Plug connector for fluidically connecting a fluid-carrying component to a fluid line

Abstract

The invention relates to a plug connector (1) for fluidically connecting a fluid-carrying component (2) to a fluid line (3), comprising a connecting sleeve (4), which has a connecting portion (5) and a coupling portion (7), a clamping sleeve (8) for clamping the fluid line (3), and an arresting sleeve (9) for arresting the clamping sleeve (8) on the coupling portion (7), wherein: the coupling portion (7) has a receiving space (AR) for the arresting sleeve (9) and multiple retaining windows (10) are provided on the inner circumferential surface of the receiving space; the arresting sleeve (9) has multiple retaining tabs (11) which can be latched into the retaining windows (10); the clamping sleeve (8) has multiple flexible clamping fingers (12), which have thickened free ends (15), and a closed annular portion (13); on an inner side of the arresting sleeve (9) there is an arresting projection (14) which interacts with arresting end faces (16) of the thickened free ends (15); the arresting sleeve (9) comprises a sleeve portion (17); the retaining tabs (11) have a first tab end (11a), which is connected to the sleeve portion (17) in the region of a first arresting-sleeve end (9a), and a free second tab end (11b), which is radially spaced from an outer circumferential surface of the sleeve portion (17) and extends obliquely outward in the direction of an opposite, second arresting-sleeve end (9b); and the arresting projection (14) is located on an inner circumferential surface of the sleeve portion (17) and comprises a circumferential collar which is closed in the circumferential direction and comprises an oblique insertion surface (18) facing toward the second arresting-sleeve end (9b).

Description

[0001] PLUG CONNECTOR FOR FLOW-TECHNICALLY CONNECTING A FLUID-COVERING COMPONENT TO A FLUID PIPE

[0002] The invention relates to a connector for fluid-technical connection of a fluid-carrying component to a fluid line, comprising a connecting sleeve with a first connecting sleeve end having a connecting section for connection with a compatible receiving section of the fluid-carrying component and with an opposing second connecting sleeve end having a coupling section for coupling the fluid line, a clamping sleeve for clamping the fluid line and a locking sleeve for locking the clamping sleeve to the coupling section, wherein the coupling section has a receiving space for the locking sleeve, on the inner circumferential surface of which several circumferentially spaced retaining windows are provided, wherein the locking sleeve has several circumferentially spaced, flexible retaining tabs on its outer surface which are designed to snap into the retaining windows of the coupling section.wherein the clamping sleeve has several flexible clamping fingers with thickened free ends spaced apart from each other in the direction of travel at a first clamping sleeve end facing the first connecting sleeve end, and has a closed annular section at the opposite second clamping sleeve end, wherein a locking projection is arranged on an inner side of the locking sleeve, which is designed to cooperate with locking surfaces of the thickened free ends of the clamping fingers facing the second clamping sleeve end to lock the clamping sleeve.

[0003] A connector of this type is disclosed, for example, in EP 3 740 711 B1. The connector comprises a connecting sleeve, a locking sleeve, and a clamping sleeve.

[0004] The object of the present invention was to provide a generic connector that enables improved retention of the fluid line as well as easier handling.

[0005] This problem is solved with the aforementioned connector by the fact that the locking sleeve comprises a circumferentially closed, substantially cylindrical sleeve section, wherein the retaining tabs each have a first tab end which is connected to the sleeve section in the area of ​​a first locking sleeve end facing the first connecting sleeve end, and have a free second tab end which is spaced radially from an outer circumferential surface of the sleeve section and extends obliquely outwards in the direction of an opposite second locking sleeve end, and that the locking projection is arranged on an inner circumferential surface of the sleeve section and comprises a circumferentially closed circumferential collar which includes an oblique insertion surface facing the second locking sleeve end.Due to its closed design, the locking sleeve exhibits greater rigidity, thus providing improved support for the clamping sleeve and consequently the fluid line during operation, especially when the fluid line is moved. The angled insertion surface of the circumferential collar facilitates easier coupling, as the locking sleeve can be pre-assembled on the connecting sleeve before the clamping sleeve and fluid line are connected.

[0006] Optionally, the connecting section of the connecting sleeve could be designed identically to the coupling section, and an identical second locking sleeve and a identical second clamping sleeve could be provided. In this case, the connector would be suitable for coupling two fluid lines. "Identical" in this context means identical structural design, i.e., identical function. However, "identical" does not necessarily mean that the dimensions are identical. For example, the receiving space of one coupling section could have a larger diameter than the receiving space of the other coupling section. Similarly, the corresponding locking sleeve and clamping sleeve could each have a larger diameter than the other locking sleeve and clamping sleeve.In this case, for example, two fluid lines with different diameters could be coupled using the connector.

[0007] The retaining tabs are preferably each bounded by a first retaining surface in the direction of the second locking sleeve end, and the retaining windows are preferably each bounded by a second retaining end surface in the direction of the second connecting sleeve end, wherein the first retaining surfaces bear against the second retaining surfaces of the retaining windows when the retaining tabs are engaged. This reliably secures the locking sleeve against unwanted loosening.

[0008] It is advantageous if, for coupling the fluid line to the connecting sleeve, the locking sleeve can first be positioned on the coupling section until the retaining tabs engage in the retaining windows, and the clamping sleeve can then be positioned on an end section of the fluid line. Afterward, the fluid line, together with the clamping sleeve, can be inserted into the locking sleeve so that the clamping fingers can be radially compressed by the insertion surface and the locking projection engages with the locking end faces of the thickened free ends of the clamping fingers. This allows for very simple assembly.

[0009] The receiving chamber of the coupling section is preferably cylindrical, and the locking sleeve preferably has a cylindrical guide section, particularly with a closed outer guide surface, for guiding the locking sleeve within the receiving chamber. This guide section limits the locking sleeve towards its first end and has a larger diameter than the sleeve section itself. It is particularly advantageous if the diameter of the cylindrical guide section substantially corresponds to the diameter of the receiving chamber. This allows the locking sleeve to be guided with minimal radial play after insertion into the connecting sleeve, thus improving its holding power during operation.

[0010] Preferably, the first tab ends of the retaining tabs are attached to an end face of the guide section facing the second locking sleeve end. This allows for easy insertion of the locking sleeve into the receiving space and reliable guidance by the guide section before the retaining tabs engage.

[0011] It is advantageous if several elongated guide ribs, integrally formed with the sleeve section, are provided on the outer circumferential surface of the sleeve section. These ribs, viewed circumferentially, are each located between two adjacent retaining tabs, with a first end of each guide rib being connected to the cylindrical guide section and a second, opposite end being free. The outer circumferential surfaces of the guide ribs and the outer circumferential surface of the guide section form a common guide surface. This further improves the guidance of the locking sleeve and results in improved retention during operation.

[0012] Preferably, the thickness of the retaining tabs in the radial direction corresponds to the height of the guide section and / or the guide webs.

[0013] Preferably, a number of the clamping fingers, preferably all of them, each have a clamping profile on their inner surfaces, which is designed to interact with an outer circumferential surface of the fluid line to hold the fluid line. The clamping profile preferably has a number of teeth and / or a number of ribs and / or a number of pointed projections. This improves the retention of the fluid line on the clamping sleeve. In particular, the clamping profile can elastically or plastically deform the surface of the fluid line, thereby essentially securing the fluid line by positive locking.

[0014] Preferably, the clamping sleeve is a single piece, with the clamping profiles being integrally formed with the number of clamping fingers. This simplifies manufacturing, as separate metallic teeth inserted into the clamping fingers are no longer required, as in the prior art. Furthermore, the clamping profile can be flexibly adapted to different fluid lines, thereby improving the hold and reducing the risk of damage. While the metallic teeth in the prior art are relatively sharp-edged due to their design, the clamping profile according to the invention can, for example, be adapted to the properties of the fluid line. This results in less damage to the surface of the fluid line, particularly scratching. For example, the clamping profile could have no or fewer sharp edges or points if the fluid line is made of a relatively soft material, especially plastic.However, with a relatively hard material, especially plastic, the clamping profile could have sharper edges and / or points.

[0015] The clamping sleeve is preferably made of a metallic material, and is particularly preferably a turned part. This simplifies manufacturing compared to the prior art. While the prior art uses a relatively complex plastic part, such as an injection-molded part, a turned metallic part can be produced cost-effectively even in small quantities. Furthermore, design modifications to the clamping sleeve are easier than with an injection-molded part, which would always require changes to the injection mold.

[0016] To better understand the invention, it is explained in more detail with reference to the following figures.

[0017] Figure 1 shows a highly simplified, schematic representation of a perspective exploded view of a connector of an exemplary embodiment of the invention with a fluid-carrying component and a fluid line;

[0018] Fig. 2 shows a longitudinal section through the connector in the assembled state;

[0019] Fig. 3a-3d shows different states during the use of the connector for coupling the fluid line.

[0020] It should be noted at the outset that in the differently described embodiments, identical parts are provided with the same reference numerals or component designations, and the disclosures contained in the entire description can be applied analogously to identical parts with the same reference numerals or component designations. Furthermore, the positional designations chosen in the description, such as top, bottom, side, etc., refer to the figure directly described and illustrated, and these positional designations must be applied analogously to the new position if the position changes.

[0021] Reference is made alternately to Fig. 1 and Fig. 2 below. Fig. 1 shows a connector 1 of an exemplary embodiment of the invention in a perspective exploded view. Fig. 2 shows the connector in a longitudinal section in the assembled state.

[0022] The connector 1 is designed for fluid-flow connection of a fluid-carrying component 2 to a fluid line 3. The component 2 and the fluid line are not part of the invention and are shown in Fig. 1 only as examples. Here, the component 2 is, by way of example, a quick-connect coupling, which in turn can be connected to a fluid line (not shown), e.g., a pipe. However, the component 2 could also be designed differently. The fluid line 3 could, for example, be a flexible hose or a rigid pipe. The fluid line 3 is preferably made of plastic.

[0023] The connector 1 comprises a connecting sleeve 4 with a first connecting sleeve end 4a and an opposing second connecting sleeve end 4b. The connecting sleeve 4 can be made of a metallic material or a suitable plastic. A connecting section 5 for connection to a compatible receiving section 6 of the fluid-carrying component 2 is provided at the first connecting sleeve end 4a. A coupling section 7 for connecting the fluid line 3 is provided at the second connecting sleeve end 4b. In the illustrated example, the connecting sleeve 4 is straight. Alternatively, however, a bent or angled design would also be conceivable. The connecting sleeve ends 4a, 4b, where the connecting section 5 and the coupling section 7 are located, are in any case straight.

[0024] The connector 1 further comprises a clamping sleeve 8 for clamping the fluid line 3 and a locking sleeve 9 for locking the clamping sleeve 8 to the coupling section 7. The coupling section 7 has a receiving chamber AR into which the locking sleeve 9 can be inserted. Several retaining windows 10 are provided on the inner circumferential surface of the receiving chamber AR, spaced apart from one another in the circumferential direction. In the illustrated embodiment, four rectangular retaining windows 10 are provided by way of example, each spaced apart from the other at an angle of 90°.

[0025] The locking sleeve 9 has a first locking sleeve end 9a, which faces the first connecting sleeve end 4a in the insertion direction, and an opposing second locking sleeve end 9b. Several flexible retaining tabs 11 are provided on the outside of the locking sleeve 9, spaced apart from one another in the circumferential direction. The retaining tabs 11 are designed to engage in the retaining windows 10 of the coupling section 7 of the connecting sleeve 4 when the locking sleeve 9 is inserted into the receiving space AR. The number of retaining tabs 11 preferably corresponds to the number of retaining windows 10. In the example shown, four retaining tabs 10 are provided, each spaced apart from the other at an angle of 90°.

[0026] The retaining windows 10 are designed as through-openings and thus connect the inner circumferential surface with the outer circumferential surface of the connecting sleeve 4. The coupling can be released as intended, since the retaining tabs 11 can be released from their engaged position if necessary. This can be done, for example, by having a person press the retaining tabs 11 together from the outside through the retaining windows 10, particularly simultaneously. Alternatively, the retaining windows 10 could also be closed on the outside to create a coupling that is not designed to be released. In this case, the retaining tabs 11 would be concealed and therefore could not be actuated. The locking sleeve 9 has a circumferentially closed sleeve section 17. This gives the locking sleeve 9 increased rigidity. The sleeve section 17 is essentially cylindrical or at least partially cylindrical.The retaining tabs 11 each have a first tab end 11a, which is connected to the sleeve section 17 in the region of the first locking sleeve end 9a, and have a free second tab end 11b. The second tab ends 11b are spaced radially from an outer circumferential surface of the sleeve section 17.

[0027] The retaining tabs 11, or rather the second tab ends 11b, extend obliquely outwards towards the opposite second locking sleeve end 9b of the locking sleeve 9. When the locking sleeve 9 is inserted into the receiving space AR of the connecting sleeve 4, a force acts on the oblique outer surfaces of the retaining tabs 11, which elastically compresses the second tab ends 11b in a radial direction, for example, until the retaining tabs 11 abut the outer circumferential surface of the sleeve section 17. Upon further insertion, the retaining tabs spring back and engage in the retaining windows 10.

[0028] The retaining tabs 11 are each bounded by a first retaining surface in the direction of the second locking sleeve end 9b. The retaining windows 10 are each bounded by a second retaining end surface in the direction of the second connecting sleeve end 4b. When the locking sleeve 9 is engaged on the coupling section 8, the first retaining end surfaces of the retaining tabs 10 abut the second retaining surfaces of the retaining windows 11.

[0029] The clamping sleeve 8 has a first clamping sleeve end 8a, which faces the first connecting sleeve end 4a in the insertion direction, and has an opposing second clamping sleeve end 8b. Several flexible clamping fingers 12 are provided on the first clamping sleeve end 8a, spaced apart from each other in the circumferential direction. The clamping fingers each have a thickened free end 15. Locking surfaces 16 are provided on the thickened ends 15, facing the second clamping sleeve end 8b (see Fig. 2).

[0030] A closed annular section 13 is provided at the opposite second end of the clamping sleeve 8b.

[0031] The clamping sleeve 8 is made here in particular of a metallic material, e.g. brass or

[0032] The clamping sleeve 8 is preferably a turned part. The recesses between the clamping fingers 12 can be produced, for example, by machining, in particular milling.

[0033] A locking projection 14 is arranged on an inner side of the locking sleeve 9. This projection is designed to interact with the locking end faces 16 of the thickened free ends 15 of the clamping fingers 12 to lock the clamping sleeve 8 when the clamping sleeve 8 is inserted into the locking sleeve 9. The locking projection 14 is located on the inner circumferential surface of the sleeve section 17, which is cylindrical in this case, and comprises a circumferentially closed collar. An inclined insertion surface 18 is provided on the circumferential collar, facing the second end 9b of the locking sleeve (see Fig. 2).

[0034] In the illustrated embodiment, the receiving chamber AR of the coupling section 7 is cylindrical, and the locking sleeve 9 has a cylindrical guide section 19 that serves to guide the locking sleeve 9 within the receiving chamber AR. The guide section 19 has a closed outer guide surface. The guide section 19 is located at the first locking sleeve end 9b and limits the locking sleeve 9, particularly in the direction of the first locking sleeve end 9b. The guide section 19 has a larger diameter than the sleeve section 17. A shoulder is thus provided at the transition from the guide section 19 to the sleeve section 17, on which a substantially segmentally annular end face is provided, facing the second locking sleeve end 9b. The first tab ends 11a of the retaining tabs 11 are connected to the end face of the guide section 19.

[0035] In the illustrated embodiment, several elongated guide ribs 20, integrally formed with the sleeve section 17, are provided on its outer circumferential surface. Viewed circumferentially, the guide ribs 20 are located between two adjacent retaining tabs 11. A first end of each guide rib 20, facing the first locking sleeve end 9a, is integrally connected to the cylindrical guide section 19. The opposite second end of the rib is free. The outer circumferential surfaces of the guide ribs 20 and the outer circumferential surface of the guide section 19 form a common guide surface, which guides the locking sleeve 9 when it is inserted into the receiving space AR. The thickness of the retaining tabs 11 in the radial direction preferably corresponds to the height of the guide section 19 and the height of the guide ribs 20.This allows a substantially stepless cylindrical circumferential surface to be formed when the retaining tabs 11 are fully compressed and rest against the outer circumferential surface of the sleeve section 17. This facilitates the insertion of the locking sleeve 9 into the receiving space AR. The retaining tabs 11 are thus essentially complementary to the recesses formed between adjacent guide webs 20.

[0036] In the illustrated example, the clamping fingers 12 each have a clamping profile 21 on their inner surfaces, which is designed to interact with an outer circumferential surface of the fluid line 3 to retain the fluid line 3. The clamping profile 21 can, for example, have a number of teeth and / or a number of ribs and / or a number of pointed projections. The retaining profile 21 can be pressed into the outer circumferential surface of the fluid line by radially compressing the clamping fingers 12, thus enabling a substantially positive locking connection of the fluid line.

[0037] In the example shown, the clamping profiles 21 are integrally formed with the clamping fingers 12.

[0038] Based on Fig. 3a-Fig. 3d, an exemplary use of the connector 1 for coupling the fluid line 2 with the connecting sleeve 4 is described below.

[0039] In a first step (see Fig. 3a) the clamping sleeve 8 is arranged on an end section of the fluid line 2, for example by inserting the end of the fluid line through the annular section 13 at the second end of the clamping sleeve 8b or by pushing the clamping sleeve 8 with the annular section 13 forward onto the end section of the fluid line 3, as indicated by the corresponding arrows in Fig. 3a.

[0040] In a second step (see Fig. 3b), the locking sleeve 9 is attached to the coupling section 7 by inserting it, with the first end 9a of the locking sleeve leading, into the receiving space AR of the connecting sleeve 4 (as indicated by the arrow). A force is exerted by the connecting sleeve 4 on the inclined outer surface of the retaining tabs 11, causing the retaining tabs 11 to be elastically compressed radially. As the locking sleeve 9 is further inserted, the retaining tabs 11 spring back and engage in the corresponding retaining window 10. The second step does not necessarily have to follow the first step, but could also be performed before or simultaneously with the first step.

[0041] In a third step (see Fig. 3c), the fluid line 2, together with the clamping sleeve 8 attached to it, is inserted into the already mounted locking sleeve 9, as indicated by the arrow in Fig. 3c. A force is exerted radially on the thickened ends 15 of the clamping fingers 12 via the insertion surface 18, causing the clamping fingers 12 to be compressed. As the insertion continues, the locking mechanism engages with the projection 14, in particular the circumferential collar, on or behind the end faces 16 of the thickened free ends 15 of the clamping fingers 12 (see Fig. 3d). The coupling process is thus completed.

[0042] The exemplary embodiments show possible embodiment variants, whereby it should be noted at this point that the invention is not limited to the specifically illustrated embodiment variants, but rather various combinations of the individual embodiment variants are also possible and this possibility of variation lies within the skill of the person skilled in this technical field due to the teaching on technical action by the present invention.

[0043] The scope of protection is defined by the claims. However, the description and drawings must be consulted for the interpretation of the claims. Individual features or combinations of features from the different embodiments shown and described can, in themselves, represent independent inventive solutions. The problem underlying these independent inventive solutions can be found in the description.

[0044] All references to value ranges in this description are to be understood as encompassing any and all sub-ranges thereof. For example, the reference 1 to 10 is to be understood as including all sub-ranges, starting with a lower limit of 1 and ending with an upper limit of 10. This means that all sub-ranges begin with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g., 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10. Finally, for the sake of clarity, it should be noted that, for better understanding of the structure, some elements have been shown not to scale and / or enlarged and / or reduced.

[0045] Reference numeral list

[0046] 1 connector

[0047] 2 Fluid-carrying component

[0048] 3 Fluid line

[0049] 4 V connection sleeve

[0050] 4a First end of connecting sleeve

[0051] 4b First end of connecting sleeve

[0052] 5 V connection s section

[0053] 6 Recording section

[0054] 7 coupling section

[0055] 8 clamping sleeve

[0056] 8a First end of clamping sleeve

[0057] 8b Second end of clamping sleeve

[0058] 9 Locking sleeve

[0059] 9a First locking sleeve end

[0060] 9b Second locking sleeve end

[0061] 10 retaining windows

[0062] 11 retaining tabs

[0063] Ila First end of tabs

[0064] 11b Second end of tab

[0065] 12 pinching fingers

[0066] 13 Ring-shaped section

[0067] 14 locking projection

[0068] 15 Thickened free end

[0069] 16 Locking mechanism s Front surface

[0070] 17 Ring section

[0071] 18 insertion area

[0072] 19 Leadership section

[0073] 20 Guide bridge

[0074] 21 clamping profile

[0075] AR Recording Room

Claims

Patent claims 1. Connector (1) for fluid-conducting connection of a fluid-carrying Component (2) with a fluid line (3), comprising a connecting sleeve (4) with a first connecting sleeve end (4a) having a connecting section (5) for connection with a compatible receiving section (6) of the fluid-carrying component (2) and with an opposing second connecting sleeve end (4b) having a coupling section (7) for coupling the fluid line (3), a clamping sleeve (8) for clamping the fluid line (3) and a locking sleeve (9) for locking the clamping sleeve (8) on the coupling section (7), wherein the coupling section (7) has a receiving space (AR) for the locking sleeve (9), on the inner circumferential surface of which several circumferentially spaced retaining windows (10) are provided, wherein the locking sleeve (9) has several circumferentially spaced, flexible retaining tabs (11) on its outer surface, which are designed to engage in the retaining windows (10) of the coupling section (7),wherein the clamping sleeve (8) has several flexible clamping fingers (12) spaced apart from one another in the circumferential direction at a first clamping sleeve end (8a) facing the first connecting sleeve end (4a) and has a closed annular section (13) at the opposite second clamping sleeve end (8b), wherein a locking projection (14) is arranged on an inner side of the locking sleeve (9) which is designed to cooperate with locking surfaces (16) of the thickened free ends (15) of the clamping fingers (12) facing the second clamping sleeve end (8b) to lock the clamping sleeve (8), characterized in that the locking sleeve (9) comprises a circumferentially closed, substantially cylindrical sleeve section (17), wherein the retaining tabs (11) each have a first tab end (11a),the first locking sleeve end (9a) is connected to the sleeve section (17) in the area of ​​a first locking sleeve end (4a) facing the first connecting sleeve end (4a) and has a free second tab end (11b) which is spaced radially from an outer circumferential surface of the sleeve section (17) and extends obliquely outwards in the direction of an opposite second locking sleeve end (9b), and that the locking projection (14) is arranged on an inner circumferential surface of the sleeve section (17) and comprises a circumferentially closed circumferential collar which includes an oblique insertion surface (18) facing the second locking sleeve end (9b).

2. Connector (1) according to claim 1, characterized in that the retaining tabs (11) are each limited by a first retaining surface in the direction of the second locking sleeve end (9b), that the retaining windows (10) are each limited by a second retaining end surface in the direction of the second connecting sleeve end (4b), and that the first retaining end surfaces bear against the second retaining end surfaces of the retaining windows (11) when the retaining tabs (10) are engaged.

3. Connector (1) according to claim 1 or 2, characterized in that, for coupling the fluid line (2) with the connecting sleeve (4), the locking sleeve (9) can first be arranged on the coupling section (7) until the retaining tabs (11) snap into the retaining window (10) and the clamping sleeve (8) can be arranged on an end section of the fluid line (2), and then the fluid line (2) together with the clamping sleeve (8) can be inserted into the locking sleeve (9) so that the clamping fingers (12) can be radially compressed by the insertion surface (18) and the locking projection (14) snaps into the locking surfaces (16) of the thickened free ends (15) of the clamping fingers (12).

4. Connector (1) according to one of claims 1 to 3, characterized in that the receiving space (AR) of the coupling section (7) is cylindrical and that the locking sleeve (9) has a cylindrical guide section (19), in particular with a closed outer guide surface, for guiding the locking sleeve (9) in the receiving space (AR), which limits the locking sleeve (9) in the direction of the first locking sleeve end (9b) and which has a larger diameter than the sleeve section (17).

5. Connector (1) according to claim 4, characterized in that the first end ends (11a) of the retaining tabs (11) are attached to an end face of the guide section (19) facing the second locking sleeve end (9b).

6. Connector (1) according to claim 4 or 5, characterized in that several elongated guide webs (20) integrally formed with the sleeve section (17) are provided on the outer circumferential surface of the sleeve section (17), which, viewed circumferentially, each lie between two adjacent retaining tabs (11), wherein a first web end of each of the guide webs (20) is connected to the cylindrical guide section (19). and an opposite second end of the guide web is free and wherein the outer circumferential surfaces of the guide webs (20) and the outer circumferential surface of the guide section (19) form a common guide surface.

7. Connector (1) according to one of claims 4 to 6, characterized in that a thickness of the retaining tabs (11) in the radial direction corresponds to a height of the guide section (19) and / or the guide webs (20).

8. Connector (1) according to one of claims 1 to 7, characterized in that a number of the clamping fingers (12), preferably all clamping fingers (12), each have a clamping profile (21) on their inner surfaces, which is designed to cooperate with an outer circumferential surface of the fluid line (3) for holding the fluid line (3), wherein the clamping profile (21) preferably has a number of teeth and / or a number of ribs and / or a number of pointed projections.

9. Connector (1) according to claim 8, characterized in that the clamping sleeve (8) is formed in one piece, wherein the clamping profiles (21) are formed integrally with the number of clamping fingers (12).

10. Connector (1) according to one of claims 1 to 9, characterized in that the clamping sleeve (8) is made of a metallic material, wherein the clamping sleeve (8) is preferably a turned part.

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