Press ring, press tool, adapter element, press device and system

Abstract

A system having a press ring, a press tool, an adapter element for the press tool, a press device including a motorized drive and a press tool, and an adapter element for pressing a press fitting with the press ring, wherein the press ring has at least two different pairs of receiving elements for connecting to a corresponding pair of connecting elements of a different press tool, and the press tool has at least two different pairs of connecting elements for connecting to a corresponding pair of receiving elements of a different press ring, respectively, and the press tool and the adapter element for the press ring each have a pair of connecting elements for connecting to a corresponding pair of connecting elements of the press tool and a pair of connecting elements for connecting to a corresponding pair of receiving elements of the press ring, respectively.

Description

[Technical Field]

[0001] The present invention relates to a press ring, a press tool, an adapter element for a press tool, an adapter element for a press ring, a press device with an electric drive for a press tool according to the invention, a system with an adapter element according to the invention for a press tool for pressing a press fitting by means of a press ring and a system with an adapter element according to the invention for a press ring. [Background technology]

[0002] It is known to use a press ring when pressing a press fitting, particularly for connecting tubular components by cold forming. The press ring has at least two segments connected to each other in a hinge-like manner and, in turn, a receiving element for connecting to a press tool. The press ring is connected to a press device by a press tool, which also has press jaws with connecting elements. This allows the press device to apply a mechanical pressing force to the press ring to press the press fitting. In particular, this is an electrohydraulic press device, where the press jaws of the press tool are moved toward each other, and the movement of the press jaws is transmitted to the press ring, closing the press ring and thereby reducing the inner radius of the press ring and pressing the press fitting against the inner radius of the press ring. Summary of the Invention [Problem to be solved by the invention]

[0003] Press rings vary from press fitting to press fitting and have an appropriate inner radius. The press tool must also be adapted to each press ring and press fitting. On the one hand, this adaptation must be geometrically correct, i.e., the closing distance of the press tool must match the closing distance of the press ring. On the other hand, the press tool must be able to transmit the closing force required to close the press ring on the press fitting.

[0004] Additionally, the shape, size, and location of the receiving element of the press ring and the connecting element of the press tool must match one another so that a connection can be established or maintained between the press tool and the press ring until the closure force required to compress the press fitting is transmitted.

[0005] For example, a press ring having a connecting bolt arranged as a receiving element in each of the opposing segments can be connected to a press tool having two press jaws provided with suitable undercuts as connecting elements, which engage and connect the connecting bolts.

[0006] Another example of matching receiving or connecting elements on the press ring or press tool is a receiving element on the press ring having a spherical recess and a connecting element on the press tool having a corresponding appropriate spherical segment.

[0007] These are just two examples from several existing configurations of receiving or connecting elements for suitable press ring and press tool combinations.

[0008] Therefore, the press fitting, press ring and press tool must match one another geometrically with respect to the closing path and / or with respect to the closing force applied to the press fitting, in particular with respect to the shape, dimensions and position of the respective receiving or connecting elements of the press ring and press tool combination used, in order to ensure complete and damage-free pressing of the press fitting.

[0009] However, the receiving elements of existing press rings can only be suitably connected to a specific pair of connecting elements of a corresponding press tool for pressing the press fitting, which significantly limits the compatibility and usability of press fittings, press rings, and press tools equipped with various receiving and connecting members.

[0010] SUMMARY OF THE INVENTION It is an object of the present invention to provide a press ring, a press tool, and an adapter element for a press tool or press ring that increases the interchangeability or usability of different press rings and press tools. [Means for solving the problem]

[0011] This object is achieved by a press ring according to claim 1, a press tool according to claim 7, an adapter element for a press tool according to claim 11, an adapter element for a press ring according to claim 13, a press device according to claim 15, a system according to claim 16, and a system according to claim 17.

[0012] A first aspect of the present invention relates to a press ring for pressing a press fitting, wherein the press ring has at least two segments movably connected to one another, the segments being movable from an open position to a closed position.

[0013] Further, the press ring includes at least a first pair of receiving elements and a second pair of receiving elements, the first pair of receiving elements being disposed on the first segment and the last segment of the press ring, each configured to connect to a pair of connecting elements of the first press tool.

[0014] Additionally, a second pair of receiving elements are disposed on the first segment and the last segment of the press ring and are configured to connect to a pair of connecting elements of a second press tool, respectively.

[0015] Here, according to the present invention, the first pair of receiving elements is different from the second pair of receiving elements.

[0016] This allows the press ring to be connected to more than one press tool, in particular to two different press tools having different sets of connecting elements for pressing press fittings, thereby ensuring compatibility of the press ring with more than one press tool and therefore usability with different types of press tools.

[0017] Preferably, the number of different pairs of receiving elements is two or more, which allows the press ring to be connected to connecting elements of two or more types of press tools, further improving the usability of the press ring.

[0018] Preferably, the first pair of receiving elements are connecting bolts and / or the second pair of receiving elements are recesses.

[0019] Preferably, the first pair of receiving elements are recesses and the second pair of receiving elements are recesses.

[0020] Preferably, the recesses of the first pair of receiving elements are spherical or partially spherical recesses and / or the recesses of the second pair of receiving elements are disk-shaped recesses, or vice versa. Alternatively, the second pair of receiving elements are also spherical or partially spherical recesses.

[0021] Preferably, the recesses of the first pair of receiving elements are positioned separately from the recesses of the second pair of receiving elements.

[0022] Preferably, the recesses of the first pair of receiving elements are arranged within the recesses of the second pair of receiving elements, in particular where the recesses of the first pair of receiving elements have smaller dimensions than the recesses of the second pair of receiving elements.

[0023] Preferably, the recesses of the first pair of receiving elements and the recesses of the second pair of receiving elements have a common lateral boundary, whereby when the first pair of receiving elements are connected to the first pair of connecting elements of the press tool, the common lateral boundary acts as a movement limit for the press tool, while, in particular, when the second pair of receiving elements are connected to the first pair of connecting elements of the press tool, the press tool and the press ring can rotate relative to each other.

[0024] Preferably, the press ring is a press collar, especially having two or more segments.

[0025] A second aspect of the invention relates to a press tool for pressing a press fitting by means of a press ring, wherein the press tool has two press jaws movable towards each other from an open position to a closed position for pressing.

[0026] Additionally, the press jaws include at least a first pair of connecting elements and a second pair of connecting elements.

[0027] Further, each of the first pair of connecting elements is configured to connect to a pair of receiving elements of a first press ring, and each of the second pair of connecting elements is configured to connect to a pair of receiving elements of a second press ring different from the first press ring.

[0028] Here, according to the present invention, the first pair of connecting elements is different from the second pair of connecting elements.

[0029] As a result, the press tool can be connected to more than one type of receiving element of a press ring for pressing a press fitting, ensuring usability of the press tool for different press rings.

[0030] Preferably, the number of sets of different receiving elements is greater than or equal to 2. This further improves the usability of the press tool for two or more different types of receiving elements or press rings.

[0031] Preferably, at least one, in particular the first pair of connection elements is an undercut for connection to a connection bolt of the press ring.

[0032] Preferably, at least one pair, especially the second pair, of connecting elements are ball or spherical segments for connection to recesses in the press ring.

[0033] Preferably, the undercuts of the first pair of connecting elements are formed in the ball or spherical segments of the second pair of connecting elements, such that the ball or spherical segments have a deviation from a spherical shape to form the undercuts.

[0034] A third aspect of the present invention relates to an adapter element for a press tool, wherein the adapter element includes a first pair of connecting elements for connecting to a pair of connecting elements of the press tool.

[0035] The adapter element further includes a second pair of connecting elements for connecting to a corresponding pair of receiving elements of the press ring, such that when the adapter element is connected to the press tool on the one hand and the press ring on the other hand, movement of the press jaws is transmitted to the adapter element, and the press ring can be moved from an open position to a closed position to press the press fitting, wherein, according to the present invention, the first pair of connecting elements are different from the second pair of connecting elements.

[0036] The adapter element allows a press tool having only one pair of connecting elements for connecting to a corresponding pair of receiving elements on a first press ring to be connected to a different pair of receiving elements on another press ring for pressing a press fitting, thereby allowing the press tool to be combined with multiple press rings.

[0037] Preferably, the adapter element has two separate components, a first component connectable to a first of a pair of connection elements of the press tool and a second component connectable to a second of the pair of connection elements of the press tool.

[0038] Preferably, the first pair of receiving elements are recesses and / or the second pair of connecting elements are undercuts.

[0039] A fourth aspect of the present invention relates to an adapter element for a press ring, wherein the adapter element includes a first pair of connecting elements for connecting to a corresponding pair of connecting elements of a press tool.

[0040] The adapter element further includes a second pair of connecting elements for connecting to the pair of receiving elements of the press ring, and when the adapter element is connected to the press tool on the one hand and the press ring on the other hand, movement of the press jaws is transmitted to the adapter element, and the press ring can be moved from an open position to a closed position to press the press fitting, wherein, according to the present invention, the first pair of connecting elements are different from the second pair of connecting elements.

[0041] The adapter elements allow the press ring to have only one pair of receiving elements for connection to a corresponding pair of connecting elements on a first press tool, but to connect to a different pair of connecting elements on another press tool for pressing the press fitting, thereby allowing the press ring to be used with multiple press tools.

[0042] Preferably, the adapter element has two separate components, a first component connectable to a first of a pair of receiving elements of the press ring and a second component connectable to a second of the pair of receiving elements of the press ring.

[0043] Preferably, the first pair of receiving elements are connecting bolts and / or the second pair of connecting elements are ball or spherical segments, or vice versa.

[0044] A fifth aspect of the invention relates to a pressing device, as mentioned above, comprising an electric drive device according to the invention and a press tool, wherein the press tool is detachably connected to the drive device, in particular for moving the press jaws of the press tool.

[0045] A sixth aspect of the present invention relates to a system including the press ring according to the present invention described above and a press device having a drive unit.

[0046] A seventh aspect of the invention relates to a system comprising an adapter element, a press ring and a press device according to the invention as described above. DETAILED DESCRIPTION OF THE INVENTION

[0047] In the following, the present invention will be explained in more detail by means of preferred embodiments with reference to the accompanying drawings. [Brief explanation of the drawings]

[0048] [Figure 1] A press ring according to the present invention and first and second suitable press tools are shown. [Figure 1A] 1 illustrates a press ring according to the present invention connected to a first suitable press tool. [Figure 1B] 10 illustrates a press ring according to the present invention connected to a second suitable press tool. [Figure 2]1 shows a further embodiment of a press ring according to the present invention and first and second suitable press tools; [Figure 2A] 3 illustrates the press ring according to the embodiment shown in FIG. 2 connected to a first suitable press tool. [Figure 2B] 3 illustrates a press ring according to the embodiment shown in FIG. 2 connected to a second suitable press tool. [Figure 3] 1 shows a press tool according to the present invention; [Figure 4A] 1 shows an adapter element according to the invention for a press tool with a suitable press tool. [Figure 4B] 1 shows an adapter element according to the invention for a press ring with an appropriate press ring.

[0049] FIG. 1 shows a press ring 10 according to the present invention for pressing a press fitting 15 with an appropriate first press tool 20 and an appropriate second press tool 30 in an open position, i.e., prior to pressing the press fitting 15. In this state, the press ring 10 is comfortably placed around the press fitting 15. The press ring 10 has a plurality of segments 13 rotatably connected to one another about a rotation axis D1 and defining an inner opening 14. A first pair of receiving elements 11 and a second pair of receiving elements 12 are disposed on the first and last segments 13 of the press ring 10, respectively. In this case, the first pair of receiving elements 11 of the embodiment of the press ring shown in FIG. 1 are formed as connecting bolts, and the second pair of receiving elements 12 are formed as spherical recesses in the press ring 10.

[0050] 1, the first and second pairs of receiving elements 11, 12 of the press ring 10 are each disposed distally within the press ring segment 13 at offset positions. In particular, the second pair of receiving elements 12 is disposed between two respective engagement portions on each connecting bolt of the first pair of receiving elements 11.

[0051] 1-2 further shows a first press tool 20 having two press jaws 21 rotatably arranged about respective rotation axes D2. The first press tool 20 further comprises a pair of connecting elements 22 designed as undercuts 23. The connecting elements 22 of the first press tool are designed in terms of their shape, size and position so as to be suitable for connecting to the first pair of receiving elements 11 of the press ring 10.

[0052] 1-3 show a second press tool 30 having press jaws 31 rotatably arranged about a rotation axis D3. The second press tool 30 also includes a pair of connecting elements 32. The connecting elements 32 of the first press tool 30 are designed in terms of their shape, size, and position so as to be suitable for connection with the second pair of receiving elements 12 of the press ring 10. In the example shown in FIG. 1, the connecting elements 32 of the second press tool 30 are formed as spherical segments for connection with the respective recesses of the second pair of receiving elements 12 of the press ring 10.

[0053] In the following, identical or similar components are designated by the same reference numerals.

[0054] In FIG. 1A-1, the press ring 10 and the first press tool 20 are shown engaged with each other but still in the open position. In FIG. 1A-2, the press ring 10 and the first press tool 20 are shown engaged with each other in the closed position, i.e., after pressing. The connecting elements 22 of the first press tool 20 are connected to the first pair of receiving elements 11 of the press ring 10. As can be seen in FIG. 1A-3, the shape, size, and position of the connecting elements 22 of the first press tool 20 and the first pair of receiving elements 11 of the press ring 10 match each other so that the connecting elements 22 of the press tool, which are formed as undercuts, engage around the first pair of receiving elements 11 of the press ring, which are formed as bolts. By moving the press jaws 21 of the press tool 20, the press ring 10 moves from the open position shown in FIG. 1A-1 to the closed position shown in FIG. 1A-2. Here, the distance between the end segments 13 is reduced. This reduces the radius of the inner opening 14 formed by the segment 13, and the pressing force is transmitted to the press fitting 15, which is pressed.

[0055] In FIG. 1B-1, the press ring 10 and the second press tool 30 are also shown engaged with each other, but still in the open position. Meanwhile, in FIG. 1B-2, the press ring 10 and the second press tool 20 are shown engaged with each other in the closed position, i.e., after pressing. Here, the connecting elements 32 of the second press tool 30 are connected to the second pair of receiving elements 12 of the press ring 10. Notably, the press ring 10 shown in FIG. 1B is the same press ring as in FIG. 1A. As can be seen in FIG. 1B, the pair of connecting elements 32 of the second press tool 30 and the second pair of receiving elements 12 of the press ring 10 match each other in terms of shape, size, and position, such that the connecting elements 32 of the second press tool 30, which are spherically shaped, engage with the second pair of receiving elements 12 of the press ring, which are each formed as a spherical recess. Here, the movement of the press jaws 31 of the second press tool 30 also moves the press ring 10 from the open position shown in Figure 1B-1 to the closed position shown in Figure 1B-2. Here, the distance between the end segments 13 is also reduced, and the radius of the inner opening 14 formed by the segments 13 is reduced, so that the press fitting 15 is pressed by the pressing force transmitted thereto.

[0056] 2 shows a further embodiment of a press ring 40 according to the present invention, a first press tool 50 suitable for the press ring 40, and a second press tool 30 suitable for the press ring 40. The press ring 40 shown in FIG. 2 also has a plurality of segments 43 rotatably connected to one another about a rotation axis D4 and forming an inner opening 44. In turn, a first pair of receiving elements 41 and a second pair of receiving elements 42 are disposed on the first and last segments 43 of the press ring 40, respectively.

[0057] In this case, both the first pair of receiving elements 41 and the second pair of receiving elements 42 of the embodiment of press ring 40 shown in FIG. 2 are formed as recesses in press ring 40. However, as can be seen in FIGS. 2-4 , the recesses in the first pair of receiving elements 41 of press ring 40 have different shapes and dimensions. In particular, the recesses in the second pair of receiving elements 42 are disposed within the recesses in the first pair of receiving elements. Here, the recesses in the first pair of receiving elements 41 have smaller dimensions than the recesses in the second pair of receiving elements 42 of press ring 40.

[0058] 2 further shows a first press tool 50 suitable for the press ring 40, which has two press jaws 51 rotatably arranged about respective rotation axes D5. The first press tool 50 further comprises a pair of connecting elements 52 formed as disk-shaped or circular segments. The connecting elements 52 of the first press tool 50 are designed in terms of their shape, dimensions and position so as to be suitable for connection with the second pair of receiving elements 42 of the press ring 40.

[0059] 2 also shows a second press tool 30 having press jaws 31 rotatably arranged about a rotation axis D3. The second press tool 30 also includes a pair of connecting elements 32. The connecting elements 32 of the first press tool 30 are designed in terms of their shape, size, and position so as to be suitable for connection with the first pair of receiving elements 41 of the press ring 40. In the example shown in FIG. 2, the connecting elements 32 of the second press tool 30 are spherically shaped to connect with the respective recesses of the first pair of receiving elements 41 of the press ring 40.

[0060] 2, the recesses of the first pair of receiving elements 41 and the second pair of receiving elements 42 have a common lateral boundary. Here, as shown in FIG. 2A, when the second pair of receiving elements 42 is connected to the pair of connecting elements 52 of the first press tool 50, the common lateral boundary serves to limit the movement of the first press tool 50. On the other hand, as shown in FIG. 2B, when the first pair of receiving elements 41 is connected to the pair of connecting elements 32 of the second press tool 30, the second press tool 30 and the press ring 40 are rotatable relative to each other.

[0061] In Figure 2A-1, the press ring 40 and the first press tool 50 are shown engaged with one another but still in the open position, while in Figure 2A-2, the press ring 40 and the first press tool 50 are shown in the closed position, i.e., engaged with one another after pressing has occurred.

[0062] FIG. 2A-3 shows a cross section through the plane of the connecting element 52, and FIG. 2A-4 shows a perspective view of the press ring 40 and first press tool 50 in the closed position.

[0063] In Figure 2B-1, the press ring 40 and the second press tool 30 are shown sequentially engaged with one another, but still in the open position, while in Figure 2B-2, the press ring 40 and the second press tool 30 are shown in the closed position, i.e., engaged with one another after pressing has occurred.

[0064] FIG. 2B-3 further shows a cross section through the plane of the connecting element 32, and FIG. 2B-4 shows a perspective view of the press ring 40 and the second press tool 30 in the closed position.

[0065] FIG. 3 illustrates a press tool 60 according to the present invention. As can be seen in FIG. 3, the press tool has two press jaws 61, which are rotatable about their respective rotation axes D6 and can therefore move toward each other from an open position to a closed position during pressing. A first pair of connecting elements 62 and a second pair of connecting elements 63 are disposed on the press tool 60. The first and second pairs of connecting elements 62, 63 differ from each other in terms of shape and dimensions. In the embodiment of the press tool 60 illustrated in FIG. 3, the first pair of connecting elements 62 are formed as undercuts for connection to connecting bolts of a known press ring. Meanwhile, the second pair of connecting elements 63 of the press tool 60 are formed as spherical segments for connection to recesses of another known press ring. Here, as can be seen in FIG. 3, the undercuts of the first pair of connecting elements 62 are formed in the spherical segments of the second pair of connecting elements 63 of the press tool.

[0066] FIG. 4A-2 illustrates an adapter element 90 according to the present invention for a press tool 20. The adapter element 90 includes a first pair of connecting elements 91 and a second pair of connecting elements 92, which are different from the first pair of connecting elements 91 and function to connect to the pair of connecting elements 22 of the appropriate press tool 20, while the second pair of connecting elements 92 and function to connect to the pair of receiving elements 81 of the appropriate press ring 80 shown in FIG. 4A-1. When the press ring 80 is connected to a corresponding press tool by the second pair of connecting elements 92 of the adapter element 90 connected to the receiving elements 81, the press ring 80 can be moved from an open position for pressing a press fitting to a closed position by transmitting the movement of the press jaws 21 to the adapter element 90.

[0067] In the embodiment shown in Figure 4A-1, the pair of receiving elements 81 of the press ring 80 are formed as spherical recesses for connection to a second pair of connecting elements 92 of the adapter element 90 formed as spherical segments. Here, the first pair of connecting elements 91 of the adapter element are formed as connecting bolts for connection to the pair of connecting elements 22 of the press tool 20 shown in Figures 4A-2 and 4A-3, where the pair of connecting elements 22 of the press tool 20 are undercuts.

[0068] As can be seen in FIG. 4A-3, the adapter element 90 includes two separate components, one for each connecting element of the pair of connecting elements 22 of the press tool 20.

[0069] FIG. 4B-3 illustrates an adapter element 100 according to the present invention for a press ring 70. The adapter element 100, in turn, includes a first pair of connecting elements 101 and a second pair of different connecting elements 102, where the first pair of connecting elements 101 serve to connect to a pair of connecting elements of an appropriate press tool, while the second pair of connecting elements 102 serve to connect to a pair of receiving elements 71 of an appropriate press ring 70, as shown in FIGS. 4B-1 and 4B-2. Once properly connected to an appropriate press tool, the press ring 70 can be moved from an open position to a closed position to press a press fitting by transferring the movement of the press jaws of the press tool to the adapter element 100.

[0070] In the embodiment shown in Figures 4B-1 and 4B-2, a pair of receiving elements 71 of the press ring 70 are formed as connecting bolts for connection to a second pair of connecting elements 102 of the adapter element 100 formed as receiving openings, while a first pair of connecting elements 101 of the adapter element are formed as spherical recesses for connection to a pair of connecting elements of an appropriate press tool formed as spherical segments.

[0071] Here, adapter element 100 includes two separate components, one for each receiving element of the pair of receiving elements 71 of press ring 70 .

Claims

1. A press ring for pressing a press fitting, comprising: at least two segments (13, 43, 73, 83) movably connected to one another, the segments (13, 43, 73, 83) being movable from an open position to a closed position; the press ring (10, 40, 70, 80) includes at least a first pair of receiving elements (11, 12, 41, 42, 71, 81) and a second pair of receiving elements (11, 12, 41, 42, 71, 81); the first pair of receiving elements (11, 12, 41, 42, 71, 81) are provided on the initial segment (13, 43, 73, 83) and the last segment (14, 16, 18, 19) of the press ring (10, 40, 70, 80), and are configured to connect to a pair of connecting elements (22, 32, 52, 62, 63) of the first press tool (20, 30, 50, 60), respectively; the second pair of receiving elements (11, 12, 41, 42, 71, 81) are provided on the first segment (13, 43, 73, 83) and the last segment (14, 16, 18, 20) of the press ring (10, 40, 70, 80), and are configured to connect to a pair of connecting elements (22, 32, 52, 62, 63) of a second press tool (20, 30, 50, 60), respectively; the first pair of receiving elements (11, 12, 41, 42, 71, 81) is different from the second pair of receiving elements (11, 12, 41, 42, 71, 81); Press ring.

2. the first pair of receiving elements (11, 71) are connecting bolts and / or the second pair of receiving elements (12, 81) are recesses; 2. The press ring of claim 1.

3. The first pair of receiving elements (41) are recesses and the second pair of receiving elements (42) are recesses.

2. The press ring of claim 1.

4. the recesses of the first pair of receiving elements (41) are provided in the recesses of the second pair of receiving elements (42), and the recesses of the first pair of receiving elements (41) have dimensions smaller than the recesses of the second pair of receiving elements (42); 4. The press ring of claim 3.

5. the recesses of the first pair of receiving elements (41) and the recesses of the second pair of receiving elements (42) have a common lateral boundary, and when the second pair of receiving elements (42) are connected to a first pair of connecting elements (52) of a first press tool (50), the common lateral boundary acts as a movement limit for the first press tool (50), and the common lateral boundary acts as a movement limit for the first press tool (50), and when the first pair of receiving elements (41) are connected to a first pair of connecting elements (32) of a second press tool (30), the second press tool (30) and the press ring rotate relative to each other.

5. The press ring of claim 4.

6. The press ring is a press collar having at least two segments (13, 43, 73, 83).

6. A press ring according to any one of claims 1 to 5.

7. 1. A press tool for pressing a press fitting with a press ring, comprising: press jaws (61) movable relative to one another from an open position to a closed position for pressing; The press jaws include at least a first pair of connecting elements (62) and a second pair of connecting elements (63), the first pair of connecting elements (62) are configured to connect to a pair of receiving elements (71) of a first press ring (70), respectively, and the second pair of connecting elements (63) are configured to connect to a pair of receiving elements (81) of a second press ring (80), respectively; the first pair of connecting elements (62) are different from the second pair of connecting elements (63); Press tool.

8. the first pair of connecting elements (62) are undercuts for connecting to connecting bolts of the press rings (10, 70); 8. The press tool of claim 7.

9. the second pair of connecting elements (63) are ball or spherical segments for connecting to recesses in the press ring (40, 80); A press tool according to claim 7 or 8.

10. The undercuts of the first pair of connecting elements (62) are formed in the ball or spherical segments of the second pair of connecting elements (63).

9. The press tool of claim 8.

11. An adapter element for a press tool, comprising: The adapter element (90) has a first pair of connecting elements (91) for connecting to a pair of connecting elements (22) of the press tool (20) and a second pair of connecting elements (92) for connecting to a corresponding pair of receiving elements (81) of the press ring (80), and when the adapter element (90) is connected to the press tool (20) on the one hand and the press ring (80) on the other hand, when the press jaws (21) of the press tool (20) move, this movement is transmitted to the adapter element (90), and the press ring (80) moves from an open position to a closed position to press the press fitting (85); the first pair of connecting elements (91) are different from the second pair of connecting elements (92); Adapter element.

12. the first pair of receiving elements (81) are recesses and / or the second pair of receiving elements (22) are undercuts; 12. An adapter element according to claim 11.

13. 1. An adapter element for a press ring, comprising: The adapter element (100) has a first pair of connecting elements (101) for connecting to a corresponding pair of connecting elements (32) of the press tool (30) and a second pair of connecting elements (102) for connecting to a pair of receiving elements (71) of the press ring (70), and when the adapter element (100) is connected to the press tool (30) on the one hand and to the press ring (70) on the other hand, when the press jaws (31) of the press tool (30) are moved, this movement is transmitted to the adapter element (100), and the press ring (70) moves from an open position to a closed position to press the press fitting (75), the first pair of connecting elements (101) are different from the second pair of connecting elements (102); Adapter element.

14. The first pair of receiving elements (71) are connecting bolts, and the second pair of receiving elements (102) are ball segments or spherical segments.

14. An adapter element according to claim 13.

15. A press device comprising an electric drive and a press tool according to claim 7, wherein the press tool is connected to the drive for moving the press jaws (21, 31, 51, 61) of the press tool. Press equipment.

16. The press ring according to claim 1; a press device having a drive device; system.

17. An adapter element according to any one of claims 11 to 14; Press ring and A press device is provided. system.

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