DE102022123996A1 - Socket housing for connecting to a fluid line and system comprising the socket housing - Google Patents

Abstract

The invention relates to a nozzle housing (10) for connecting to a fluid line, comprising a sleeve section (12) with an opening (20) for inserting a nozzle (40) along a longitudinal axis (14) and a wall (16) which extends in the circumferential direction extends around the longitudinal axis (14) and which delimits the opening (20) with an inner surface (18), the inner surface (18) having a recess (22) for the passage of a securing tab (34) of a securing element (20) which can be inserted into the opening (20). 32) for locking a connector (40) inserted through the securing element (32) into the connector housing (10) and a receptacle (24) for receiving at least part of the securing tab (34), the recess (22) extending from an axial Access (26) extends at an edge (28) of the opening (20) in an axial direction and the receptacle (24) is spaced from the edge (28) of the opening (20) in an axial direction, with between the receptacle (24 ) and the recess (22) a locking element (30) for locking the securing tab (34) is arranged in the receptacle (24), characterized in that the receptacle (24) is arranged offset from the recess (22) in a circumferential direction. The invention provides an improved nozzle housing (10), in which a nozzle (40) locked in the nozzle housing (10) can be exposed to increased tensile forces in the axial direction.

Description

The invention relates to a nozzle housing for connecting to a fluid line and a system comprising the nozzle housing.

Devices that have a connector and a connector housing can be used to connect fluid lines. One of the fluid lines to be connected, e.g. B. one pipe is connected to the nozzle and the other, e.g. B. a hose connected to the nozzle housing. The nozzle can be inserted into an opening in the nozzle housing and locked on the nozzle housing via a securing element.

Out of DE102020115021A1 a system with a nozzle housing is known, in which the nozzle is locked on the nozzle housing by a securing element. The securing element has securing tabs which have a channel in the axial direction and an opening adjoining it in the axial direction with a locking edge extending in the circumferential direction. The locking tabs lock into the opening when inserted into the opening.

The object of the invention is to provide an improved nozzle housing in which a nozzle locked in the nozzle housing can be exposed to increased tensile forces in the axial direction.

Main features of the invention are specified in claims 1 and 6. Refinements are the subject of claims 2 to 5 and 7 to 8.

In a nozzle housing for connecting to a fluid line, comprising a sleeve section with an opening for inserting a nozzle along a longitudinal axis and a wall which extends in the circumferential direction around the longitudinal axis and which delimits the opening with an inner surface, the inner surface having a recess for the passage of a Locking tab of a locking element that can be inserted into the opening for locking a socket inserted through the locking element into the socket housing and a receptacle for receiving at least part of the locking bracket, the recess extending from an axial access on an edge of the opening in an axial direction and the Receptacle is spaced from the edge of the opening in an axial direction, with a locking element for locking the securing tab in the receptacle being arranged between the receptacle and the recess, it is provided according to the invention that the receptacle is arranged offset from the recess in a circumferential direction .

The invention provides a socket housing in which the function of inserting the securing tab of the securing element is spatially separated from the function of locking the securing tab in the circumferential direction around the longitudinal axis. The socket housing has the securing element or the socket for insertion. On the inner surface on the wall delimiting the opening, the socket housing comprises a recess through which a securing tab of a securing element can be inserted in the axial direction. Furthermore, a receptacle is arranged offset from the recess in the circumferential direction. In order to place the securing tab inserted into the recess in the receptacle, the securing element with the securing tab must be rotated in the circumferential direction towards the receptacle. Due to the offset of the receptacle in the circumferential direction, the holding of the securing tab in the receptacle in the axial direction is separated from the insertion position in the recess. As a result, the receptacle can be made more stable in the axial direction and a nozzle locked in the nozzle housing can be subjected to an increased tensile force compared to the prior art.

The locking tab on the socket housing is locked using a plug-and-turn movement analogous to a bayonet lock. A locking element is arranged between the recess and the receptacle, with which the securing tab is locked in the recess. The locking by the locking element blocks rotation of the securing tab and thus of the securing element in the circumferential direction from the receptacle to the recess. This rotation is opposite to the rotation with which the locking tab is moved from the recess into the receptacle.

The terms axial direction, radial direction and circumferential direction each refer to the longitudinal axis of the opening.

According to one example, the locking element may have an axially extending locking edge which is spaced from the access in the axial direction.

When the securing tab is pulled in the axial direction, the locking edge is subjected to less stress than an edge of the receptacle running in the circumferential direction.

According to a further example, the receptacle can have a release device for decoupling the securing tab from a socket inserted into the opening.

With the release device, a nozzle secured by a securing element locked in the nozzle housing can be released or unlocked in order to be removed from the securing element and the nozzle housing.

Furthermore, the release device can, for example, have a ramp surface that is beveled radially inwards relative to the axis.

The ramp surfaces can be arranged on a side of the receptacle opposite the recess. The securing tab can then be moved away from the recess over the ramp surface by rotating it. This allows the securing tab to be moved radially outwards using the ramp surface. This causes the locking tab to be decoupled from the nozzle and releases it.

According to a further example, the wall can have a greater radial thickness starting from the receptacle in an axial direction pointing out of the opening than in a radial direction starting from the recess.

Due to the greater radial thickness, the wall can absorb further increased tensile forces in the axial direction, which are transmitted by the securing tab arranged in the receptacle.

The invention further relates to a system for connecting fluid lines, comprising a connector housing according to the preceding description, a securing element that can be inserted into the opening and a connector that can be locked in the connector housing by the securing element, the securing element having at least one securing tab for locking the connector in the opening and the securing tab can be inserted in the axial direction through the access into the recess, the securing tab changing from an initial position to a radially inwardly offset position when inserted into the recess and at least partially in the receptacle by rotating the securing element in the circumferential direction out of the recess is arranged, with the securing element changing into the starting position when rotating into the receptacle.

Advantages and effects as well as further developments of the system result from the advantages and effects and further developments of the nozzle housing described above. In this regard, reference is therefore made to the previous description.

According to one example, the connector housing can have at least one release device for decoupling the securing tab from a connector inserted into the opening, wherein by rotating the securing element towards the ramp surface, the securing tab changes from the starting position to a position offset radially outwards and one in the opening releases the locked connector.

According to a further example, the securing tab can have a locking body which cooperates with the locking element in such a way that rotation of the locking body in the circumferential direction from the receptacle to the recess is locked when the locking body is arranged in the receptacle.

The locking body can rest in the receptacle in the axial direction on a wall section which extends in the circumferential direction. By offsetting the receptacle in the circumferential direction with respect to the recess, the wall section can be made strong enough to withstand increased tensile forces compared to the prior art.

• 1 eine schematische Darstellung des Stutzengehäuses;
• 2a-c eine schematische Darstellung des Stutzengehäuses mit Sicherungselement; und
• 3 eine schematische Darstellung eines Systems aus Stutzen, Sicherungselement und Stutzengehäuse.

Further features, details and advantages of the invention emerge from the wording of the claims and from the following description of exemplary embodiments based on the drawings. Show it:

• 1 a schematic representation of the nozzle housing;
• 2a -c a schematic representation of the nozzle housing with safety element; and
• 3 a schematic representation of a system consisting of a nozzle, a safety element and a nozzle housing.

1 shows a view of the nozzle housing 10 for connecting to a fluid line along a longitudinal axis 14.

The nozzle housing 10 has a sleeve section 12 which has an opening 20. Starting at the opening 20, a fluid channel extends through the nozzle housing 10 and opens at a further opening on the nozzle housing 10. In this example, the longitudinal axis 14 can extend substantially through the center of the opening 20.

Furthermore, the sleeve section 12 has a wall 16 which extends around the opening 20. The wall 16 extends in the circumferential direction around the longitudinal axis 14. An inner surface 18 of the wall 16 delimits the opening 20. An edge 28 of the opening 20 also extends around the opening 20 as the end face of the wall 16.

The inner surface 18 has a recess 22 which begins at an axial access 26 which is arranged at the edge 28 of the opening 20. The recess 22 can extend in the axial direction along the inner surface 18 in the form of a channel open towards the longitudinal axis 14.

The recess 22 is designed such that a securing tab 34 of a securing element 32 can be inserted through the access 26 in the axial direction into the recess 22, as in 2a shown.

Furthermore, the inner surface 18 has a receptacle 24 for at least part of the securing tab 34 which can be inserted through the recess 22. The receptacle 24 is arranged offset in a first circumferential direction next to the recess 22 and spaced from the edge 28 of the opening 20 in the axial direction. For a securing tab 34 inserted into the recess 22, the receptacle 24 can only be reached via the recess 22.

For this purpose, the securing tab 34 can first be used, as in 2a shown, can be inserted into the opening 20 with the securing element 32. The securing tab 32 is first inserted into the recess 22 in the axial direction.

The opening 20 can have a radius at the recess that is smaller than the distance between the securing tab 34 and the longitudinal axis 14. When inserted, the securing tab 32 can therefore be guided through the recess 22 from an initial position into a position offset radially inwards. I.e. The securing tab 32 can be bent elastically towards the longitudinal axis 14 by inserting it into the recess 22.

As soon as the securing tab 34 has been inserted into the recess 22, the securing element 32 can be used as in 2 B shown are rotated in the first circumferential direction about the longitudinal axis 14. The securing tab 34 is moved from the recess 22 into the receptacle 24 and arranged as shown in 2c shown.

At the receptacle 24, the opening 20 can have a larger radius than the distance of the securing tab 34 from the longitudinal axis 14. The securing tab 34 can therefore move in the receptacle 24 from the radially inwardly offset position back into the starting position.

A locking element 30 is arranged between the recess 22 and the receptacle 24. The locking element 30 is designed to lock a securing tab 34 arranged in the receptacle 24. During the rotational movement from the recess 22 into the receptacle 24, the securing tab 34 is moved over the locking element 24.

While passing through the locking element 30, the securing tab 34 can be in the radially inwardly offset position. After passing through the locking element 30, the securing tab 34 in the receptacle 24 can be moved back into the starting position and is then locked in the receptacle 24 by the locking element 30. The locking element 30 blocks a movement of the securing tab 34 locked in the receptacle 24 towards the recess 22. That is, the locking element 30 locks the securing tab 34 in a second circumferential direction that is opposite to the first circumferential direction.

The locking element 30 can be designed as a locking edge. The locking edge can extend in the axial direction between the recess 22 and the receptacle 24. A securing body 36, which protrudes radially from the securing tab 34, can cooperate with the locking edge to effect the locking when the securing body 36 and thus the securing tab 32 is arranged in the receptacle 24.

In the axial direction out of the opening 20, the securing tab 34, which is locked in the receptacle, is held in a form-fitting manner by a first wall section 27. The first wall section 27 has a thickness in the radial direction which is greater than a thickness of a second wall section 29 which delimits the recess 22 in the radial direction. The thickness of the two wall sections 27, 29 is measured between the boundary surfaces of the wall 16 at the respective position.

In the prior art, in which the receptacle 24 follows the recess 22 in the axial direction, the receptacle 24 is limited by the second wall section 29 in the radial direction out of the opening. Due to the greater thickness of the first wall section 27 according to the invention, the first wall section 26 can withstand increased tensile forces in the axial direction, which are transmitted via a securing tab 34 received by the receptacle 24.

Particularly with small dimensions, the thickness of the first wall section 3 27 can be made larger than in the prior art by separating the receptacle 24 in the circumferential direction from the recess 22 in order to withstand comparatively large tensile forces despite the small dimensions of the nozzle housing 10.

The securing tab 34 can have a first locking element 38 on an outer surface facing the longitudinal axis 24, as in 3 shown is. The first locking element 38 can cooperate with a second locking element 42, which is arranged on a socket 40. The nozzle 40 can be inserted into the opening 20 of the nozzle housing 10 through the securing element 32. As soon as the nozzle 40 has reached its intended position in the nozzle housing 10, the first and second locking elements 38, 42 lock and secure the nozzle 40 in the nozzle housing 10. The securing tab 34 is then coupled to the nozzle 40. Furthermore, a seal 44 can be arranged between the nozzle 40 and the nozzle housing 10.

In order to remove the nozzle 40 from the nozzle housing 10, the receptacle 24 can have a release device 25 which is designed to decouple the securing tab 34 from the nozzle 40. For this purpose, the release device 25 can have a radially inwardly sloping ramp surface which is arranged on the receptacle 24. The receptacle 24 is arranged in the circumferential direction between the release device 25 and the recess 22.

By rotating the securing element 32 in the first circumferential direction, i.e. H. away from the recess 22, the securing tab 34 is moved to the ramp surface. The edge of the ramp surface bordering the receptacle 24 is arranged closer to the longitudinal axis 14 than the side of the securing tab 34 facing the longitudinal axis 14.

Therefore, as the locking tab 34 is moved further in the first circumferential direction, the locking tab 34 moves over the ramp surface and is moved to a radially outwardly offset position. As a result, the first latching element 38 is moved radially outwards from the second latching element 42, so that the securing tab 34 is decoupled from the connecting piece 40.

The nozzle 40 is thereby released and can then be removed from the opening 20.

The invention is not limited to one of the previously described embodiments, but can be modified in many ways.

All features and advantages arising from the claims, the description and the drawing, including constructive details, spatial arrangements and process steps, can be essential to the invention both individually and in a wide variety of combinations.

Reference symbol list

10

Nozzle housing

12

sleeve section

14

Longitudinal axis

16

Wall

18

Inner surface

20

opening

22

recess

24

Recording

25

Release facility

26

Access

27

Wall section

28

edge

29

Wall section

30

Locking element

32

Security element

34

Locking tab

36

locking body

38

Snap element

40

Support

42

Locking element

44

poetry

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was 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 102020115021 A1 [0003]

Claims (8)

Socket housing for connecting to a fluid line, comprising a sleeve section (12) with an opening (20) for inserting a socket (40) along a longitudinal axis (14) and a wall (16) which extends in the circumferential direction around the longitudinal axis (14). and which delimits the opening (20) with an inner surface (18), the inner surface (18) having a recess (22) for passing through a securing tab (34) of a securing element (32) which can be inserted into the opening (20) for locking a through the Securing element (32) inserted into the socket housing (10) (40) and a receptacle (24) for receiving at least part of the securing tab (34), the recess (22) extending from an axial access (26) at one edge (28) of the opening (20) extends in an axial direction and the receptacle (24) is spaced from the edge (28) of the opening (20) in an axial direction, with between the receptacle (24) and the recess (22) a locking element (30) for locking the securing tab (34) is arranged in the receptacle (24), characterized in that the receptacle (24) is arranged offset from the recess (22) in a circumferential direction. Nozzle housing Claim 1 , characterized in that the locking element (30) has a locking edge which extends in the axial direction and is spaced from the access (26) in the axial direction. Nozzle housing Claim 1 or 2 , characterized in that the receptacle (24) has a release device (25) for decoupling the securing tab (34) from a socket (40) inserted into the opening (20). Nozzle housing Claim 3 , characterized in that the release device (25) has a ramp surface which is beveled radially inwards relative to the longitudinal axis (14). Socket housing according to one of the preceding claims, characterized in that the wall (16) has a greater radial thickness starting from the receptacle (24) in an axial direction pointing out of the opening (20) than starting from the recess (22) in a radial direction having. System for connecting fluid lines, comprising a connector housing (10) according to one of the preceding claims, a securing element (32) which can be inserted into the opening (20) and a connector (40) which can be locked by the securing element (32) in the connector housing (10), wherein the securing element (32) has at least one securing tab (34) for locking the connector (40) in the opening (20) and the securing tab (34) can be inserted into the recess (22) in the axial direction through the access (26), wherein the securing tab (34) changes when inserted into the recess (22) from a starting position to a position offset radially inwards and by rotating the securing element (32) in the circumferential direction out of the recess (22) at least partially in the receptacle (24). is arranged, the securing element (32) changing into the starting position when rotating into the receptacle (24). System after Claim 6 , characterized in that the nozzle housing (10) at least after Claim 3 is further developed, wherein by rotating the securing element (32) towards the ramp surface, the securing tab (34) changes from the starting position to a position offset radially outwards and releases a socket (40) locked in the opening (20). System after Claim 6 or 7 , characterized in that the securing tab (34) has a locking body (36) which interacts with the locking element (30) in such a way that rotation of the locking body (36) in the circumferential direction from the receptacle (24) to the recess (22) is locked when the locking body (36) is arranged in the receptacle (24).

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