrier of the second connector body. The projection which runs around radially on the outside of the fluid line end is designed, for example, as a bulge or bead, which, viewed in section, essentially has the shape of a circular arc. The circumferential projection, viewed from the outside, forms an annular bead on the fluid line end. The positive connection between the fluid line end and the first connector body makes it possible to axially secure the fluid line end in the first connector body in a simple manner.

A further preferred exemplary embodiment of the connector arrangement is characterized in that the first connector body extends from the insert body into the carrier in which the second connector body is arranged. The first connector body advantageously limits, with its end facing away from the second connector body, in the insert body the annular space which serves to receive the high-pressure seal. In the area of the collar, the first connector body advantageously has a larger outer diameter. With the larger outer diameter on the collar, the first connector body is disposed in the carrier.

A further preferred embodiment of the connector arrangement is characterized in that the annular space in the carrier has a larger outer diameter than in the insert body. The arrangement of the collar of the first connector body in the region of the carrier with the larger outer diameter prevents tilting of the fluid line in the housing recess in a simple manner.

A further preferred embodiment of the connector assembly is characterized in that the fluid line end in the first axial portion of the annulus to the second axial portion has a diameter extension which is arranged in the axial direction overlapping to a diameter extension in the insert body, wherein the shape of the first connector body to the two diameter extensions is adjusted. Thus, the first connector body between the seated on different pipe diameters sealing elements is a spacer, which advantageously counteracts a possible gap extrusion of the seals.

A further preferred exemplary embodiment of the connector arrangement is characterized in that one or the circumferential projection of the fluid line end in the second axial section of the annular space is surrounded by the second connector body. The second connector body can be designed as a two-part spacer. The second connector body, which also surrounds the circumferential projection, which is also referred to as a bead, at the fluid line end advantageously prevents a gap extrusion of the low-pressure seal. To secure the seal assembly with the connector assembly via a stapling device, which is also referred to as a clip, secured to the housing.

The above object is alternatively or additionally solved by a clutch slave cylinder with a carrier, in which an insert body is arranged, with a previously described connector assembly. The clutch slave cylinder is preferably used to actuate a clutch in a hybrid powertrain of a motor vehicle. The clutch slave cylinder is advantageously attached to the carrier, which is particularly stable, in particular made of steel, attached to a housing, preferably a coupling housing. The attachment of the carrier to the housing takes place for example by means of screws which are screwed into corresponding threaded recesses of the carrier. The insert body is advantageously bolted to the carrier and formed of an aluminum material or of a plastic material. As a result, the production of the insert body is simplified in large numbers. The multi-part fluid line connection enables a stable connection of the fluid line end to the two-part housing of the clutch slave cylinder with the carrier and the insert body in a simple manner. The clutch slave cylinder, also referred to as a slave cylinder for short, is preferably a concentric slave cylinder having a central through-hole for passing a shaft, for example a transmission shaft. Such a concentric slave cylinder is also referred to as CSC, wherein the Capital letters CSC stand for the English terms Concentric Slave Cylinder. In the slave cylinder, an annular piston is received to and fro movable, which limits a pressure chamber in the slave cylinder. Via the fluid line end, pressurized fluid, in particular hydraulic medium, enters the pressure chamber of the slave cylinder in order to apply an actuating pressure to the annular piston. By the annular piston, the clutch, in particular the separating clutch, preferably with the interposition of an actuating bearing, actuated.

The invention further relates to a connector, in particular a connector body, for a previously described connector arrangement. The connector, especially the connector body, can be traded separately.

• 1 einen Kupplungsnehmerzylinder mit einem Fluidleitungsende, das mit Hilfe eines Konnektors in einer Gehäuseausnehmung gehalten ist, im Längsschnitt;
• 2 eine perspektivische Darstellung des Fluidleitungsendes von außen mit einer Klammereinrichtung;
• 3 einen vergrößerten Halbschnitt aus 1;
• 4 eine ähnliche Darstellung wie in 3 gemäß einem weiteren Ausführungsbeispiel;
• 5 eine perspektivische Darstellung eines Fluidleitungsendes des in 4 dargestellten Ausführungsbeispiels; und
• 6 eine ähnliche Darstellung wie in 2 mit einer Klammereinrichtung zur Sicherung des Fluidleitungsendes an einem Gehäusekörper.

Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, various embodiments are described in detail. Show it:

• 1 a clutch slave cylinder having a fluid line end which is held by means of a connector in a housing recess, in longitudinal section;
• 2 a perspective view of the fluid line end from the outside with a clamping device;
• 3 an enlarged half-section 1 ;
• 4 a similar representation as in 3 according to a further embodiment;
• 5 a perspective view of a fluid line end of in 4 illustrated embodiment; and
• 6 a similar representation as in 2 with a clamping device for securing the fluid line end to a housing body.

In 1 ; 4 is a clutch slave cylinder 1 ; 51 with a carrier 2 ; 52 and an insert body 3 ; 53 shown in longitudinal section. The carrier 2 ; 52 poses with the insert body 3 ; 53 a housing 4 ; 54 the clutch slave cylinder 1 ; 51 represents.

The carrier 2 ; 52 comprises a tubular body having a central through hole 5 (in 4 not shown). The central through hole 5 serves to perform a (not shown) gear shaft. From the main body, the carrier extends 2 ; 52 flange radially outward, where the carrier 2 ; 52 merges into a ring-like closing body.

The insert body 3 ; 53 is in 1 ; 4 from the right to the carrier 2 ; 52 grown and includes a ring-like cylinder space 6 ; 56 in which a slave piston 7 ; 57 the clutch slave cylinder 1 ; 51 moved back and forth, so in 1 ; 4 in the horizontal direction, is guided. At his in 1 ; 4 left end, the slave piston 7 ; 57 , which is designed as an annular piston, a groove seal 8th ; 58 on. The groove seal 8th ; 58 serves to the annular cylinder space 6 ; 56 to the slave piston 7 ; 57 seal off.

The carrier 2 ; 52 has in the closing body radially outside an annular groove 9 ; 59 on. In the ring groove 9 ; 59 is a seal 10 ; 60 arranged, which is designed as an O-ring. The seal 10 ; 60 used in the installed state of the clutch slave cylinder 1 ; 51 for sealing between a wet room and a drying room. The wet room is in 1 ; 4 to the right of the seal 10 ; 60 arranged.

A fluid line 13 ; 63 , in the 1 ; 4 is shown cut off, extends through the drying room, in 1 ; 4 left of the seal 10 ; 60 is arranged. A fluid line end 11 ; 61 the fluid line 13 ; 63 is in a housing recess 12 ; 62 of the housing 4 ; 54 the clutch slave cylinder 1 ; 51 added. For stable connection of the fluid line end 11 ; 61 in the housing recess 12 ; 62 serves a connector 14 ; 64 a connector assembly 15 ; 65 , Through the connector 14 ; 64 becomes the fluid line end 11 ; 61 also pressure-tight in the housing recess 12 ; 62 held.

The clutch slave cylinder 1 ; 51 serves in a fluidic clutch actuation system (not shown) for actuating a disconnect clutch, which in a hybrid application is also referred to as a K0 clutch. As a result, the slave cylinder 1 ; 51 Also referred to as K0-slave cylinder.

The slave cylinder 1 ; 51 is arranged in the installed state between a motor and the separating clutch. The insert body 3 ; 53 becomes for example on the carrier 2 ; 52 screwed, which in turn is attached to a housing, in particular a coupling housing, for example an intermediate wall of the coupling housing.

An actuating movement of the slave piston 7 ; 57 is via an actuation bearing 16 ; 66 transferred to the (not shown) coupling. The actuation bearing 16 ; 66 is designed as a rolling bearing and is also referred to as a release bearing.

The actuation bearing 16 ; 66 includes a bearing outer ring 17 ; 67 and a bearing inner ring 19 , Between the bearing inner ring 19 and the bearing outer ring 17 ; 67 ; are rolling elements 18 arranged in a cage. At the rolling elements 18 is it? for example, balls. In 4 is only the bearing outer ring 67 of the actuating bearing 66 shown.

In 2 ; 6 you can see that the case 4 ; 54 on the carrier 2 ; 52 radially outside a substantially cuboid housing body 20 ; 70 having. In the housing body 20 ; 70 begins the housing recess ( 12 in 1 and 62 in 4 ), in which the fluid line end ( 11 in 1 and 61 in 4 ) of the fluid line 13 ; 63 is included. The connector ( 14 in 1 and 64 in 4 ) is by means of a stapler 22 ; 72 on the housing body 20 ; 70 of the housing 4 ; 54 held. The clamp device 22 ; 72 can also be referred to as a clip.

The clamp device 22 ; 72 includes two legs, of which in the perspective of 2 ; 6 only the front leg 21 ; 71 is visible. The thigh 21 ; 71 goes from a base 23 ; 73 the stapling device 22 ; 72 out. The clamp device 22 ; 72 is for example designed as a sheet metal part and includes a through hole in the base 23 ; 73 , for carrying out the fluid line 13 ; 63 serves. The thigh 71 the stapling device 72 in 6 includes a through hole 74 , which is a locking receptacle for a locking projection 75 on the housing body 70 represents.

In 3 is a half cut out 1 with the connector arrangement 15 shown enlarged. The half cut will be in 3 down from a rotation axis 30 limited. The rotation axis 30 belongs, for example, to a wave that is in the recess 5 of the carrier 2 is rotatably arranged. The central through hole 5 is shown in the illustrated half section smaller than it is real, as compared with 1 sees.

The connector 14 includes a first connector body 31 and a second connector body 32 , The first connector body 31 indicates at its the second connector body 32 facing the end of a covenant 33 on. The first connector body 31 engages positively a radially outwardly extending projection 34 the fluid line end 11 , Due to the positive connection, the fluid line end 11 in the axial direction in the first connector body 31 fixed. The term axial here refers to the longitudinal axis of the fluid line end 11 ,

Through the two connector bodies 31 . 32 becomes a centering length for the fluid line end 11 in the housing recess 12 divided into two components. This can advantageously be saved radial space. In addition, the arrangement and positioning of a high pressure seal 35 and a low pressure seal 36 in the housing recess 12 through the two connector bodies 31 . 32 allows.

The high pressure seal 35 is designed as an O-ring and on the second connector body 32 opposite end of the first connector body 31 in the housing recess 12 arranged. The high pressure seal 35 is close to the fluid line end 11 at.

The first connector body 31 is with his the high pressure seal 35 facing end in the insert body 3 added. With the federal government 33 protrudes the first connector body 31 from the insert body 3 out. The Bund 33 of the first connector body 31 is in the carrier 2 arranged.

The housing recess 12 represents radially outside the fluid line end 11 an annulus 40 dar. The annulus 40 is in a first axial section 41 from the insert body 3 limited. In a second axial section 42 becomes the annulus 40 from the carrier 2 limited. In the second axial section 42 the annular space has a larger outer diameter than in the first axial section 41 ,

The Bund 33 of the first connector body 31 and the second connector body 32 are in the second axial section 42 of the annulus 40 arranged with the larger outer diameter. The low pressure seal 36 is in the axial direction between the collar 33 of the first connector body 31 and the second connector body 32 arranged. The low pressure seal 36 serves advantageously to fluid that between the insert body 3 and the carrier 2 could seal itself off to the outside.

The in 4 illustrated connector 64 includes a first connector body 81 and a second connector body 82 , The first connector body 81 includes how to get in 4 sees, a diameter extension 100 ,

The second connector body 82 engages positively a radially outwardly extending projection 84 the fluid line end 61 , The circumferential projection 84 at the fluid line end 61 is also referred to as a bead. By the positive connection between the second connector 82 and the circumferential projection 84 becomes the fluid line end 61 in the axial direction in the second connector body 82 fixed. The term axial here refers to the longitudinal axis of the fluid line end 61 ,

A high pressure seal 85 is in an annulus 90 between the two connector bodies 81 and 82 arranged. The high pressure seal 85 is designed as an O-ring.

The annulus 90 includes a first axial portion 91 in the insert body 53 , The the annulus 90 in the first axial section 91 radially outer limiting insert body 53 has radially outward and in the axial direction overlapping to the diameter extension 100 of the first connector body 81 a diameter extension 102 on.

In 5 you can see that at the fluid line end 61 also a diameter extension 101 is provided. The diameter extension 101 connects an end section 111 the fluid line end 61 integral with an intermediate section 112 , In the end section 111 has the fluid line end 61 a smaller diameter than in the intermediate section 112 ,

In 4 you can see that the diameter extensions 100 . 101 . 102 are arranged overlapping each other in the axial direction. The first connector body 81 is through the diameter extensions 100 . 101 . 102 in the axial direction securely in the first axial section 91 of the annulus 90 positioned.

The high pressure seal 85 is in a second axial section 92 of the annulus 90 arranged. In the axial direction is the high pressure seal 85 between the two connector bodies 81 and 82 arranged.

LIST OF REFERENCE NUMBERS

1

Clutch slave cylinder

2

carrier

3

insert body

4

casing

5

central through hole

6

ring-like cylinder space

7

slave piston

8th

Nutdichtring

9

ring groove

10

poetry

11

Fluid line end

12

housing recess

13

fluid line

14

connector

15

A connecting arrangement

16

operation seat

17

Bearing outer ring

18

rolling elements

19

Bearing inner ring

20

housing body

21

leg

22

clincher

23

Base

30

axis of rotation

31

first connector body

32

second connector body

33

Federation

34

head Start

35

High pressure seal

36

Low pressure seal

40

annulus

41

first axial section

42

second axial section

51

Clutch slave cylinder

52

carrier

53

insert body

54

casing

56

ring-like cylinder space

57

slave piston

58

Nutdichtring

59

ring groove

60

poetry

61

Fluid line end

62

housing recess

63

fluid line

64

connector

615

A connecting arrangement

66

operation seat

67

Bearing outer ring

70

housing body

71

leg

72

clincher

73

Base

74

Through Hole

75

catch projection

81

first connector body

82

second connector body

84

Projection, bead

85

High pressure seal

86

Low pressure seal

90

annulus

91

first axial section

92

second axial section

100

Diameter extension

101

Diameter extension

102

Diameter extension

111

end

112

intermediate section

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102014216045 A1 [0002]
• DE 102014217651 A1 [0002]

Claims (10)

A connector assembly (15; 65) having a fluid conduit end (11; 61) held in a housing recess (12; 62) by a connector (14; 64), characterized in that the connector (14; 64) comprises a first connector body (31; 81), which surrounds the fluid line end (11:61) in a first longitudinal section, and a second connector body (32; 82), which surrounds the fluid line end (11; 61) in a second longitudinal section. Connector arrangement according to Claim 1 , characterized in that a high-pressure seal (35; 85) is arranged on an end of the first connector body (31; 81) facing away from the second connector body (32; Connector assembly according to one of the preceding claims, characterized in that the first connector body (31) at its the second connector body (32) facing the end of a collar (33). Connector assembly according to one of the preceding claims, characterized in that a low-pressure seal (36, 86) is arranged between the two connector bodies (31, 32; 81, 82), wherein the first connector body (31, 81) forms a spacer between the low-pressure seal (36 86) and one or the high pressure seal (35; 85) represents. Connector assembly according to one of the preceding claims, characterized in that the two connector bodies (31, 32; 81, 82) are arranged in an annular space (40, 90) which is radially outward in a first axial section (41, 91) of an insert body (3; 53) disposed in a support (2; 52) defining the annulus (40; 90) radially outward in a second axial section (42; 92). Connector arrangement according to Claim 5 , Characterized in that on the fluid line end (11; 61) outside a peripheral projection (34; 84) radially formed in said insert body (3; 53) form-fitting of the first connector body (31) or in the support (52) surrounded by the second connector body (82). Connector arrangement according to Claim 5 or 6 , characterized in that the first connector body (31) extends from the insert body (3) into the carrier (2), in which the second connector body (32) is arranged. Connector assembly according to one of Claims 5 to 7 , characterized in that the annular space (40) in the carrier (2) has a larger outer diameter than in the insert body (3). Connector arrangement according to Claim 5 or 6 characterized in that the fluid conduit end (61) in the first axial portion (91) of the annulus (90) toward the second axial portion (92) has a diameter extension (101) axially overlapping a diameter extension (102) in FIG the insert body (53) is arranged, wherein the shape of the first connector body (81) is adapted to the two diameter extensions (101,102). Connector arrangement according to Claim 9 , characterized in that one or the circumferential projection (84) of the fluid line end (61) in the second axial section (92) of the annular space (90) is surrounded by the second connector body (82).

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