Line connection for a hydraulic brake or clutch of steer-guided vehicles and hydraulic brake of a steer-guided vehicle and method for producing a corresponding line connection

Abstract

The invention relates to a line connection (100) for a hydraulic brake or clutch of steerable vehicles, comprising: a line fitting (120) with a passage (121) and a projection (122); a hydraulic line (140) with an inner wall (142) and an outer wall (143); and a sleeve (160) with an inner wall (162) and an outer wall (163); wherein the projection (122) of the line fitting (120) is arranged on the inner wall (141) of the hydraulic line (140); wherein the sleeve (160) has a tool engagement section (1800) on the outer wall (161), and the inner wall (162) of the sleeve (160) is positively connected to the outer wall (143) of the hydraulic line (140) with respect to the axial direction (A) of the hydraulic line (140).

Description

[0001] The invention relates to a line connection, in particular for a hydraulic brake or clutch of steering-guided vehicles, comprising a line nozzle with a passage and an extension, a hydraulic line with an inner wall and an outer wall, and a sleeve with an inner wall and an outer wall, wherein the extension of the line nozzle is arranged on the inner wall of the hydraulic line.

[0002] Line connections for arranging a hydraulic line on a slave fitting or master fitting of a hydraulic actuating device, such as, for example, on a brake fitting of a steering-guided vehicle, are known from the prior art. These connections comprise a line connector for arranging the hydraulic line on the fitting, having a passage and an extension, and a hydraulic line with an inner wall and an outer wall. The extension has a screw connection, which serves to connect the extension of the line connector to the hydraulic line, in particular to its inner wall. For assembly, a sleeve is pressed onto the outer wall of the hydraulic line.

[0003] These known solutions have the disadvantage that a sufficiently secure installation, which can also withstand the pressures and temperatures occurring during heavy braking, cannot be achieved by simple means, so that the line connection must be pre-assembled with certain line lengths of the hydraulic line, so that the hydraulic line cannot be adjusted arbitrarily in length, but must have a predetermined length before installation.

[0004] Furthermore, line connections are known from the prior art in which the hydraulic line is pushed onto an extension of a line socket with a ramp-step structure. A compression sleeve with a thread formed on the inner wall of the compression sleeve is arranged on the outer wall of the hydraulic line, wherein the inner diameter of the compression sleeve is larger than the outer diameter of the hydraulic line. Using a pressing tool, the compression sleeve is pressed onto the hydraulic line in the area of ​​the extension of the line socket in such a way that the inner diameter of the compression sleeve is reduced and the thread of the compression sleeve is pressed into the outer wall of the hydraulic line. This solution creates a good connection between the compression sleeve, hydraulic line, and extension of the line socket, which can also withstand temperature fluctuations that may occur during braking.

[0005] However, this solution has the disadvantage that special crimping tools are required to create the line connection. The line connection cannot therefore be easily created after the hydraulic line has been installed in the vehicle. Therefore, hydraulic components are provided with connected hydraulic lines for installation on the vehicle, which have a pre-assembled length of hydraulic line. This results in the disadvantage that identical hydraulic components must be kept in stock and delivered with connected hydraulic lines, which have a specific and therefore different length depending on the vehicle to be equipped.

[0006] The present invention is therefore based on the object of further developing a line connection of the type mentioned at the outset in such a way that the hydraulic line can be easily and simply attached to the hydraulic component, in particular without the need to use special tools.

[0007] This object is achieved by a line connection according to claim 1 or 2 of the present invention and by a method according to one of claims 20 or 21. Further advantageous developments of the line connection according to the invention and the method for its assembly are specified in the dependent claims.

[0008] According to a first aspect of the present invention, a line connection, in particular for a hydraulic brake or clutch of steering-controlled vehicles, is provided. According to the invention, the line connection comprises a line connector with a passage and an extension, a hydraulic line with an inner wall and an outer wall, and a sleeve with an inner wall and an outer wall. The extension of the line connector is arranged on the inner wall of the hydraulic line.

[0009] According to this aspect of the invention, it is proposed that the inner wall of the sleeve is positively connected to the outer wall of the hydraulic line with respect to the axial direction of the hydraulic line.

[0010] According to this aspect of the invention, it is further proposed that the sleeve has a tool engagement section on the outer wall.

[0011] According to this aspect of the invention, there is the advantage that a reliable connection between the hydraulic line and the line nozzle can be formed in a simple manner, which can also withstand high pressures and temperatures, which can occur particularly on the slave side during heavy and frequent braking operations.

[0012] According to a second aspect of the present invention, a line connection is provided, particularly for a hydraulic brake or clutch of steering-controlled vehicles. The line connection comprises a line connector with a passage and an extension, and a hydraulic line with an inner wall and an outer wall. The extension of the line connector is arranged on the inner wall of the hydraulic line.

[0013] According to this aspect of the invention, it is proposed that the line nozzle has a sleeve with an inner wall, wherein the inner wall of the sleeve is positively connected to the outer wall of the hydraulic line with respect to the axial direction of the hydraulic line.

[0014] According to this aspect of the invention, there is the advantage that a reliable connection between the hydraulic line and the line nozzle can be formed in a simple manner, which can also withstand high pressures and temperatures, which can occur particularly on the slave side during heavy and frequent braking operations.

[0015] According to a third aspect of the present invention, a method for assembling a line connection, in particular for a hydraulic brake or clutch of steering-controlled vehicles, is proposed. The method comprises the following steps: Attaching a sleeve with an inner wall to an outer wall of a hydraulic line; Arranging an extension of a line nozzle in the hydraulic line so that the extension of the line nozzle is arranged on an inner wall of the hydraulic line.

[0016] According to this aspect of the invention, it is proposed that the inner wall of the sleeve is positively connected to the outer wall of the hydraulic line with respect to the axial direction of the hydraulic line.

[0017] According to a fourth aspect of the present invention, a method for assembling a line connection, in particular for a hydraulic brake or clutch of steering-controlled vehicles, is proposed. The method provides the following step: Arranging a line nozzle with an extension and a sleeve in a hydraulic line such that the extension of the line nozzle is arranged on an inner wall of the hydraulic line; and is characterized in that a sleeve of the line nozzle forms a positive connection between an inner wall of the sleeve and an outer wall of the hydraulic line with respect to the axial direction of the hydraulic line when arranging the line nozzle.

[0018] While the method according to the second aspect of the present invention is directed to the assembly of a line connection having the sleeve and the line nozzle as separate parts, the method according to the fourth aspect of the present invention is directed to the assembly of a line connection having a line nozzle with a sleeve, wherein the line nozzle and the sleeve are formed in one piece.

[0019] The positive connection between the inner wall of the sleeve and the outer wall of the hydraulic line in the axial direction of the hydraulic line enables a secure connection between the line nozzle and the hydraulic line to be achieved, which can also withstand high braking pressures and the associated high temperatures.

[0020] The first aspect of the present invention provides the advantage that the tool engagement portion allows the sleeve to be mounted on the hydraulic line using conventional means. For example, the tool engagement portion may comprise a hexagon that can be engaged with a conventional tool to position the sleeve on the hydraulic line.

[0021] In general, the invention according to the first, second, third, and fourth aspects is advantageous in that the line connection can be installed without special tools or equipment. Therefore, the line connection can be formed not only by the manufacturer but also by an original equipment manufacturer, who generally does not have special pressing tools and the corresponding know-how. This allows the original equipment manufacturer to easily adjust the length of the hydraulic line during bicycle assembly by using meter-length hydraulic lines, because the line connection can be formed not only by the manufacturer but also by the original equipment manufacturer.

[0022] According to a fifth aspect of the present invention, a line connector for use in a line connection according to the invention is provided, in particular for a hydraulic brake or clutch of steering-controlled vehicles. The line connector has a passage and an extension with an outer wall having a ramp-step structure.

[0023] According to the invention, the ramp step structure can have first ramp steps with a first outer diameter and second ramp steps with a second outer diameter, wherein the first outer diameter and the second outer diameter are different from each other.

[0024] The different outer diameters of the first and second ramp stages make it possible to achieve a better seal on a line connection because a higher compression force can be achieved in the radial direction. This increases the pull-out force required to remove the line connector. This is particularly advantageous when the temperature within the hydraulic line rises rapidly, for example, during heavy braking, as can be the case with the slave cylinder of a brake system.

[0025] It is particularly advantageous if the inner wall of the sleeve has a surface profile designed to engage the outer wall of the hydraulic line, thereby forming a positive connection between the inner wall of the sleeve and the outer wall of the hydraulic line. In this case, the length of the hydraulic line can first be adjusted as required before the surface structure on the inner wall of the sleeve engages the outer wall of the hydraulic line when the hydraulic line is connected by forming the line connection.

[0026] In this case, it is advantageous if the outer wall of the hydraulic line is made of a moldable material that also has sufficient strength to ensure a good fit. The hydraulic line or the outer wall of the hydraulic line can be made of various materials. For example, the hydraulic line or the outer wall of the hydraulic line can be made of a thermoplastic or a thermoplastic material, such as polyethylene. The thermoplastic or the thermoplastic material can be fiber-free, which makes the hydraulic line more elastic.

[0027] The thermoplastic or thermoplastic material can also be provided with a fiber component, such as a nylon fiber component. The fiber component can be directly integrated into the material or can be provided as fiber layer(s) or fabric layer(s) arranged between two layers of thermoplastic or thermoplastic material.

[0028] It is also possible that the hydraulic line or the outer wall of the hydraulic line is made of flexible steel.

[0029] According to the invention, the inner wall of the sleeve can have a ramp-step structure. A ramp-step structure, as defined in the present application, is a structure with one or more ramps or steps that are designed and arranged in such a way that they allow the sleeve to be plugged onto the hydraulic line and prevent it from being removed from the hydraulic line. A ramp-step structure can achieve very good hydraulic sealing.

[0030] Such a ramp-step structure can be an example of a surface structure on the inner wall of the sleeve. When connecting the sleeve to the hydraulic line, the ramp-step structure provided on the inner wall of the sleeve engages with the outer wall of the hydraulic line. The ramp-step structure on the inner wall of the sleeve and the outer wall of the hydraulic line then form the positive connection between the inner wall of the sleeve and the outer wall of the hydraulic line. Such a positive connection, which has a ramp-step structure on at least one side, is particularly stable with respect to the axial direction of the hydraulic line.

[0031] According to the invention, the inner wall of the sleeve can have a threaded portion that is screwed onto the outer wall of the hydraulic line. Accordingly, the inner wall of the sleeve can have a threaded portion that engages the outer wall of the hydraulic line or that deforms the outer wall of the hydraulic line, specifically such that the sleeve and the hydraulic line are positively connected to one another with respect to the axial direction of the hydraulic line.

[0032] According to the invention, the threaded section can be an M6 threaded section, preferably with a pitch of 1 mm. This allows a standardized profile to be formed on the inner wall of the sleeve.

[0033] Other possible profiles include M5, M4, M7, or M8 thread sections. These isometric thread sections can be fine, medium, or coarse. Non-standardized special profiles are also conceivable.

[0034] According to the invention, the inner wall of the sleeve has a threaded portion which comprises a fine thread in a first axial portion of the inner wall and a coarse thread in a second axial portion of the inner wall. For example, it can be provided that the first portion with the fine thread is a portion which comes into contact with the outer wall of the hydraulic line further in the axial direction than the second portion, specifically with respect to an end face or the end of the hydraulic line. Compacting the threaded portion at a position which is further away from the end face of the hydraulic line than the coarse thread is advantageous in that a greater radial compression of the sleeve, and thus a more stable positive connection between the inner wall of the sleeve and the outer wall of the hydraulic line, can be achieved.

[0035] In general, according to the embodiment described above, the threaded portion may have a first pitch in the first axial section and a second pitch in the second axial section. The transition between the first pitch and the second pitch may be either discrete or continuous.

[0036] Other non-isometric thread sections can also be used. For example, inch threads can be used. Inch threads can be 1 / 8, 5 / 32, 3 / 16, 7 / 32, 1 / 4, or 5 / 16 inch threads. Other non-standardized profiles can also be used as thread sections.

[0037] The threaded portion can be an internal thread. The threaded portion can also be an external thread. It can also be provided that the inner wall of the sleeve has at least a first and a second portion, wherein the first portion has an internal thread and the second portion has an external thread.

[0038] If the threaded section is an internal thread, the contact surface between the threaded section and the outer wall of the hydraulic line is larger, causing the threaded section to deform the outer wall of the hydraulic line, resulting in a shallow counter profile or no counter profile being cut into the outer wall of the hydraulic line. This can reduce or prevent the threaded section from penetrating the outer wall of the hydraulic line.

[0039] If the threaded section is an external thread, then this engages with the outer wall of the hydraulic line to form both a positive and a non-positive connection between the inner wall of the sleeve and the outer wall of the hydraulic line.

[0040] According to the invention, the inner wall of the sleeve has a first axial section and a second axial section, wherein the first axial section has a ramped step structure and the second axial section has a threaded section. This makes it possible, on the one hand, to achieve a high pressing force on the outer wall of the hydraulic line through the ramped step structure, and, on the other hand, to ensure a stable arrangement of the sleeve on the outer wall of the hydraulic line or on the line connector, in particular on an outer wall of the line connector, through the threaded section.

[0041] According to the invention, the inner wall of the sleeve has a smaller inner diameter than the outer diameter of the hydraulic line. This makes it possible to create a frictional connection between the inner wall of the sleeve and the outer wall of the hydraulic line in addition to the positive connection, so that the line connection can withstand higher pressures and temperatures.

[0042] According to the invention, the inner diameter can be in a range between approximately 4.8 mm and approximately 4.9 mm, and the outer diameter of the hydraulic line can be approximately 5 mm or more. This creates a press fit, whereby the sleeve and the hydraulic line can preferably be joined together under pressure and without additional heating. However, the application also encompasses the case in which the sleeve and the hydraulic line can be joined together under the influence of pressure and heat.

[0043] According to the invention, the extension of the line nozzle is arranged on the inner wall of the hydraulic line in a form-fitting and / or force-fitting manner with respect to the axial direction of the hydraulic line. This connects the hydraulic line not only to the sleeve but also to the line nozzle, thus improving the mechanical stability of the line connection.

[0044] The extension may have a surface profile which is designed to engage with the inner wall of the hydraulic line in order to form a positive and / or non-positive connection between the inner wall of the hydraulic line and the extension.

[0045] According to the invention, the extension of the line nozzle has a ramp step structure.

[0046] According to the invention, the extension of the pipe socket has a pine cone structure.

[0047] According to the invention, the extension of the pipe socket has a threaded section.

[0048] According to the invention, the extension of the pipe socket has any combination of a ramp step structure and / or a pine cone structure and / or a threaded section.

[0049] The threaded section, like the sleeve, can have an isometric profile or an inch profile with different sizes (M3, M4, M5, M6, M7, M8, 3 / 32, 1 / 8, 5 / 32, 3 / 16, 7 / 32, 1 / 4 or 5 / 16) or a special profile.

[0050] According to the invention, the same thread can be provided on the inner wall of the sleeve along the entire length of the sleeve. The thread can be used, on the one hand, to connect the line connector to the sleeve and, on the other hand, to connect the sleeve to the hydraulic line. A positive connection can be formed between the sleeve and the hydraulic line.

[0051] According to the invention, different threads can be provided on the inner wall of the sleeve along its length. One thread can be provided in the area of ​​the connection between the sleeve and the line connector, and another thread can be provided in the area of ​​the connection between the sleeve and the outer wall of the hydraulic line.

[0052] For example, a thread with a smaller pitch can be provided in the area of ​​the connection between the sleeve and the line connector, and a thread with a larger pitch can be provided in the area of ​​the connection between the sleeve and the outer wall of the hydraulic line. This has the advantage that when the sleeve is screwed onto the line connector, the hydraulic line can be subjected to greater pressure, achieving a higher pressing force between the outer wall of the hydraulic line and the inner wall of the sleeve.

[0053] According to the invention, the threads can be parallel. Alternatively, the threads can also be opposite. This has the advantage that when the sleeve is screwed onto the line connector, the hydraulic line is drawn into the sleeve, which can result in a better connection between the sleeve and the hydraulic line.

[0054] According to the invention, a recess can be provided between the different threaded sections.

[0055] According to the invention, the inner wall of the sleeve can have a first threaded portion, and the extension of the line connector can have a second threaded portion, wherein the first threaded portion and the second threaded portion preferably have opposite directions of rotation. For example, the first threaded portion can be a right-hand thread and the second threaded portion can be a left-hand thread, or the first threaded portion can be a left-hand thread and the second threaded portion can be a right-hand thread. By having opposite directions of rotation of the first threaded portion and the second threaded portion, twisting of the hydraulic line when arranging the extension in the hydraulic line can be reduced or avoided.

[0056] Corresponding to the sleeve, the extension can also have a threaded section which has a first pitch in a first axial section and a second pitch in a second axial section. For example, it can be provided that the first section with a fine thread (first, lower pitch) is a section that comes into contact with the inner wall of the hydraulic line further in the axial direction than the second section with a coarse thread (second, larger pitch) in relation to an end face of the hydraulic line. The compression of the threaded section at a position which is further away from the end face of the hydraulic line than the coarse thread is advantageous in that a higher radial compression of the extension and thus a more stable form fit between the extension and the inner wall of the hydraulic line and better compression of the hydraulic line can be achieved.

[0057] According to the invention, the line connector can be part of a master device. A master device can, for example, be part of a hydraulic braking device, clutch device, or actuating device.

[0058] According to the invention, the pipe connector and the sleeve can be connected to each other in a force-locking and / or form-locking manner. This can increase the mechanical stability of the pipe connection.

[0059] According to the invention, the sleeve has a bead, and the pipe connector has a corresponding groove in which the bead is received. The bead and groove can be formed or provided circumferentially or only in specific sections along the circumference. This is a particularly simple and secure design for a positive connection between the sleeve and the pipe connector.

[0060] However, it may also be the case that the pipe fitting has a bead and the sleeve has a groove in which the bead is received. As explained above, the bead and groove can be formed or provided circumferentially or only in certain sections along the circumference.

[0061] According to a further embodiment, it is provided that the positive and / or non-positive connection between the sleeve and the line nozzle is realized by a profile on the outer wall of the line nozzle and a complementary counter-profile on the inner wall of the sleeve.

[0062] For example, the counter-profile on the inner wall of the sleeve can be a threaded section, which also contributes to the positive connection between the inner wall of the sleeve and the outer wall of the hydraulic line. Preferably, only one threaded section can be provided in the inner wall of the sleeve, which is used both for the positive connection between the sleeve and the hydraulic line and for the positive connection between the sleeve and the line nozzle. In this case, both the outer wall of the hydraulic line and the outer wall of the line nozzle can have the same diameter in the section adjacent to the hydraulic line.

[0063] According to a further embodiment, a positive connection between the sleeve and the line nozzle is realized in that the sleeve has a tooth structure and the line nozzle has a counter-tooth structure, wherein the tooth structure and the counter-tooth structure are in engagement with each other.

[0064] According to the invention, the pipe socket and the sleeve can be formed in one piece.

[0065] According to the invention, the sleeve has a stop, in particular a circumferential stop. The stop can be arranged, in particular, between an end face of the line connector and an end face of the hydraulic line. This allows the line connector and the hydraulic line to be aligned with each other in simple steps.

[0066] According to the invention, a diameter of the inner wall of the sleeve can change in the axial direction of the sleeve or the hydraulic line. For example, the diameter of the inner wall of the sleeve can increase in an insertion direction along the axial direction of the sleeve. This can simplify the application of the sleeve to the outer wall of the hydraulic line, whereby the smaller diameter of the inner wall of the sleeve in a connection area of ​​the sleeve can achieve a stronger compression between the inner wall of the sleeve and the outer wall of the hydraulic line.

[0067] According to the invention, an outer diameter of the extension of the line connector can vary along the axial direction of the hydraulic line. For example, the diameter of the extension of the line connector can decrease along the axial direction of the hydraulic line to simplify insertion of the extension into the hydraulic line and to enable or improve a positive and / or non-positive fit at the end of the extension.

[0068] According to the method according to the invention, arranging the line nozzle in the hydraulic line comprises inserting the line nozzle into the hydraulic line.

[0069] According to the third or fourth aspect of the invention, it can be provided that, after the extension of the power connector is arranged in the hydraulic line, the sleeve and the line connector are connected to one another in a form-fitting and / or force-fitting manner, in particular with respect to the axial direction of the hydraulic line. For example, it can be provided that the sleeve has a threaded portion and, in a first step, the sleeve is screwed onto the line, in particular onto the outer wall of the line, in a first direction, so that the sleeve engages the outer wall of the hydraulic line. In a second step, the extension of the line connector is then inserted, in particular pressed, into the hydraulic line. In a third step, the sleeve is then screwed in a second direction, which is opposite to the first direction.

[0070] According to the invention, for example, a bead of the sleeve and / or the line nozzle can be received in a corresponding groove of the line nozzle and / or the sleeve.

[0071] According to the invention, a method according to the invention according to the second or third aspect of the invention can be used to form a line connection according to the invention according to the first aspect of the present invention.

[0072] According to the fifth aspect of the present invention, the first outer diameter is larger than the second outer diameter, and the second ramp steps are arranged at a free end of the extension. As a result, the ramp steps with the larger diameter are closer to the end of the hydraulic line, allowing a stronger pressing force to be generated in this section of the hydraulic line. Consequently, the hydraulic line can be better sealed, especially under critical operating conditions.

[0073] The invention is described below with reference to the exemplary embodiments shown in the figures. The following reference numerals are used: 100 line connection 120 pipe sockets 121 passage 122 extension 123 Ramp step structure 124 ramp steps 125 threaded section 126 stop 127 Ramp step with larger diameter 128 section with larger diameter 129 Section with larger diameter 140 hydraulic line 141 passage 142 inner wall 143 Exterior wall 144 inner layer 145 reinforcement layer 146 Outer layer 160 sleeve 161 passage 162 inner wall 163 exterior wall 164 threaded section 165 contact surfaces 180 tool engagement section 181 flat area 190 Tool engagement section 191 flat area 200 line connection 220 pipe sockets 221 passage 222 extension 223 threaded section 225 threaded section 260 sleeve 262 inner wall 263 Outer wall 265 threaded section 300 line connection 320 pipe sockets 321 passage 322 extension 323 Ramp step structure 324 Ramp step 325 threaded section 360 sleeve 361 passage 362 inner wall 363 exterior wall 364 threaded section 365 contact surfaces 366 ramp step structure 367 Ramp step 370 recess 380 Tool engagement section 381 flat area 390 Tool engagement section 391 flat area 400 line connection 420 pipe sockets 421 Passage 422 extension 423 Ramp step structure 424 Ramp step 425 threaded section 428 Press-fit section 460 sleeve 461 passage 462 inner wall 463 exterior wall 464 threaded section 465 contact surfaces 466 Ramp step structure 467 Ramp step 468 Press-fit section 469 attack 480 Tool engagement section 481 flat area 490 Tool engagement section 491 flat area 500 line connection 520 pipe sockets 521 passage 522 extension 523 Ramp step structure 524 ramp step 560 sleeve 561 passage 562 inner wall 563 exterior wall 564 threaded section 565 contact surfaces 566 Ramp step structure 567 Ramp step 620 pipe sockets 760 sleeve 770 recess 771 threaded section 772 threaded section 820 pipe sockets 830 groove 831 bulge 860 sleeve 873 bulge 874 groove

[0074] Unless otherwise stated, reference numerals differing by 100 or a multiple of 100 throughout the present disclosure are intended to describe the same or corresponding features or components, so that reference can be made to the respective corresponding descriptions. For example, line connectors are designated by reference numerals 20, 120, 220, 320, etc.

[0075] Short description of the characters: Fig. 1 shows a sectional view of a line connection according to the invention along the lines II of Fig. 2. Fig. 2 shows a side view of the cable connection of Fig. 1. Fig. 3 shows a schematic representation of the process steps of a method according to the invention for assembling the line connection of Fig. 1. Fig. 4 shows a side view of the cable connection of Fig. 1 in process step S1 of Fig. 3. Fig. 5 shows a sectional view of the line connection of Fig. 4 along lines VV from Fig. 4. Fig. 6 shows a side view of the cable connection of Fig. 1 according to process step S2 of Fig. 3. Fig. 7 shows a sectional view of the line connection of Fig. 6 along lines VII-VII from Fig. 6. Fig. 8 shows a side view of the cable connection of Fig. 1 according to process step S3 of Fig. 3. Fig. 9 shows a sectional view of the line connection of Fig. 8 along lines IX-IX from Fig. 8. Fig. 10 shows a side view of the sleeve of the cable connection according to Fig. 1. Fig. 11 shows a perspective view of the sleeve of the cable connection according to Fig. 1. Fig. 12 shows a side view of the pipe socket of the pipe connection according to Fig. 1. Fig. 13 shows one of the Fig. 1 corresponding view of a line connection according to the invention with an alternative line nozzle for connection to another hydraulic component along the lines XIII-XIII of Fig. 14. Fig. 14 shows a side view of the line connection of Fig. 13. Fig. 15 shows a side view of the pipe socket of the pipe connection according to Fig. 13. Fig. 16 shows one of the Fig. 1 corresponding view of a line connection according to the invention with an alternative line nozzle for connection to another hydraulic component along the lines XIII-XIV of Fig. 17. Fig. 17 shows a side view of the line connection of Fig. 17. Fig. 18 shows a side view of the pipe socket of the pipe connection according to Fig. 16. Fig. 19 shows one of the Fig. 1 corresponding view of a line connection according to the invention with an alternative line nozzle for connection to another hydraulic component along the lines XIX-XIX of Fig. 20. Fig. 20 shows a side view of the line connection of Fig. 19. Fig. 21 shows a side view of the pipe socket of the pipe connection according to Fig. 19. Fig. 22 shows a side view of the pipe socket of Fig. 15, where the individual threads of the threaded section are shown. Fig. 23 shows the pipe connection of Fig. 22 in combination with a sleeve. Fig. 24 shows a sectional view of the combination of Fig. 23 along lines XIV-XIV from Fig. 23. Fig. 25 shows a detailed view of Circle XXV of Fig. 24. Fig. 26 shows a partial view of the extension of the pipe socket of Fig. 22. Fig. 27 shows a Fig. 26 corresponding view of an alternative design of the extension of the line stud for a line connection according to the invention. Fig. 28 shows a Fig. 26 corresponding view of an alternative design of the extension of the line nozzle for a line connection according to the invention. Fig. 29 shows a Fig. 26 corresponding view of an alternative design of the extension of the line nozzle for a line connection according to the invention. Fig. 30 shows a Fig. 26 corresponding view of an alternative design of the extension of the line nozzle for a line connection according to the invention. Fig. 31 shows a Fig. 22 corresponding view of an alternative design of a line nozzle for a line connection according to the invention. Fig. 32 shows a sectional view of the pipe socket of Fig. 31 along lines XXXII-XXXII from Fig. 31. Fig. 33 shows a detailed sectional view of the extension of the pipe socket of Fig. 32. Fig. 34 shows one of the Fig. 1 corresponding view of a line connection according to the invention with an alternative line nozzle for connection to another hydraulic component along the lines XXXIV-XXXIV of Fig. 35. Fig. 35 shows a side view of the line connection of Fig. 34. Fig. 36 shows a side view of a line connection according to the invention. Fig. 37 shows a sectional view of the pipe socket of Fig. 36 along lines XXXVII-XXXVII from Fig. 36. Fig. 38 shows a side view of the pipe connection of the pipe connection of Fig. 37. Fig. 39 shows a side view of a brake calliper of a hydraulic disc brake with a line connection according to the Fig. 19 to 21. Fig. 40 shows another side view of the brake caliper of Fig. 39. Fig. 41 shows a side view of a brake calliper of a hydraulic disc brake with a line connection according to the Fig. 16 to 18 Fig. 42 shows another side view of the brake caliper of Fig. 41. Fig. 43 shows one of the Fig. 1 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 44 shows a view of the line connection of Fig. 43 from the left. Fig. 45 shows one of the Fig. 1 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 46 shows a view of the line connection of Fig. 47 from the left. Fig. 47 shows one of the Fig. 43 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 48 shows one of the Fig. 47 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 49 shows one of the Fig. 47 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 50 shows a view of the line connection of Fig. 49 from the left. Fig. 51 shows a view of the line connection of Fig. 52 from the left. Fig. 52 shows one of the Fig. 47 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 53 shows one of the Fig. 52 corresponding sectional view of a line connection according to an embodiment of the invention. Fig. 54 shows one of the Fig. 38 corresponding side view of a line nozzle for a line connection according to an embodiment of the invention. Fig. 55 shows a sectional view of the pipe socket of Fig. 54 along the lines LV-LV from Fig. 54. Fig. 56 shows one of the Fig. 54 corresponding side view of a line nozzle for a line connection according to an embodiment of the invention. Fig. 57 shows a sectional view of the pipe socket of Fig. 56 along the lines LV-LV from Fig. 56. Fig. 58 shows a sectional view corresponding Fig. 25 with a sleeve and a line nozzle for a line connection according to an embodiment of the invention. Fig. 59 shows a sectional view corresponding Fig. 25 with a sleeve and a line nozzle for a line connection according to an embodiment of the invention. Fig. 60 shows a schematic view of a sleeve and a conduit fitting for a conduit connection according to an embodiment of the invention. Fig. 61 shows a schematic view of a sleeve and a conduit fitting for a conduit connection according to an embodiment of the invention. Fig. 62 shows a schematic view of a sleeve and a conduit fitting for a conduit connection according to an embodiment of the invention.

[0076] Fig. 1 shows a sectional view of a line connection 100 according to the invention according to a first embodiment.

[0077] The line connection 100 has a line nozzle 120, a hydraulic line 140 and a sleeve 160.

[0078] The hydraulic line 140 according to the design of Fig. 1 has a passage 141 for the hydraulic fluid as well as an inner wall 142 and an outer wall 143. The hydraulic line 140 has a multi-layer structure and includes an inner layer 144, a reinforcement layer 145, and an outer layer 146, with the reinforcement layer 145 being arranged between the inner layer 144 and the outer layer 145. The inner wall 142 of the hydraulic line 140 defines the passage 141 of the hydraulic line 140 and is the inside of the inner layer 144. The outer wall 143 of the hydraulic line is the outside of the outer layer 146.

[0079] According to alternative embodiments of the invention, the hydraulic line can also be designed without a reinforcement layer.

[0080] The line connector 120 has a passage 121 for the hydraulic fluid. The line connector 120 has an extension 122, which is arranged in the hydraulic line 140 and on the inner wall 142 of the hydraulic line 140. The passage 121 is hydraulically or pneumatically connected to the passage 141 of the hydraulic line 140. The extension 122 has a ramp step structure 123 with preferably several ramp steps 124, which are arranged and designed such that they can form a positive connection between the extension 122 and the inner wall 141 of the hydraulic line 140 when the extension 122 is arranged in the hydraulic line. According to the embodiment of Fig. 1, the ramp step structure 123 engages the inner wall 142 of the hydraulic line 140. This creates a positive and non-positive connection between the line connector 120 and the hydraulic line 140.

[0081] The sleeve 160 has a passage 161 in which the hydraulic line 140 is arranged. The sleeve has an inner wall 162 and an outer wall 163. A threaded portion 164, preferably designed as an internal thread, is formed on the inner wall 162. The threaded portion 164 of the inner wall 162 of the sleeve 160 is connected to the outer wall 143 of the hydraulic line 140 such that, with respect to the axial direction A of the hydraulic line 140, a positive connection is formed between the sleeve and the hydraulic line 140. The positive connection is achieved by the threaded portion 164, which is formed on the inner wall 162 of the sleeve 160. This threaded section 164 engages in the outer wall 143 of the hydraulic line 140 and thereby forms the positive connection between the inner wall 162 of the sleeve 160 and the outer wall 143 of the hydraulic line 140.

[0082] The mechanical stability of the positive connection between the inner wall 162 of the sleeve 160 and the outer wall 143 of the hydraulic line 140 can be improved by making the inner diameter of the inner wall 162 of the sleeve 160 smaller than the outer diameter of the outer wall 143 of the hydraulic line 140. For example, the diameter of the inner wall 162 of the sleeve can be less than or equal to approximately 4.8 mm, while the outer diameter of the outer wall 143 of the hydraulic line 140 can be greater than or equal to approximately 5 mm. This creates a press fit between the inner wall 162 of the sleeve 160 and the outer wall 143 of the hydraulic line 140, in addition to the engagement of the threaded portion 164 in the outer wall 143 of the hydraulic line.In this case, in addition to the positive connection between the sleeve 160 and the hydraulic line 140, there is also a force-locking connection between the inner wall 162 of the sleeve 160 and the outer wall 143 of the hydraulic line 140.

[0083] The sleeve 160 has on its outer wall 161 a tool engagement portion 180 which includes at least one flat area 181 on which a tool can engage in order to rotate the sleeve about the axis A. In the case of Fig. 1, the tool engagement portion 180 has an external hexagon with six flat areas 181. Alternatively, the tool engagement portion may also have, for example, two opposing flat areas 181 that can be brought into engagement with a corresponding tool in order to be able to rotate the sleeve 160 about the axis so that the sleeve can, for example, be screwed onto the hydraulic line 140 or displaced in the longitudinal direction of the hydraulic line 140, i.e., along the axis A.

[0084] The conduit fitting 120 may also have a tool engagement portion 190, which may have at least one flat area 191 corresponding to the tool engagement portion 180. As shown particularly in the Fig. As can be seen in Figures 6 to 9, the tool engagement section 190 has two opposing flat areas 191 for the engagement of a tool. The tool engagement sections 180 and 190 can be designed such that one or the same tools can be used. This makes it possible to assemble both the sleeve 160 and the line connector 120 with the hydraulic line 140 using a single tool in order to achieve the line connection 100 according to the invention.

[0085] The line connection 100 according to the Fig. 1 can be assembled according to the invention according to the following method, as described in connection with the Fig. 3 to 9 are described:

[0086] In a first step S1 ( Fig. 4 and Fig. 5) The sleeve 160 is screwed onto the outer wall 143 of the hydraulic line 140 in a first direction R1 using a tool that can be engaged with the tool engagement portion 180, so that the inner wall 162 of the sleeve 160 is arranged on the outer wall 143 of the hydraulic line 140. The threaded portion 164 of the inner wall 162 of the sleeve 160 engages the outer wall 143 of the hydraulic line 140, so that a positive connection is formed between the inner wall 162 of the sleeve 160 and the outer wall 143 of the hydraulic line 140;

[0087] in a second step S2 ( Fig. 6 and Fig. 7) The extension 122 of the line connector 120 is arranged in the hydraulic line 140, wherein the line connector 140 can in particular be pressed into the hydraulic line. The ramp step structure 123 of the line connector 120 engages the inner wall 142 of the hydraulic line 340, so that a positive and non-positive connection is formed between the hydraulic line 140 and the line connector 120.

[0088] in a third and preferably final step S3 ( Fig. 8 and Fig. 9) the sleeve 160 is preferably screwed in a second direction R2, which is opposite to the first direction R1, using a tool which engages the tool insert 180, until the threaded portion 164 of the sleeve 160 engages the threaded portion 125 of the conduit stub 120 and the sleeve 160 abuts against the stop 126 of the conduit stub 120, which may be formed, for example, by a step towards the

[0089] Tool engagement portion 190 may be formed.

[0090] The Fig. 13 to 21 show alternative designs of line nozzles for line connections according to the invention for connection to various hydraulic components known to the person skilled in the art, in particular of hydraulic bicycle brakes, such as brake calipers of disc brakes.

[0091] Fig. Figure 27 shows a pipe connector according to an embodiment of the invention, which differs from known pipe connectors in that the extension 122 of the pipe connector has a section with a larger diameter. For clarification, Fig. 27 to 33 an auxiliary line H is drawn in each case. In Fig. 27 it can be seen that the ramp step 127 adjacent to the threaded section 125 and the adjoining ramp step 124 have a larger diameter than the other ramp steps 123. For example, the diameter can be approximately 2.8 mm instead of 2.5 mm. For example, the diameter of the larger ramp steps 124 and 127 can be more than 5%, preferably more than 7.5%, and more preferably more than 10% of the diameter of the smaller ramp steps 123. This design has the advantage that a higher contact force is achieved when installing the hydraulic line, so that even at higher temperatures, which can occur during prolonged braking, sufficient protection is provided against unwanted loosening of the line connection due to the forces occurring during braking, which would pull the hydraulic line out of the seat between the line nozzle and the sleeve.

[0092] Fig. 28 shows a variant of the pipe socket of Fig. 27 where the ramp step has a lower gradient than the corresponding ramp step 127 of Fig. 27, such that the ramp step 127 also on the in Fig. 28 left side has a larger diameter, resulting in a higher pressing force between the extension 122 and the hydraulic line 140 when the line connection is mounted.

[0093] Fig. 29 shows a variant of the pipe socket of Fig. 27, which features a section 128 with a larger diameter, which also results in a higher contact force when the cable connection is installed. Section 128 does not have a ramp structure here, but is designed more like a bead.

[0094] Fig. 30 shows a variant of the pipe fitting of Fig. 27, which features a section 129 with a larger diameter, which also provides a higher contact pressure when the cable connection is installed. Section 129 does not have a ramp structure here, but rather is designed as a section with a uniformly larger diameter.

[0095] The Fig. 31 to 33 show a variant of the pipe connection piece of Fig. 27, in which a ramp step 124 with a larger diameter is provided, which is formed adjacent to the threaded portion 125. This also results in a higher contact force when the cable connection is installed.

[0096] The versions shown and described can also be combined as desired.

[0097] The Fig. 36 to 38 show a line connection 200 according to a further embodiment of the present invention, wherein the Fig. 37 a sectional view of the Fig. 36 along the longitudinal axis A. In contrast to the previously described embodiments, the line nozzle 220 according to the Fig. 36 to 38 has a threaded portion 223, which may be an external thread or an internal thread, and which engages in the inner wall 142 of the hydraulic line 140.

[0098] When executing the Fig. 36 to 38, the tool engagement section 280 is designed differently, ie, the tool engagement section 280 has a concave area 281 for engagement with a corresponding tool. The line nozzle 220 according to the Fig. 36 to 38 has a tool engagement portion 290 which can be engaged with a tool known to those skilled in the art.

[0099] Fig. 38 shows the pipe fitting 220 according to the Fig. 36. As in Fig. As shown in Figure 38, the extension 222 has a threaded section 223 with a continuously increasing diameter. This has the advantage that as the extension is screwed into the hydraulic line, increasing pressure and contact force builds up between the extension 222 and the inner wall 142 of the hydraulic line 140, making the connection more stable and less sensitive to the pressures and temperatures prevailing in the hydraulic system.

[0100] In the described embodiments, the sleeve 160 can have a threaded portion 164 with an external thread which engages in the outer wall 143 of the hydraulic line 140 in order to form a force-fitting and form-fitting connection between the inner wall 162 of the sleeve and the outer wall 143 of the hydraulic line 340.

[0101] The Fig. 23 to 25 show the embodiment of the line connection 100 without the hydraulic line 140 in order to better illustrate the other features of the embodiment.

[0102] As in the Fig. As can be seen in Figures 23 to 25, the inner wall 162 of the sleeve 160 has a threaded section 164 designed as an internal thread. In contrast to an external thread, the internal thread in the threaded section 164 has larger contact surfaces 165. These larger contact surfaces 165 cause the internal thread 165 to deform the outer wall of the hydraulic line (not shown here) without cutting into it a permanent counter-profile. At least, the outer wall is cut or penetrated to a lesser extent. This can reduce or prevent the internal thread 165 from penetrating the outer wall of the hydraulic line (not shown here).

[0103] The Fig. 43 and Fig. 44 show a further embodiment of a line connection 300 according to the present invention. Unlike the above-described embodiments according to the preceding figures, the sleeve 360 ​​has on its inner wall 362 according to Fig. 43 has a ramp step structure 366 with ramp steps 367. The ramp step structure 366 is in a first axial section (in Fig. 43 right) of the inner wall 362 of the sleeve 360. This ramp step structure 366 deforms the outer wall 143 of the hydraulic line 140, so that a positive connection can be formed between the inner wall 362 of the sleeve 360 ​​and the outer wall 143 of the hydraulic line 140.

[0104] According to the embodiment of Fig. 43, the sleeve 360 ​​has a second axial section (in Fig. 43 left), which has a threaded portion 365 on the inner wall 462 of the sleeve. The thread of the threaded portion 365 cooperates with a threaded portion 325 provided in a first axial portion of the conduit stub 320 to form a threaded connection between the sleeve 360 ​​and the conduit stub 320.

[0105] According to the embodiment of Fig. 43, the sleeve 360 ​​has a recess 370 which ensures a certain elasticity of the sleeve 360 ​​when arranging the sleeve 360 ​​on the outer wall 143 of the hydraulic line 140.

[0106] According to the embodiment of Fig. 43, the ramp steps 324 of the line connector 420 and the ramp steps 368 of the sleeve 360 ​​are arranged symmetrically to one another along an axial direction of the hydraulic line 140 once the line connection is fully assembled. This allows for better compression through positive and / or frictional engagement of the hydraulic line 140 between the extension 322 of the line connector 320 and the inner wall 362 of the sleeve 360, because the ramp steps 367 of the sleeve 360 ​​and the ramp steps 324 of the extension 322 of the line connector 320 are not offset from one another, but rather come very close to one another at the tips of the ramp steps. The resulting small gap results in a high compression force on the outer wall 143 and the inner wall 142 of the hydraulic line 140.

[0107] Fig. 45 shows a further embodiment of the invention, which essentially corresponds to the embodiment of Fig. 43 and Fig. 44. In contrast to the embodiment according to the Fig. 43 and Fig. 44, the ramp steps 324 of the line nozzle 320 and the ramp steps 367 of the sleeve 360 ​​are arranged offset from one another along an axial direction A of the hydraulic line 140. This reduces the Fig. 9 the pressing force on the inner wall 142 or the outer wall 143 of the hydraulic line 140, so that the inner wall 142 or the outer wall 143 of the hydraulic line 140 is more prone to elastic deformation than plastic deformation. This design allows the use of a hydraulic line 140 with a greater wall thickness. Alternatively, this design can be used for systems with lower system pressures, such as hydraulic clutch actuation devices.

[0108] The Fig. 46 and Fig. 47 show another embodiment of a line connector 400 according to the present invention.

[0109] In contrast to the embodiments according to the Fig. 43 to 45, the sleeve has a press-fit section 468 with an inner diameter of the inner wall 462, which cooperates with a press-fit section 428 of the line nozzle 420 to form a press fit between the sleeve 460 and the line nozzle 420. Therefore, in contrast to the embodiments of Fig. 43 to 46 between the sleeve 460 and the pipe socket 420 no threaded connection is provided for the connection between the sleeve 460 and the pipe socket 420. Instead, in the embodiment according to the Fig. 46 to 47 a press connection or press fit between the sleeve 460 and the line nozzle 420. This press connection can be realized in that the diameter of the inner wall 462 of the sleeve 460 is smaller than the outer diameter of the line nozzle 420. The ramp steps 424 of the line nozzle 420 and the ramp steps 467 of the sleeve 460 are along an axial direction A of the hydraulic line 140 according to the design of the Fig. 43 to 44 arranged symmetrically to each other.

[0110] In the embodiment according to the Fig. 48, the ramp steps 424 of the line nozzle 420 and the ramp steps 467 of the sleeve 460 along an axial direction of the hydraulic line 140 are according to the design of the Fig. 45 offset from each other.

[0111] The Fig. 49 and Fig. 50 show another embodiment of a line connector 400 according to the present invention.

[0112] In contrast to the embodiments according to the Fig. 43 to 44 or 45, the sleeve 460 further comprises a stop 428, which is arranged between an end face of the hydraulic line 140 and an end face of the line connector 420 facing the end face of the hydraulic line 140. The ramp steps 424 of the line connector 420 and the ramp steps 467 of the sleeve 460 are arranged symmetrically to one another along an axial direction of the hydraulic line 540. However, they can also be arranged according to the design of Fig. 45 are arranged offset from one another. The stop 468 has the advantage that the hydraulic line 140 can be inserted into the sleeve 460 up to the stop, and then the line connector 420 with the extension 422 can be inserted into the hydraulic line 140. The stop 468 ensures that the hydraulic line 140 is fully inserted, so that a secure and durable line connection can be realized.

[0113] The Fig. 51 and Fig. 52 show another embodiment of a line connector 500 according to the present invention.

[0114] According to the Fig. 52, the line connector 520 and the sleeve 560 are formed in one piece. In this case, there is a receiving area for receiving the hydraulic line 140 between the ramp step structure 523 of the line connector 520 and the ramp step structure 566 of the sleeve 560. The ramp step structure 523 of the line connector 520 engages the inner wall 142 of the hydraulic line 140, and the ramp step structure 566 of the sleeve 560 engages the outer wall 143 of the hydraulic line 140. This creates both a positive connection between the inner wall 562 of the sleeve 560 and the outer wall 143 of the hydraulic line 140, as well as a positive connection between the line connector 120 and the inner wall 142 of the hydraulic line 140.

[0115] The line connection 500 according to the Fig. 51 and Fig. 52 is assembled in a single step by inserting the line socket 520 with the extension 522 into the hydraulic line 140 and simultaneously pushing it over the hydraulic line 140 with the sleeve 560. By inserting the line socket 520, a positive connection is formed between the line socket 520 and the inner wall 142 of the hydraulic line 140 by means of the ramp step structure 523 of the line socket 520. At the same time, by pushing the sleeve 560 over the hydraulic line 140, a positive connection is formed between the inner wall 562 of the sleeve 560 and the outer wall 143 of the hydraulic line 140 by means of the ramp step structure 566 of the sleeve 560, which engages in the outer wall 143 of the hydraulic line 140. The ramp steps 524 of the line nozzle 520 and the ramp steps 567 of the sleeve 560 are arranged offset from one another along an axial direction A of the hydraulic line 140.

[0116] In the embodiment according to the Fig. 53, the ramp steps 524 of the line nozzle 520 and the ramp steps 567 of the sleeve 560 are arranged symmetrically to one another along an axial direction A of the hydraulic line 140.

[0117] In the embodiment according to the Fig. 19 and Fig. 20, the pipe connector has a ball head with a through hole, which is connected to the passage. Such a pipe connector can be connected to a master valve by means of a hollow screw known to those skilled in the art, which is hydraulically connected to the master valve on the one hand and to the passage on the other.

[0118] The Fig. 54 to 57 show embodiments that correspond to a combination of some of the embodiments shown and described above. In these embodiments, the line connector 620 has an extension 622, on which both a ramp step structure 123 with at least one ramp step 124 or with a plurality of ramp steps 124 and a threaded portion 223 for engagement with the inner wall 142 of the hydraulic line 140 (not shown) are formed. The inner wall 142 of the hydraulic line 140 (not shown) can thus form both a positive connection with the ramp step structure 123 and a positive connection with the threaded portion 223, whereby a line connection can be provided that can withstand very high disengagement forces acting on the hydraulic line. In the embodiment of the Fig. 54 and Fig. 55, threaded section 223 is formed to the left of the ramp step structure 123, ie in the direction of the release force acting on the hydraulic line behind the ramp step structure 123. When executing the Fig. 54 and Fig. 55, threaded section 223 is formed to the right of the ramp step structure 123, ie in the direction of the release force acting on the hydraulic line in front of the ramp step structure 123. The Fig. 54 and Fig. 55 show an embodiment in which the sleeve 660 has a bead 668, which consists of or comprises a material that is so pliable or flexible that the bead 668 can be received in a groove 630 of the line socket 620 during assembly. The line socket 620 can also have a bead 631, which can be received in a groove 669 of the sleeve 660 during assembly. Due to this structure, the sleeve 660 and the line socket 620 are positively connected to one another along the axial direction A of the hydraulic line 140. The groove and bead can be designed accordingly, for example, circumferentially or only in sections that correspond to one another along the circumference.

[0119] The Fig. 58 to 59 show embodiments of the present invention with a sleeve 760 having a first threaded portion 771 for connecting the sleeve 760 to a threaded portion 125 of the line socket, and a second threaded portion 772 for connecting the inner wall 162 of the sleeve 760 to the outer wall 143 of the hydraulic line 140 (not shown). The pitch of the thread in the second threaded portion 772 is greater than the pitch of the thread in the first threaded portion 771. This has the advantage that the hydraulic line is pulled more strongly towards the line socket during assembly, whereby material can accumulate in the recess 770 formed between the first threaded portion 771 and the second threaded portion 772.

[0120] When executing the Fig. 58, the threads of the two threaded sections 771 and 772 have parallel threads, while in the design of the Fig. 59 opposing threads are provided. By providing opposing threads, the hydraulic line can no longer be easily detached or separated from the line connector. Therefore, lower pressing forces can be applied while still achieving consistent stability of the line connection at high temperatures or pressures.

[0121] The Fig. 60 and Fig. 61 show embodiments in which the sleeve 860 has a bead 868, which consists of or comprises a flexible, pliable material and which is received in a groove 830 of the line connector 820. The line connector 820 also has a bead 831, which is received in a groove 869 of the sleeve 860. Due to this structure, the sleeve 860 and the line connector 820 are positively connected to one another along the axial direction A of the hydraulic line 140. The groove and bead can each be designed accordingly, for example, circumferentially or only in sections corresponding to one another along the circumference.

[0122] Dier Fig. 60 and Fig. 62 show embodiments in which the sleeve 860 has a bead 873, and the line socket 820 has a groove 830 in which the bead 873 is received. Fig. 61 and Fig. 62 show designs in which the line connector 820 has a bead 831, and the sleeve 860 has a groove 874 in which the bead 831 is received. This design allows for a better form fit between the line connector 820 and the sleeve 860. Fig. 60 is instead of the bead 831 of the execution of Fig. 62 a threaded section 164 and instead of the groove 874 of the design of Fig. 62 a threaded section 225 is provided, which features correspond to the embodiments described above with the same reference numerals. Fig. 61 is instead of the bead 873 of the execution of Fig. 62 a threaded section 164 and instead of the groove 830 of the design of Fig. 62 a threaded section 225 is provided, which features correspond to the embodiments described above with the same reference numerals.

[0123] Of course, the invention is not limited to the illustrated embodiments. The above description is therefore not to be considered restrictive, but rather illustrative. The following claims are to be understood as meaning that a stated feature is present in at least one embodiment of the invention. This does not exclude the presence of further features. Where the claims and the above description define "first" and "second" embodiments, this designation serves to distinguish between two similar embodiments without establishing a priority.

Claims

[1] Line connection (100, 200, 300, 800), in particular for a hydraulic brake or clutch of steering-controlled vehicles, comprising: a pipe socket (120, 220, 320, 720, 820) with a passage (121, 221, 321, 821) and an extension (122, 222, 322, 822); a hydraulic line (140) with an inner wall (142) and an outer wall (143); and a sleeve (160, 260, 360, 760, 860) with an inner wall (162, 262, 362, 862) and an outer wall (163, 263, 363, 863); wherein the extension (122, 222, 322, 822) of the line socket (120, 220, 320, 820) is arranged on the inner wall (141) of the hydraulic line (140); characterized bythat the sleeve (160, 260, 360, 860) has a tool engagement section (180, 280, 380, 880) on the outer wall (161), and the inner wall (162, 262, 362, 862) of the sleeve (160, 260, 360, 860) is positively connected to the outer wall (143) of the hydraulic line (140) with respect to the axial direction (A) of the hydraulic line (140). [2] Line connection (300, 400, 500, 600, 800), in particular for a hydraulic brake or clutch of steering-controlled vehicles, comprising: a pipe socket (320, 420, 520, 620) with a passage (321, 421, 521, 621), and an extension (322, 422, 522, 622); a hydraulic line (140) with an inner wall (142) and an outer wall (143); wherein the extension (322, 422, 522, 622) of the line socket (320, 420, 520, 620) is arranged on the inner wall (141) of the hydraulic line (140); characterized bythat the line nozzle (320, 420, 520, 620) has a sleeve (360, 460, 560, 660) with an inner wall (362, 462, 562, 662) which is formed integrally with the line nozzle 320, 420, 520, 620, wherein the inner wall (362, 462, 562, 662) of the sleeve (360, 460, 560, 660) is positively connected to the outer wall (143) of the hydraulic line (140) with respect to the axial direction (A) of the hydraulic line (140). [3] The line connector (300, 400, 500, 600) according to claim 1 or 2, wherein the inner wall (362, 462, 562, 662) of the sleeve (360, 460, 560, 660) has a ramp step structure (366, 466, 566, 666). [4] Line connection (300, 400, 500, 600), in particular for a hydraulic brake or clutch of steering-controlled vehicles, comprising: a pipe socket (320, 420, 520, 620) with a passage (321, 421, 521, 621), and an extension (322, 422, 522, 622); a hydraulic line (140) with an inner wall (142) and an outer wall (143); wherein the extension (322, 422, 522, 622) of the line nozzle (320, 420, 520, 620) is arranged on the inner wall (141) of the hydraulic line (140); and Sleeve (360, 460, 560, 660) with an inner wall (362, 462, 562, 662), characterized by that the inner wall (362, 462, 562) of the sleeve (360, 460, 560) has a ramp step structure (366, 466, 566). [5] Line connection (100, 200) according to claim 1, wherein the inner wall (162, 262) of the sleeve (160, 260) has a threaded portion (165, 265) which is arranged on the outer wall (143) of the hydraulic line (143). [6] The line connector (100, 200) according to claim 5, wherein the threaded portion (265) has an M6 thread. [7] A line connection according to any one of the preceding claims, wherein the inner wall of the sleeve has a first axial portion and a second axial portion, wherein the first axial portion has a ramp step structure (123) and the second axial portion has a threaded portion (223). [8] Line connection (100, 200, 300, 400, 500) according to one of the preceding claims, wherein the inner wall (162, 262, 363, 363, 462, 562) of the sleeve (160, 260, 360, 460, 560) has an inner diameter which is smaller than the outer diameter of the outer wall (143) of the hydraulic line (140). [9] Line connection (100, 200, 300, 400, 500) according to claim 8, wherein the inner diameter of the inner wall of the sleeve (160, 260, 360, 460, 560) is in a range between approximately 4.8 mm and approximately 4.9 mm, and the outer diameter of the outer wall (143) of the hydraulic line (140) is approximately 5 mm or more. [10] Line connection (100, 200, 300, 400, 500) according to one of the preceding claims, wherein the extension (122, 222, 322, 422, 522) of the line socket (120, 220, 320, 420, 520) is arranged on the inner wall (141) of the hydraulic line (140) in a form-fitting and / or force-fitting manner with respect to the axial direction (A) of the hydraulic line (140). [11] Line connection (100, 300, 400, 500) according to claim 10, wherein the extension (122, 322, 422, 522) of the line nozzle (120, 320, 420, 520) has a ramp step structure (123, 323, 423, 523). [12] Line connection (100, 200, 300, 400, 500) according to one of the preceding claims, wherein the line nozzle (120, 220, 320, 420, 520) is part of a master device and / or a slave device of a hydraulic actuating device. [13] Line connection (100, 200, 300, 400) according to one of the preceding claims, wherein the line nozzle (120, 220, 320, 420) and the sleeve (160, 260, 360, 460) are connected to one another in a force-fitting and / or form-fitting manner. [14] The line connector (100, 200, 300, 400) according to claim 13, wherein the sleeve (860) has a bead (873), and the line socket (820) has a groove (830) in which the bead (873) is received, and / or wherein the line socket (820) has a bead (831), and the sleeve (860) has a groove (874) in which the bead (831) is received. [15] A pipe connection according to any one of claims 13 or 14, wherein the sleeve has a tooth structure and the pipe socket has a counter-tooth structure, wherein the tooth structure and the counter-tooth structure are connected to each other. [16] A cable connector (400) according to any one of the preceding claims, wherein the sleeve (460) has a stop (469). [17] Line connector (120) for use in a line connection (100), in particular for a hydraulic brake or clutch of steering-controlled vehicles, the line connector (120) comprising: a passage (121); an extension (122) with an outer wall having a ramp step structure (123); characterized by that the ramp step structure (123) has first ramp steps (124) with a first outer diameter and second ramp steps (127) with a second outer diameter, wherein the first outer diameter and the second outer diameter are different from each other. [18] The line fitting (120) according to claim 17, wherein the second outer diameter is larger than the first outer diameter, and wherein the second ramp steps (127) are arranged at the end of the extension (122) which is associated with the end of the hydraulic line (140) during assembly of the line fitting (120). [19] Line connection (100) according to one of claims 1 to 16 with a line nozzle (120) according to one of claims 17 or 18. [20] Method for assembling a line connection (100, 200), in particular for a hydraulic brake or clutch of steering-controlled vehicles, the method comprising the following steps: - attaching a sleeve (160, 260) with an inner wall (162, 262) to an outer wall (143) of a hydraulic line (140); - arranging an extension (122) of a line nozzle (120) in the hydraulic line (140) such that the extension (122, 222) of the line nozzle (120, 220) is arranged on an inner wall (141) of the hydraulic line (140); characterized by that the inner wall (162, 262) of the sleeve (160, 260) is positively connected to the outer wall (143) of the hydraulic line (140) with respect to the axial direction (A) of the hydraulic line (140). [21] Method for assembling a line connection (500), in particular for a hydraulic brake or clutch of steering-controlled vehicles, the method comprising the following steps: - arranging a line nozzle (520) with an extension (522) in a hydraulic line (140) such that the extension (522) of the line nozzle (520) is arranged on an inner wall (142) of the hydraulic line (140); characterized by that the line nozzle (520) has a sleeve (560) which, when the line nozzle (520) is arranged, is arranged over the hydraulic line (140) in such a way that a positive connection is formed between an inner wall (562) of the sleeve (560) and an outer wall (143) of the hydraulic line (140) with respect to the axial direction (A) of the hydraulic line (140). [22] The method according to claim 20 or 21, wherein arranging the line nozzle (120, 220, 520) comprises inserting the line nozzle (120, 220, 520) into the hydraulic line (140). [23] Method according to one of claims 20 to 22 for forming a line connection (100, 200, 300, 400, 500, 600) according to one of claims 1 to 16 or 19.

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