connectors

Abstract

Plug-in connector (2) for connecting a hydraulic line (4) of a motor vehicle to a motor pump unit (6) of the motor vehicle, comprising a flange (8) with a first passage (10) for the passage of a hydraulic fluid, a conical collar (14) arranged at least partially around the first passage (10), a groove cut into the flange (8) coaxial with the passage (10), wherein a fastening section (14a) for inserting and soldering one end of the hydraulic line (4) is arranged within the conical collar (14).

Description

The present invention relates to a plug connector for connecting a hydraulic line to a chassis part of a motor vehicle, a plug connection on a chassis of a motor vehicle and a motor vehicle, comprising such a plug connector or such a plug connection.Plug connections with plug connectors for use in a motor vehicle are known from the prior art, for example for connecting a hydraulic line on a chassis of a motor vehicle. The known plug connectors in particular make possible a simple and rapid production of a hydraulic connection of a line to a motor vehicle component.The hydraulic tubes are usually soldered into the connectors. The soldered-in tubes have the disadvantageous tendency to tear and break directly at the outlet from the comparatively massive flange of the plug connector under high dynamic vibrational load. This reduces the component life or is problematic from a safety aspect.It is therefore the object of the present invention to at least partially eliminate the disadvantages described above in a simple, cost-saving and weight-saving manner. In particular, the object of the invention is to increase the robustness of hydraulic lines with respect to mechanical vibration loading.The above object is achieved by a plug connector having the features of claim 1, a plug connector according to claim 8 and a motor vehicle according to claim 11. Technical features disclosed for the plug connector according to the invention also apply here in connection with the plug connector according to the invention or the motor vehicle according to the invention and vice versa, so that with regard to the disclosure reference is or can always be made reciprocally to the individual aspects of the invention. Practical embodiments of the invention are set out in the dependent claims.According to the invention, a plug connector is provided for connecting a hydraulic line of a motor vehicle to an engine pump unit of the motor vehicle. In this case, the plug connector according to the invention comprises a flange with a first passage for the passage of a hydraulic fluid, a conical collar arranged at least partially around the first passage, a groove which is inserted into the flange coaxially with the passage, wherein a fastening section for the insertion and soldering of one end of the hydraulic line is arranged within the conical collar. The pierced groove or the conical collar formed thereby in particular brings about a more continuous, less abrupt transition from the solid flange to the comparatively filar tube and thus prevents local stress peaks.According to the invention, the present plug connector for connecting a hydraulic line of a motor vehicle to an engine pump unit of the motor vehicle, which is modified by a groove inserted concentrically to the lead-through / pipe axis, is therefore designed in particular to release a soldered-in pipe in the soldering region of the soldered-in pipe, corresponding to the depth of the inserted groove and the conicity of the remaining collar, not abruptly but over a certain length. The cut-in groove thus acts as a relief notch, which minimizes the stress peaks at the transition from flange to tube and in this way significantly reduces the risk of oscillation fractures.The present plug connector can preferably be arranged on the chassis of a motor vehicle. The groove in question can advantageously directly encompass the soldering region of the soldered-in tube in the flange. The first passage can also advantageously be at least partially guided through the conical collar. The plug connector according to the invention can preferably be formed from a metal material, for example an aluminum material or a ferrous material.According to the invention, a plug connector can preferably be understood to mean a connecting element which establishes a connection between two components at least partially via a plug-in process. A motor pump unit can be understood to mean, in the present case, preferably a component for conveying a hydraulic fluid, such as a hydraulic oil. In addition to an insert for connecting hydraulic components, the present plug connector can also be used for connecting other lines or line systems which are exposed to oscillations, for example in refrigeration technology or the like. A pierced groove can be understood in the context of the invention as preferably a groove which is introduced into a material by a piercing process or a cutting process. However, it is understood that such a groove can also be introduced into a material by comparable method steps.With regard to a structurally simple installation and simple and cost-effective production, it can advantageously be provided according to the invention that the plug connector is formed in one piece. A one-piece embodiment can be understood within the scope of the invention to mean, in particular, a monolithic construction in which the plug connector is produced or formed from a single piece of material.Within the scope of a structurally simple and stable connection of a hydraulic line of a motor vehicle to an engine pump unit of the motor vehicle, it can be advantageous in the present context if the plug connector has a second passage for receiving a fastening means for fastening the plug connector to the engine pump unit. Thus, the plug connector can be fastened to the housing of a motor pump unit, for example, in a simple manner by means of a screw or a bolt. It is also understood that other possibilities of fixing can also be considered, such as, for example, a fastening via fixing forks or the like.With regard to a stable and preferably sufficiently sealed connection between the plug connector and a motor pump unit, it can advantageously be provided according to the subject matter that the plug connector has a plug for insertion into a corresponding opening of a motor pump unit, wherein the plug preferably has grooves for inserting seals, wherein the plug is arranged in particular opposite the conical collar.In order to be able to provide a particularly large and fully circumferential cushioning and absorption of mechanical oscillations and mechanical stresses, it can additionally be advantageous if the groove is arranged fully circumferentially around the conical collar, wherein the groove is preferably formed conically on both sides. A conical design on both sides preferably means here that the groove runs conically not only adjacent to the conical collar, but also adjacent to the housing wall of the flange. It is also understood that the groove can alternatively also be formed or run conically only on one side.With regard to the greatest possible cushioning and absorption of mechanical oscillations and mechanical stresses, it can advantageously be provided according to the invention that the conical collar protrudes beyond the edge region of the flange at the end, wherein the conical collar preferably protrudes beyond the edge region of the flange at the end by at least one third of the length of the conical collar, wherein the conical collar protrudes beyond the edge region of the flange in particular by a length of 0.5 to 5 mm.It is understood that within the scope of a particularly compact embodiment, it can also be provided that the conical collar ends flush with the edge region of the flange at the end.The invention also relates to a plug connection for arrangement on a chassis of a motor vehicle, in particular for adaptive damper control, comprising a plug connector described above and a hydraulic line and a motor pump unit for transferring a hydraulic fluid. The plug connection according to the invention thus has the same advantages as have already been described in detail with reference to the plug connection according to the invention.With regard to the greatest possible cushioning and absorption of mechanical oscillations and mechanical stresses, it can advantageously be provided according to the invention that a line end of the hydraulic line is arranged in the fastening section within the conical collar.With regard to a stable and preferably sufficiently sealed connection between the plug connector and a motor pump unit, it can advantageously be provided according to the subject matter that the plug connector is connected to the motor pump unit via a plug, wherein the plug is preferably arranged opposite the conical collar. With regard to a sufficient sealing, an additional arrangement in the form of sealing rings or sealing disks can be provided for sealing purposes accordingly.The invention also relates to a motor vehicle having a plug connector described above, preferably having a plug connector described above. The motor vehicle according to the invention thus has the same advantages as have already been described in detail with reference to the plug connector according to the invention or the plug connection according to the invention.Further advantages, features and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can be essential to the invention individually or in any combination.They show schematically: FIG. 1 shows a plug connection according to the invention for arrangement on a chassis of a motor vehicle according to a first exemplary embodiment, FIG. 2 shows a plug connector according to the invention for connecting a hydraulic line of a motor vehicle to an engine pump unit of the motor vehicle according to a first exemplary embodiment (a), according to a second exemplary embodiment (b) and according to a third exemplary embodiment (c).FIG. 1 shows a plug connection 1 according to the invention for arrangement on a chassis of a motor vehicle according to a first exemplary embodiment.As can be seen from FIG. 1, the plug connection 1 according to the invention comprises a plug connection 2, via which a hydraulic line 4 and a motor pump unit 6 for transferring a hydraulic fluid are connected to one another.FIG. 2 shows a plug connector 2 according to the invention for connecting a hydraulic line 4 of a motor vehicle to an engine pump unit 6 of the motor vehicle according to a first exemplary embodiment (a), according to a second exemplary embodiment (b) and according to a third exemplary embodiment (c).As can be seen from FIG. 2, the plug connector 2 according to the invention comprises a flange 8 with a first passage 10 for the passage of a hydraulic fluid, a conical collar 14 arranged at least partially around the first passage 10, a groove 16 inserted into the flange 8 coaxially with the passage 10, wherein a fastening section 14 afor the insertion and soldering of one end of the hydraulic line 4 is arranged within the conical collar 14. The cut-in groove 16 or the conical collar 14 formed thereby in particular brings about a more continuous, less abrupt transition from the solid flange 8 to the comparatively filar tube and thus prevents local stress peaks.The plug connector 2 is here formed in one piece and, in addition to the first passage 10 for passing a hydraulic fluid through, has a second passage 12 for receiving a fastening means for fastening the plug connector 2 to the motor pump unit 6.Moreover, the plug connector 2 comprises a plug 18 for insertion into a corresponding opening of a motor pump unit 6.The groove 16 is also arranged over the full circumference around the conical collar 14 and is designed conically on both sides in the present case.According to the first embodiment of the plug connector 2 shown in FIG. 2 a, the conical collar 14 terminates flush with the edge region of the flange 8 at the end, whereas the conical collar 14 according to the second and third exemplary embodiments (see FIGS. 2 band 2 c ) projects beyond the edge region of the flange 8 at the end, according to the third embodiment, at least by one third of the length of the conical collar 14.The foregoing explanation of the embodiments describes the present invention solely by way of examples. Of course, individual features of the embodiments can be freely combined with one another, insofar as technically expedient, without departing from the scope of the present invention.

Claims

Plug connector (2) for connecting a hydraulic line (4) of a motor vehicle to an engine pump unit (6) of the motor vehicle, having: - a flange (8) having a first bushing (10) for passing a hydraulic fluid through, - a conical collar (14) arranged at least partially around the first bushing (10), - a groove inserted into the flange (8) coaxially with the bushing (10), - wherein a fastening section (14a) for inserting and soldering an end of the hydraulic line (4) is arranged within the conical collar (14).Plug connector (2) according to Claim 1, characterized in that the plug connector (2) is formed in one piece.Plug connector (2) according to Claim 1 or 2, characterized in that the plug connector (2) has a second passage (12) for receiving a fastening means for fastening the plug connector (2) to the motor pump unit (6), wherein the second passage (12) preferably has a smaller diameter than the first passage (10).Plug connector (2) according to one of the preceding claims, characterized in that the plug connector (2) has a plug (18) for insertion into a corresponding opening of a motor pump unit (6), wherein the plug (18) preferably has grooves for insertion of seals, wherein the plug (18) is arranged in particular opposite the conical collar (14).Plug connector (2) according to one of the preceding claims, characterized in that the groove (16) is arranged over the full circumference around the conical collar (14), wherein the groove (16) is preferably formed conically on both sides.Plug connector (2) according to one of the preceding claims, characterized in that the conical collar (14) protrudes beyond the edge region of the flange (8) at the end, wherein the conical collar (14) preferably protrudes beyond the edge region of the flange (8) at the end by at least one third of the length of the conical collar (14), wherein the conical collar (14) protrudes beyond the edge region of the flange (8) in particular by a length of 0.5 to 5 mm.Plug connector (2) according to one of the preceding claims, characterized in that the conical collar (14) ends flush at the end face with the edge region of the flange (8).Plug connection (1) for arrangement on a chassis of a motor vehicle, comprising a plug connection (2) according to one of the preceding claims, and a hydraulic line (4) and a motor pump unit (6) for transferring a hydraulic fluid.Plug connection (1) according to Claim 8, characterized in that one line end of the hydraulic line (4) is arranged in the fastening section (14a) within the conical collar (14).Plug connection (1) according to Claim 8 or 9, characterized in that the plug connector (2) is connected to the motor pump unit (6) via a plug (18), the plug (18) preferably being arranged opposite the conical collar (14).Motor vehicle, having a plug connector (2) according to one of Claims 1 to 7, preferably having a plug connector (1) according to one of Claims 8 to 10.

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