Connecting system and pressing tool for connecting system

Abstract

The invention relates to a connection system for connecting a first fluid line (2) to a second fluid line, comprising a connection sleeve (1) having an open first connection sleeve end (3) and an open second connection sleeve end (4), on which a first connection section (V1) is arranged, the first connection sleeve end (3) comprises a first connection section (V2) onto which the first fluid line can be pushed in order to connect the first fluid line (2) to the first connection sleeve end (3), and the second connection sleeve end (4) comprises a second connection section (V2) for connection to the second fluid line. According to the invention, the first connecting section (V1) comprises a cylindrical receiving section (5), on the outer circumferential surface of which a plurality of retaining projections (6) are arranged at a distance in the circumferential direction, said retaining projections each extending at least over a part of the length of the receiving section (5). The connection system further comprises a pressing sleeve (13) which can be arranged on the connection sleeve (1) in such a way that the pressing sleeve surrounds the receiving section (5) and forms a receiving space (AR) for receiving an end section of the first fluid line (2) between the receiving section (5) and an inner circumferential surface of the pressing sleeve (13) in the radial direction. The pressing sleeve (13) can be plastically deformed in the circumferential direction in each case in the region between the two retaining projections (6) by means of a pressing tool (16) in the radial direction.

Description

TECHNICAL FIELD

[0001] The invention relates to a connection system for connecting a first fluid line with a second fluid line, having a connection sleeve with an open first connection sleeve end and an open second connection sleeve end connected with the first connection sleeve end, a first connection section being provided on the connection sleeve, onto which the first fluid line can be pushed on in order to connect the first fluid line with the first connection sleeve end of the connection sleeve, and the second connection sleeve end comprising a second connection section for connecting with a second fluid line. The invention further relates to an application of the connection system and to a crimping tool for performing a connection process with the connection system. BACKGROUND

[0002] Connection systems of the type are used in very different industrial application fields in order to connect flow conducting members. For this purpose, a connection sleeve is usually provided, which can be connected on one end with a first fluid line, preferably a plastic tube. The connection sleeve can be connected on the opposite other end, for example by means of a suitable plug connector or a suitable joint, with a second fluid line, for example again a plastic tube. The connection with the first fluid line is usually fixed, i.e. after establishing the connection it can no longer be detached as a matter of course. The connection with the other fluid line can be fixed or detachable depending on the specific application.

[0003] Different embodiments are known for connecting the first fluid line with the connection sleeve. WO 2013 / 189740 A2, for example, shows a connection system of the type, in which the connection with the first fluid line takes place by means of a clamping sleeve which can be elastically deformed locally. SUMMARY

[0004] It is a particular object of the invention to provide a connection system which is simply constructed, can be manufactured cost-effectively and enables a reliable connection even with relatively poor quality of the pipe line. Furthermore, it is an object of the invention to provide a tool which is suitable for performing a connection process with the connection system.

[0005] The object is achieved by the connection system presented at the outset in that the first connection section of the connection sleeve comprises a cylindrical receiving section, on the outer circumferential face of which a plurality of holding projections are arranged at a distance in the circumferential direction, which holding projections each extend at least over a portion of the length of the receiving section, and in that the connection system further comprises a compression sleeve, which can be arranged on the connection sleeve in such a way that it surrounds the receiving section and forms a receiving space between the receiving section and the inner circumferential face of the compression sleeve in the radial direction for the end section of the first fluid line, which compression sleeve is configured to be plastically deformed in the radial direction in the circumferential direction in the region between two holding projections each in order to fix the first fluid line rotationally fixed on the first connection section. By the possibility of locally plastically deforming the compression sleeve in the circumferential direction, a rotation prevention can be achieved in such a way that the plastically deformed region of the compression sleeve cooperates substantially form-lockingly with the holding projections of the connection sleeve.

[0006] Preferably, at least one of the holding projections of the connection sleeve is elongated and extends at least over half the length of the receiving section. Alternatively or additionally, it is advantageous if the plurality of holding projections comprises at least two, preferably at least four, particularly preferably at least six, in particular at least eight holding projections. Furthermore, it can be advantageous if the holding projections are arranged uniformly distributed in the circumferential direction on the receiving section. Thereby, an improved rotation prevention can be achieved, since the compression sleeve can cooperate with the holding projections over a greater length.

[0007] Preferably, a circumferential groove is arranged between the receiving section and the first connection sleeve end of the connection sleeve, in which circumferential groove a sealing, preferably an O-ring or a profiled sealing, can be arranged or has been arranged. Thereby, an improved sealing between the connection sleeve and the first fluid line can be achieved.

[0008] On the first connection sleeve end of the connection sleeve, a centering section for centering the first fluid line can be arranged. Thereby, the push-on of the first fluid line can be simplified.

[0009] Between the receiving section and the first connection sleeve end of the connection sleeve, a widening section tapering in the direction of the first connection sleeve end, preferably conical or arched, can be arranged, which widening section is preferably arranged between the centering section and the circumferential groove. Thereby, the first fluid line can be spread out during the push-on, whereby the first fluid line can be pressed tightly against the receiving section.

[0010] Preferably, the connecting sleeve is made of plastic, and the retaining protrusion is integrally formed with the connecting sleeve. This allows for simple and low-cost manufacturing.

[0011] A defining section may be provided between the receiving section and the second connecting sleeve end of the connecting sleeve, the defining section constituting a stop for the first fluid line. Preferably, the defining section preferably includes a circumferential shoulder having a first end face facing the first connecting sleeve end and an opposite second end face facing the second connecting sleeve end, the retaining protrusion preferably connected to the circumferential shoulder. This prevents the first fluid line from being pushed too far and ensures proper positioning of the first fluid line.

[0012] The circumferential shoulder may include at least one fixing notch that extends circumferentially on a portion of the circumferential shoulder, connects the first end face and the second end face, and preferably opens outwards radially. The clamping sleeve may have at least one fixing tongue on its end facing the second connecting sleeve. In the assembled state, the fixing tongue extends through the at least one fixing notch of the circumferential shoulder toward the end of the second connecting sleeve and abuts against the second end face of the circumferential shoulder. This allows for a simple form-locking fixation of the clamping sleeve, ensuring it is securely held on the connecting sleeve without loss.

[0013] A retaining groove for accommodating a retaining tool can be provided between the defined section, particularly the circumferential shoulder, and the second connecting sleeve end of the connecting sleeve. This allows the connecting sleeve to be held in the fixed position during the push-fitting of the first fluid line. This can be particularly advantageous during the push-fitting onto the widened section.

[0014] The retaining groove preferably includes at least one connector for anti-rotationally receiving the retaining tool. This prevents the connecting sleeve from rotating relative to the retaining tool during the push-fit of the first fluid line.

[0015] The clamping sleeve is preferably made of a metallic material, preferably aluminum. Suitable metals possess good plasticity and high strength. To further improve plasticity, the clamping sleeve may, if necessary, have a material weakening structure in the deformation zone for deformation.

[0016] Preferably, the connection system according to the invention is used in such a way that the pipeline (preferably made of plastic) is pushed onto the first connection section of the connection sleeve until the end section of the first fluid pipeline is located in the receiving space, and the clamping sleeve is plastically deformed radially by the clamping tool in the region between the two retaining protrusions in the circumferential direction, so as to fix the first fluid pipeline to the first connection section in a non-rotational manner.

[0017] The aforementioned clamping tool is also used to achieve the above objective by means of a setting space for the connection system, the clamping tool having a plurality of clamping fingers distributed around the setting space in a circumferential direction, and the clamping fingers being configured to move in a direction toward the setting space and apply a clamping force to the clamping sleeve of the connection system set in the receiving space in a radial direction, thereby causing the clamping sleeve to undergo local plastic deformation in the circumferential direction by means of the clamping force.

[0018] Advantageously, the clamping tool includes a guide sleeve that surrounds the setting space circumferentially. The guide sleeve is configured such that each clamping finger of the clamping sleeve surrounding the connection system disposed within the setting space has a guide groove for guiding that corresponding clamping finger. This ensures reliable guidance of the clamping fingers and prevents undesirable deformation of the clamping sleeve. Advantageously, the distance between the inner circumferential surface of the guide sleeve and the outer circumferential surface of the clamping sleeve is minimized. The guide sleeve can, for example, be directly abutted against the clamping sleeve. The guide sleeve can also be replaceable if necessary, allowing a suitable guide sleeve to be positioned in the clamping tool according to the diameter of the clamping sleeve.

[0019] Preferably, the clamping tool includes a force generating device for generating the clamping force and a control unit for controlling the force generating device. This allows the connection process to be performed at least partially automatically. Attached Figure Description

[0020] To better understand this invention, the following drawings will be used to explain it in detail.

[0021] In the heavily simplified diagrams:

[0022] Figure 1 An exploded view of a connection system according to a preferred embodiment is shown;

[0023] Figure 2 A perspective view of the connection system with the assembled clamping sleeve is shown;

[0024] Figure 3A perspective view of a connection system with a first fluid line connected to it is shown.

[0025] Figure 4 A longitudinal sectional view of the connection system preceding the first fluid line in the pusher sleeve is shown;

[0026] Figure 5 A longitudinal sectional view of the connection system following the first fluid line in the pusher sleeve is shown.

[0027] Figure 6 A longitudinal sectional view of the connection system with the first fluid line connected is shown.

[0028] Figure 7 A perspective view of a clamping tool used to perform a connection process using a connection system is shown;

[0029] Figure 8 A cross-sectional view of the clamping tool is shown. Detailed Implementation

[0030] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names, and the disclosure contained throughout the specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures, and these location descriptions are applied semantically to the new location when the location changes.

[0031] exist Figure 1 An exploded view of a connection system according to a preferred embodiment of the present invention is shown. The connection system is configured to connect a first fluid line 2 to a second fluid line. The first fluid line 2 is... Figure 3 As shown in the figure. For simplicity, the second fluid line is not shown in the figure.

[0032] The connection system includes a connecting sleeve 1 having an open first connecting sleeve end 3 and an open second connecting sleeve end 4. The first connecting sleeve end 3 is connected to the second connecting sleeve end 4 via a flow channel. A first connecting section V1 is provided on the connecting sleeve 1, and a first fluid line 2 can be pushed onto this first connecting section to connect the first fluid line 2 to the first connecting sleeve end 3 of the connecting sleeve 1. Then, using... Figures 4 to 6 The execution process of the connection process should also be described in detail.

[0033] The second connecting sleeve end 4 includes a second connecting section V2 for connection to a second fluid line (not shown). In the illustrated embodiment, the second connecting section V2 is configured for connection to a known standardized insert sleeve conforming to the German Association of the Automotive Industry (VDA) standard. The insert sleeve in this case constitutes the second fluid line. In this case, the insert sleeve can be detachably connected to the connecting sleeve 1. Alternatively, the insert sleeve can be fixedly connected to another fluid line, for example. The structural design of the second connecting section V2 is, of course, only illustrative. The specific design of the second connecting section V2 can be varied depending on the second fluid line to be connected.

[0034] In the example shown, the connecting sleeve 1 is implemented in a straight manner, with the first connecting sleeve end 3 and the second connecting sleeve end 4 connected by a straight flow channel. However, in principle, the connecting sleeve 1 can also be curved, with the first connecting sleeve end 3 and the second connecting sleeve end 4 arranged at an opening angle relative to each other and connected via a curved flow channel. The connecting sleeve 1 can also be implemented in a bent manner, with the first connecting sleeve end 3 and the second connecting sleeve end 4 arranged at an opening angle relative to each other. In this case, the flow channel may comprise two straight channel sections at an opening angle to each other.

[0035] The first connecting section V1 of the connecting sleeve 1 includes a cylindrical receiving section 5. A plurality of retaining protrusions 6, spaced apart circumferentially, are provided on the outer circumferential surface of the receiving section 5. Each retaining protrusion 6 extends at least a portion of the length of the receiving section 5. The retaining protrusions 6 project radially outward from the outer circumferential surface of the receiving section 5.

[0036] The retaining protrusion 6 can be elongated, for example, and preferably extends at least half the length of the receiving section 5, preferably the entire length. The retaining protrusion 6 can each have a radially outward-facing contact surface 6a. In the pushed-fit state of the first fluid line 2, the contact surface 6a of the retaining protrusion 6 can contact the inner circumferential surface of the first fluid line 2. The contact surface 6a can be planar, or, if necessary, rounded radially, to better abut against the first fluid line 2.

[0037] Within the scope of this invention, the plurality of retaining protrusions 6 includes at least two retaining protrusions. However, it is advantageous to have at least four, preferably at least six, and particularly at least eight retaining protrusions 6. The illustrated embodiment of the connecting sleeve 1 exemplarily includes four retaining protrusions 6. The retaining protrusions 6 are preferably evenly distributed circumferentially on the receiving section 5. Of course, however, an uneven distribution is also conceivable in principle. If the connecting sleeve 1 is made of a suitable plastic, the retaining protrusions 6 can be advantageously integrally constructed with the connecting sleeve 1.

[0038] The connection system further includes a clamping sleeve 13, which can be mounted, and preferably fixed, on the connecting sleeve 1. Figure 1 Shown in the unassembled state and Figure 2 The image shows the assembly state on the connecting sleeve 1. The clamping sleeve 13 can be positioned on the connecting sleeve 1 such that it surrounds the receiving section 5 and forms a receiving space AR between the receiving section 5 of the connecting sleeve 1 and the inner circumferential surface of the clamping sleeve 13 for receiving the end section of the first fluid pipeline 2, as shown in... Figure 4 As can be seen in the image, the clamping sleeve 13 is constructed in a substantially cylindrical shape. The length of the clamping sleeve 13 is preferably at least the length of the receiving section 5.

[0039] The clamping sleeve 13 is configured to be plastically deformed radially in the region between the two retaining protrusions 6 in the circumferential direction using a suitable clamping tool (not shown) to secure the first fluid line 2 to the first connecting section V1 in an anti-rotational manner. Then, by means of... Figure 7 and Figure 8 A preferred embodiment of the clamping tool will also be described in detail. Figure 3 The diagram shows a connection system with the connected first fluid line 2. The deformation region 25 on the clamping sleeve 13, plastically deformed by the clamping tool, is... Figure 3 As shown in the image.

[0040] The clamping sleeve 13 is preferably made of a metal material with sufficient strength that can be fully deformed, such as aluminum. If necessary, the clamping sleeve 13 may also have a material weakening structure in the deformation region 25 to improve plastic deformation.

[0041] With the help of Figures 4 to 6 This describes an advantageous application of a connection system for connecting a first fluid line 2. Firstly, the first fluid line 2 (preferably made of plastic tubing) can be pushed onto the first connection section V1 of the connection sleeve 1 via the end 3 of the first connection sleeve, as in... Figure 4 The corresponding arrows indicate this. To simplify the push sleeve, a centering section 8 for centering the first fluid pipeline 2 can be provided on the first connecting sleeve end 3 of the connecting sleeve 1. The centering section 8 is also... Figure 1 As can be seen, the first fluid line 2 can be pushed so far that the end section of the first fluid line 2 is accommodated in the accommodating space AR formed between the clamping sleeve 13 and the accommodating section 5, and the clamping sleeve 13 surrounds the end section of the first fluid line 2, as shown in Figure 5 As can be seen in the text.

[0042] To simplify the correct positioning of the first fluid line 2, a defining section can be provided between the receiving section 5 and the second connecting sleeve end 4 of the connecting sleeve 1. This defining section constitutes a stop for the first fluid line 2. The defining section may, for example, include a circumferential shoulder 10 having a first end face 10a facing the first connecting sleeve end 3 (see...). Figure 1 ) and the opposite, second end face 10b facing the second connecting sleeve end 4 (see Figure 2 and Figure 4 and Figure 5 In this case, the first fluid line 2 can be pushed onto the first connecting section V1 as far as possible until the end side of the first fluid line 2 facing the end 4 of the second connecting sleeve abuts against the first end face 10a of the circumferential shoulder 10. For higher stability, the protrusion 6 can be connected to the circumferential shoulder 10 in the direction of the end 4 of the second connecting sleeve, as in the same way. Figure 1 As can be seen in the text.

[0043] One or more fixing recesses 11 for fixing the clamping sleeve 13 may also be provided on the circumferential shoulder 10. The fixing recesses 11 extend along the circumferential direction on a portion of the circumferential shoulder 10 and respectively connect to the first end face 10a and the second end face 10b of the circumferential shoulder 10. Furthermore, the fixing recesses 11 open outwards in the radial direction, as shown in... Figure 1 As can be seen in the image. This can be advantageous in order to simplify assembly. In principle, the fixed notch 11 can also have a closed perimeter and thus be defined radially outward by a circumferential shoulder 10.

[0044] The clamping sleeve 13 may have one or more deformable fixing tongues 14 provided on the clamping sleeve end 13a facing the second connecting sleeve end 4, such as in Figure 1 As can be seen in the image. The clamping sleeve 13 can be fixed to the connecting sleeve 1 in such a way that the fixing tongue 14 extends through a fixing recess 11 of the circumferential shoulder 10 toward the end 4 of the second connecting sleeve and abuts against the second end face 10b of the circumferential shoulder 10. This is in Figure 2 and Figure 3 As can be seen, the number of fixing tongues 14 can be at least two, preferably at least four. The fixing tongues 14 can be evenly distributed on the clamping sleeve 13 in the circumferential direction. The number of fixing tongues 14 can correspond to the number of fixing recesses 11 of the circumferential shoulder 10.

[0045] For example, the clamping sleeve 13 can be pre-assembled onto the connecting sleeve 1. For this purpose, a fixing tongue 14 (see [reference needed]) with an undeformed shape, i.e., extending parallel to the axis of the clamping sleeve 13, can be used. Figure 1The clamping sleeve 13 is pushed onto the first connecting section V1 until the clamping sleeve end 13a facing the second connecting sleeve end 4 abuts against the first end face 10a of the circumferential shoulder 10. Here, the undeformed fixing tongue 14 extends parallel to the central axis of the connecting sleeve 1 through the fixing recess 11. Finally, the fixing tongue 14 can be bent inward until the end section of the fixing tongue 14 abuts against the second end face 10b of the circumferential shoulder 10, as in Figure 2 and Figure 3 As can be seen in the image. Thus, the clamping sleeve 13 can be secured to the connecting sleeve 1 in a shape-locking manner and substantially prevent loss. To deform the retaining tongue 14, a suitable tool (not shown) can be used, for example.

[0046] Between the receiving section 5 and the first connecting sleeve end 3 of the connecting sleeve 1, a widening section 9, preferably tapered or arched, that tapers toward the first connecting sleeve end 3, may be provided (see...). Figure 1 and Figure 4 The first fluid line 2 can be pushed onto the receiving section 5 via the widening section 9. This opens the first fluid line 2 and makes it very tightly abut against the receiving section 5, particularly against the contact surface 6a that holds the protrusion 6. For this purpose, the first fluid line 2 should naturally have sufficiently large plastic or elastic deformability. "Arching" can mean that the outer circumferential surface of the widening section 9 extends in an arc shape, the arc extending radially outward (convex) or inward (concave).

[0047] In order to apply a sufficiently high retaining force to the connecting sleeve 1 during the pushing of the first fluid line 2 (especially during the opening of the first fluid line 2 by the widening section 9), it is advantageous to provide at least one retaining groove 12 for accommodating a suitable (not shown) retaining tool between the defining section, particularly the circumferential shoulder 10 and the end 4 of the second connecting sleeve. Figure 1 , Figure 3 and Figure 4 As shown in the figure. The retaining groove 12 can extend in the circumferential direction on a portion of the periphery of the connecting sleeve 1, preferably extending around the entire periphery.

[0048] Another advantage is that the retaining groove 12 preferably includes at least one connecting strip 26 for anti-rotationally receiving the retaining tool. In the example shown, the retaining groove 12 is divided into two retaining grooves, for example, by two connecting strips 26 that are diametrically opposed. One of the connecting strips 26 is in Figure 3 As can be seen, the connecting sleeve 1 can be prevented from rotating during the push-fit of the first fluid line 2 by means of the connecting bar 26. In addition, the connecting bar 26 can be advantageous in order to give the connecting sleeve 1 a high degree of rigidity.

[0049] Another advantage is that a circumferential groove 7 is provided between the receiving section 5 and the end 3 of the first connecting sleeve, in which a suitable sealing element 15, preferably an O-ring or a shaped seal, can be provided or is already provided. Figure 1 The image shows the circumferential groove 7 without seal 15. Seal 15 is in... Figures 4 to 6 As can be seen, the widened section 9 is preferably located between the centering section 8 and the circumferential groove 7. A seal can be formed between the first fluid line 2 and the connecting sleeve 1 by means of the seal 15. The O-ring has a substantially circular cross-section, while the shaped seal also has other cross-sections, such as elliptical or polygonal. The shaped seal may also have one or more sealing lips on its periphery if necessary.

[0050] Preferably, the length of the clamping sleeve 13 is determined such that it not only surrounds the receiving section 5, but also additionally surrounds the circumferential groove 7, or particularly the seal 15 disposed therein. Thus, the seal 15 can be protected from damage and contamination before the first fluid line 2 is assembled.

[0051] If the first fluid line 2 is in the correct position (e.g., in...) Figure 5 As shown), the clamping sleeve 13 can then be used with a suitable (in Figure 5 (Not shown) The clamping tool undergoes radial plastic deformation in the region between the two retaining protrusions 6 when viewed circumferentially. For this purpose, a sufficiently large clamping force FP can be applied to the clamping sleeve 13 using the clamping tool, such as in... Figure 5 As exemplarily indicated by the two arrows, the first fluid line 2 can thus be fixed anti-rotationally to the first connecting section V1.

[0052] exist Figure 6 The diagram shows a connection system with the connected first fluid line 2. The clamping sleeve 13 is shown in a deformed state, showing the deformed area 25 created by the clamping tool. (See diagram below.) Figures 4 to 6 As can be seen, it is advantageous that the diameter of the cylindrical receiving section 5 (i.e., the area between the protrusions 6) is smaller than the maximum diameter of the widened section 9 and / or the diameter of the sealing section where the circumferential groove 7 is located. Thus, the first fluid line 2 can be held substantially form-locked axially by the section compressed by the compression sleeve 13 in the deformable region 25. This, of course, presupposes sufficient deformability of the first fluid line 2, which is typically the case in plastic tubes.

[0053] With the help of Figure 7 and Figure 8 The clamping tool 16 of a preferred embodiment of the invention is described below. The clamping tool 16 is configured to perform the described connection process using the connection system according to the invention.Figure 7 A perspective view of the clamping tool 16 is shown and Figure 8 A cross-sectional view of the clamping tool 16 is shown.

[0054] The clamping tool 16 includes a setting space 17 for setting the connection system, i.e., the connecting sleeve 1 including the clamping sleeve 13 at its center, such as in Figure 7 As can be seen in the image. The clamping tool 16 also includes a plurality of clamping fingers 18 distributed around the space 17 in a circumferential direction. The clamping fingers 18 are movable and can be moved in the direction of the space 17 (and in the opposite direction). The clamping fingers 18 are configured to apply a clamping force FP to the clamping sleeve 13 of the connecting sleeve 1 disposed in the space 17 in a radial direction, as shown in the image. Figure 8 As indicated in the text. As already mentioned, the clamping sleeve 13 can be locally plastically deformed by the clamping force FP to form the deformation zone 25 (see...). Figure 3 and Figure 6 ).

[0055] The number of clamping fingers 18 preferably corresponds to the number of retaining protrusions 6 on the connecting sleeve 1. This allows for simultaneous force application across all retaining protrusions 6, thereby enabling relatively uniform loading of the clamping sleeve 13 in the circumferential direction. In the illustrated embodiment, the number of clamping fingers 18 is exemplary only four. The clamping fingers 18 can be distributed around the periphery of the mounting space 17 at constant intervals. However, in principle, a smaller number of clamping fingers 18 may also be provided. In this case, the force application can be performed sequentially. For example, the connecting sleeve 1 can be rotated after each force application of the number of clamping fingers 18 to align the number of clamping fingers 18 with the undeformed section of the clamping sleeve 13.

[0056] According to a preferred embodiment, the clamping tool 16 has a guide sleeve 19 that surrounds the space 17 in a circumferential direction. For example, in Figure 8 As can be seen, the connection system can be arranged in the setting space 17 such that the guide sleeve 19 surrounds the clamping sleeve 13, which in turn surrounds the receiving section 5 of the connecting sleeve 1. Each clamping finger 18 on the guide sleeve 19 is provided with a guide groove 20, which connects the outer circumferential surface and the inner circumferential surface of the guide sleeve 19. The guide sleeve 19 is preferably sized such that the distance between the inner circumferential surface of the guide sleeve 19 and the outer circumferential surface of the clamping sleeve 13 is as small as possible. The guide sleeve 19 can, for example, rest directly against the clamping sleeve 13.

[0057] The guide groove 20 is configured to guide the clamping finger 18 in the radial direction. On the one hand, the guide sleeve 19 can prevent unintended deformation of the clamping sleeve 13 during the connection process, as the guide sleeve 19 defines the clamping sleeve 13 in the radial direction. This ensures that the material of the clamping sleeve 13 does not shift during the application of the force, preventing the formation of wrinkles in the clamping sleeve 13. On the other hand, the guide sleeve 19 can stabilize the clamping finger 18 during movement.

[0058] As in Figure 7 As shown, the clamping tool 16 may, for example, have a (generally cylindrical) base 23. A plurality of radially extending guide grooves may be provided on the (here, the upper) end side 23a of the base 23, in which guide sliders 24 are movably disposed respectively. A clamping finger 18 may be provided on the radially inward end of the guide slider 24. The clamping finger 18 may, for example, be constructed as a separate component, which may be fixed (e.g., threadedly connected) to the guide slider 24 in a suitable manner. Of course, the clamping finger 18 may also, for example, be integrally constructed with the guide slider 24.

[0059] To perform the connection process, the connecting sleeve 1 (preferably including a pre-assembled clamping sleeve 13 and, if necessary, having a first fluid line 2 with a push-fit, for example, according to...) can be firstly connected. Figure 5 (As illustrated in the diagram) the second connecting sleeve end 4 is first inserted axially into the setting space 17 of the clamping tool 16. In the illustrated embodiment, the movement can proceed toward the end side 23a of the base 23. During the insertion, the free end of the clamping finger 18 is preferably located radially outside the setting space 17, for example, in the region of the guide groove 20 of the guide sleeve 19, in the release position.

[0060] Of course, it is also possible to first place the connecting sleeve 1 (preferably including the pre-assembled clamping sleeve 13) in the setting space 17 of the clamping tool 16 and then push the first fluid line 2 onto the first connecting section V1 of the connecting sleeve 1. In order to apply a sufficiently large pushing force to the first fluid line 2, a suitable tool (not shown) may be provided if necessary.

[0061] The connecting sleeve 1 can be positioned relative to the clamping tool 16 in the axial direction such that the clamping sleeve 13 is located in the area of ​​the clamping finger 18. For example, proper positioning in the axial direction can be ensured by a suitable, preferably adjustable stop (not shown).

[0062] Furthermore, the connecting sleeve 1 can be oriented circumferentially relative to the clamping tool 16 such that the clamping fingers 18 are respectively located between the two retaining protrusions 6 of the connecting sleeve 1. Correct orientation can be achieved, for example, by a suitable positioning device (not shown). This positioning device may have optical markings on the clamping tool 16, which can be aligned with markings or features on the connecting sleeve 1. However, the positioning device can also be mechanically constructed, for example, by engaging, the positioning protrusions of the connecting sleeve 1 with the positioning grooves of the clamping tool 16. However, the positioning device can also have a suitable sensing mechanism.

[0063] The clamping tool 16 may also include a suitable force generating device 21 for generating a clamping force FP and a control unit 22 for controlling the force generating device 21. The force generating device 21 and the control unit 22 are in... Figure 7 The symbolic designation is merely indicated, and the device may be constructed in a suitable manner. The force generating device 21 may, for example, include multiple suitable electrically controllable actuators, such as hydraulic cylinders, pneumatic cylinders, etc. Control unit 22

[0064] This may include suitable hardware and / or software.

[0065] If necessary, one or more suitable sensors may be provided for detecting measurement parameters of the connection process, and these sensors may communicate with the control unit 22. For example, it is conceivable to provide position sensors or displacement sensors for detecting radial movement for one or more clamping fingers 18. Alternatively or additionally, suitable force sensors may also be provided for detecting clamping force FP. The control unit 22 can use the detected measurement values ​​to control the connection process. For example, the connection process may be terminated when a predetermined clamping force FP or a predetermined position of the clamping finger 18 is reached. Suitable sensing mechanisms, such as angle measuring devices, may also be provided to ensure the correct circumferential position of the connecting sleeve 1 relative to the clamping tool 16.

[0066] The embodiments illustrate possible implementation variations. It should be noted here that the invention is not limited to the specific implementation variations shown herein. Rather, different combinations of the various implementation variations are possible, and such variations are based on the teachings of the specific invention and are within the capabilities of those skilled in the art.

[0067] The scope of protection is defined by the claims. However, the specification and drawings are considered for the purpose of interpreting the claims. Individual features or combinations of features in the different embodiments shown and described can be independent, inventive solutions in themselves. The task based on these independent, inventive solutions can be derived from the specification.

[0068] The full description of the numerical range in the specific specification should be understood as follows: the numerical range together includes any and all sub-ranges that arise therefrom. For example, the description of 1 to 10 should be understood as including all sub-ranges starting from the lower limit of 1 and the upper limit of 10. That is, all sub-ranges that start with a lower limit of 1 or greater and end with an upper limit of 10 or less, such as 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

[0069] The regulations stipulate that, in order to better understand the construction, the components are shown partially out of proportion and / or enlarged and / or reduced.

[0070] List of reference numerals

[0071] 1 Connecting sleeve

[0072] 2 First fluid pipeline

[0073] 3. First connecting sleeve end

[0074] 4. End of the second connecting sleeve

[0075] 5-section accommodation

[0076] 6. Maintain the protrusion

[0077] 6a contact surface

[0078] 7 circumferential grooves

[0079] 8-point centering section

[0080] 9 Widening Sections

[0081] 10-week convex shoulder

[0082] 10a First end face

[0083] 10b Second End Face

[0084] 11 Fixed notch

[0085] 12. Maintain the groove

[0086] 13 clamping sleeve

[0087] 14 Fixed Tongue Plate

[0088] 15 seals

[0089] 16 clamping tools

[0090] 17. Setting Space

[0091] 18 Pressing fingers

[0092] 19 Guide Sleeve

[0093] 20 guide grooves

[0094] 21 Force generating device

[0095] 22 control units

[0096] 23 matrix

[0097] 23a end side

[0098] 24 guide sliders

[0099] 25 Deformation Area

[0100] 26 splices

[0101] V1 First Connection Section

[0102] V2 Second Connecting Section

[0103] FP clamping force

[0104] AR storage space

Claims

1. A connection system for connecting a first fluid line (2) to a second fluid line, the connection system having a connection sleeve (1) having an open first connection sleeve end (3) and an open second connection sleeve end (4) connected to the first connection sleeve end (3), a first connection section (V1) provided on the connection sleeve (1), the first fluid line (2) being push-fitted onto the first connection section to connect the first fluid line (2) to the first connection sleeve end (3) of the connection sleeve (1), and the second connection sleeve end (4) including a second connection section (V2) for connecting to the second fluid line, characterized in that, The first connecting section (V1) of the connecting sleeve (1) includes a cylindrical receiving section (5), on the outer circumferential surface of the receiving section (5) are a plurality of retaining protrusions (6) spaced apart in the circumferential direction, the retaining protrusions extending at least a portion of the length of the receiving section (5), and the connecting system further includes a clamping sleeve (13), the clamping sleeve (13) being disposed on the connecting sleeve (1) such that the clamping sleeve (13) surrounds the receiving section (5) and forms a receiving space (AR) in the radial direction between the receiving section (5) and the inner circumferential surface of the clamping sleeve (13) for receiving the end section of the first fluid line (2), the clamping sleeve (13) being configured to be plastically deformed in the radial direction in the region between the two retaining protrusions (6) in the circumferential direction, so as to fix the first fluid line (2) to the first connecting section (V1) in a non-rotational manner.

2. The connection system according to claim 1, characterized in that, At least one of the retaining protrusions (6) of the connecting sleeve (1) is elongated and extends at least half the length of the receiving section (5).

3. The connection system according to claim 1 or 2, characterized in that, The plurality of retaining protrusions (6) include at least two, preferably at least four, and particularly preferably at least six retaining protrusions (6).

4. The connection system according to any one of claims 1 to 3, characterized in that, The retaining protrusions (6) are evenly distributed in the circumferential direction on the receiving section (5).

5. The connection system according to any one of claims 1 to 4, characterized in that, A circumferential groove (7) is provided between the receiving section (5) and the first connecting sleeve end (3) of the connecting sleeve (1), and a seal (15), preferably an O-ring or a molded seal, can be provided or has been provided in the circumferential groove.

6. The connection system according to any one of claims 1 to 5, characterized in that, A centering section (8) for centering the first fluid pipeline (2) is provided on the first connecting sleeve end (3) of the connecting sleeve (1).

7. The connection system according to any one of claims 1 to 6, characterized in that, A tapered or arched widening section (9) is provided between the receiving section (5) and the first connecting sleeve end (3) of the connecting sleeve (1), which tapers toward the first connecting sleeve end (3). The widening section (9) is preferably located between the centering section (8) and the circumferential groove (7).

8. The connection system according to any one of claims 1 to 7, characterized in that, The connecting sleeve (1) is made of plastic, and the retaining protrusion (6) is integrally constructed with the connecting sleeve (1).

9. The connection system according to any one of claims 1 to 8, characterized in that, A defining section is provided between the receiving section (5) and the second connecting sleeve end (4) of the connecting sleeve (1), the defining section constituting a stop for the first fluid pipeline (2).

10. The connection system according to claim 9, characterized in that, The defined section includes a circumferential shoulder (10), which has a first end face (10a) facing the first connecting sleeve end (3) and a second end face (10b) facing the second connecting sleeve end (4), and the retaining protrusion (6) is preferably connected to the circumferential shoulder (10).

11. The connection system according to claim 10, characterized in that, The circumferential shoulder (10) includes at least one fixing notch (11) that extends along the circumferential direction on a portion of the circumferential shoulder (10), connects the first end face (10a) and the second end face (10b), and preferably opens outward in the radial direction. The clamping sleeve (13) is provided with at least one fixing tongue (14) on the clamping sleeve end (13a) facing the second connecting sleeve end (4). In the assembled state, the fixing tongue extends through the at least one fixing notch (11) of the circumferential shoulder (10) toward the second connecting sleeve end (4) and abuts against the second end face (10b) of the circumferential shoulder (10).

12. The connection system according to any one of claims 9 to 11, characterized in that, A retaining groove (12) for accommodating a retaining tool is provided between the defined section, particularly the circumferential shoulder (10) and the end of the second connecting sleeve (4).

13. The connection system according to claim 12, characterized in that, The retaining groove (12) includes at least one connector (26) for anti-rotationally receiving the retaining tool.

14. The connection system according to any one of claims 1 to 13, characterized in that, The clamping sleeve (13) is made of metal material, preferably aluminum.

15. The application of the connection system according to any one of claims 1 to 14, characterized in that, The first fluid line (2), preferably a plastic tube, is pushed onto the first connecting section (V1) of the connecting sleeve (1) until the end section of the first fluid line (2) is located in the receiving space (AR), and the clamping sleeve (13) is plastically deformed in the radial direction in the area between the two retaining protrusions (6) in the circumferential direction by the clamping tool (16) so as to fix the first fluid line (2) on the first connecting section (V1) of the connecting sleeve (1) in an anti-rotational manner.

16. A clamping tool (16) for performing a connection process using the connection system according to any one of claims 1 to 14, characterized in that, The clamping tool (16) includes a setting space (17) for setting the connection system. The clamping tool (16) has a plurality of clamping fingers (18) which are distributed around the setting space (17) in a circumferential direction. The clamping fingers (18) are configured to move toward the setting space (17) and apply a clamping force (FP) to the clamping sleeve (13) of the connection system set in the setting space (AR) in a radial direction. The clamping force enables the clamping sleeve (13) to be locally plastically deformed in the circumferential direction.

17. The clamping tool (16) according to claim 16, characterized in that, The clamping tool (16) includes a guide sleeve (19) that surrounds the setting space (17) in the circumferential direction. The guide sleeve (19) is configured such that a clamping sleeve (13) surrounds the connecting sleeve (1) set in the setting space (17). On the guide sleeve (19), each clamping finger (18) is provided with a guide groove (20) for guiding the corresponding clamping finger (18).

18. The clamping tool (16) according to claim 16 or 17, characterized in that, The clamping tool (16) includes a force generating device (21) for generating the clamping force (FP) and a control unit (22) for controlling the force generating device (21).

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