Connection structure, handle and arrangement for a welding torch and welding torch

Abstract

A connection structure (10) for a welding torch (1) is configured to connect a handle (2) of the welding torch (1) to a cable (3) for transmitting an electric current. The connection structure (10) comprises a first end (11) configured to engage with the handle (2), a second end (12) configured to engage with the cable (3), and a longitudinal direction (13) extending from the first end (11) to the second end (12). At least a first connection portion (14) of an outer surface (15) of the first end (11) is formed as a sphere or a part of a sphere. The first connection portion (14) is provided with two first fastening members (16) arranged on opposite sides (17) of the first connection portion (14) with respect to the longitudinal direction (13) and configured to engage with one of two second fastening members (31) arranged on an inner surface (32) of the handle (2) in each case, such that when the connection structure (10) is connected to the handle (2) at the first end (11) via the first connection portion (14) and the fastening members (16, 31), the connection structure (10) enables a rotation of the connection structure (10) with respect to the handle (2) about a bending axis (18) defined by the first fastening members (16).

Description

Technical Field

[0001] This disclosure relates to welding torches, and more particularly to connection structures, handles, and arrangements for welding torches. Background Technology

[0002] Traditional welding torches can be difficult to operate, especially when welding hard-to-reach structures that require rotating the torch in different directions, because the handle of an arc welding torch (such as a TIG torch) is made of a heat-resistant, rigid material. This handle can cause strain on the welder's wrists and arms, leading to fatigue and pain. The same problem can occur even if the cable sheath protecting the cable is connected to the handle via a connector. Even if the cable is made of a highly flexible material, similar strain can occur when welding in difficult locations requiring frequent changes in welding position.

[0003] Solutions exist for these problems, such as using a handle made of flexible material or connecting the cable to the handle via a bending support. However, such a torch handle may be too wide for some welders, the structure may not achieve the required level of bending capability, or the structure may be difficult to assemble. Summary of the Invention

[0004] One object of this disclosure is to provide a new connection structure, handle, and arrangement for a welding torch.

[0005] The purpose of this disclosure is achieved by devices and arrangements having the features described in the independent claims. Some embodiments of this disclosure are disclosed in the dependent claims.

[0006] This disclosure is based on the idea of ​​providing a connection structure for connecting a handle of a welding torch to a cable of the welding torch, the connection structure having an elliptical cross section at least at the end connected to the handle, and the connection structure and the handle being provided with fastening devices configured to engage with each other such that the handle and the connection structure can rotate relative to each other about an axis defined by the fastening devices.

[0007] The advantage of this solution is that it is narrower and therefore easier to use, while providing reliable bending between the handle and the cable. Attached Figure Description

[0008] In the following, the present disclosure will be described in more detail with reference to the accompanying drawings, in which:

[0009] Figure 1 The welding torch is shown schematically from the side.

[0010] Figure 2 A connection structure according to one embodiment is schematically illustrated in a three-dimensional diagram;

[0011] Figure 3 The connection structure shown schematically is shown from the second end of the connection structure;

[0012] Figure 4 A handle for a welding torch according to one embodiment is schematically shown in a perspective view;

[0013] Figure 5 The arrangement of a welding torch according to one embodiment is shown schematically from the side.

[0014] Figure 6 A connector element according to one embodiment is schematically shown in a perspective view;

[0015] Figure 7 A cotter pin according to one embodiment is schematically shown in a perspective view;

[0016] Figure 8 A connector element according to one embodiment is schematically shown in a perspective view; and

[0017] Figure 9 The arrangement of the welding torch is shown schematically.

[0018] The accompanying drawings are provided merely to illustrate some features of this disclosure and are not shown to scale. In different drawings and embodiments, similar features are referred to using the same reference numerals. For clarity, not all similar features need to be provided with reference numerals. Detailed Implementation

[0019] Figure 1 The welding torch is shown schematically from the side. Figure 2 A connection structure according to one embodiment is schematically shown in a perspective view. Figure 3 The connection structure shown is schematically illustrated from the second end of the connection structure.

[0020] refer to Figure 1-3 The connection structure 10 for the welding torch 1 is configured to connect the handle 2 of the welding torch 1 to the cable 3 for transmitting current. More specifically, the connection structure 10 is configured to connect the handle 2 to a protective structure (generally referred to as a cable cover or cable protector), which is configured to protect the cable 3 from mechanical stresses that occur during welding. Such cable protectors or cable covers are known in the art. The cable protector may be made of, for example, leather. The actual wire or cable carrying the current is disposed inside the cable cover, but in this disclosure, the cable and cable cover are understood as a structural component, independent of, for example, detailed structure and its actual layers.

[0021] Connection structure 10 (e.g.) Figure 1-3 The connection structure 10 includes: a first end 11 configured to engage with the handle 2, a second end 12 configured to engage with the cable 3 or a cable cover covering the actual cable 3, and a longitudinal direction 13. The longitudinal direction 13 of the connection structure 10 extends from the first end 11 to the second end 12. In some embodiments, the connection structure 10 may have an angled shape, but in such cases, the longitudinal direction 13 refers to the direction extending from the center of the first end 11 to the center of the second end 12.

[0022] In the connecting structure 10, at least a first connecting portion 14 of the outer surface 15 of the first end 11 is formed as a sphere or a part of a sphere. In other words, the first end 11 of the connecting structure 10 includes an outer surface 15 or a part of an outer surface 15, which has a circular shape but an asymmetrical spherical shape. This outer surface 15 or a part of the outer surface 15 forms the first connecting portion 14.

[0023] The first connecting portion 14 is provided with two first fastening members 16, which are disposed on opposite sides 17 of the first connecting portion 14 relative to the longitudinal direction 13. In other words, the two first fastening members 16 are disposed on opposite sides of the longitudinal direction 13. According to one embodiment, the two first fastening members 16 are disposed symmetrically to each other with respect to the longitudinal central axis (not shown) of the connecting portion 14.

[0024] When the connecting structure 10 is connected to the handle 2, the two first fastening members 16 are configured to engage, in each case, one of the two second fastening members 31 disposed on the inner surface 32 of the handle 2. More specifically, the two first fastening members 16 are configured to engage, in each case, one of the two second fastening members 31, such that when the connecting structure 10 is connected to the handle 2 at the first end 11 via the first connecting portion 14 and the fastening members 16, 31, the connecting structure 10 allows the connecting structure 10 to rotate relative to the handle 2 about a bending axis 18 defined by the first fastening members 16. According to one embodiment, the bending axis 18 is defined by the fastening members 16 such that the bending axis 18 extends from the center of one of the first fastening members 16 to the center of the other first fastening member 16. According to one embodiment, the bending axis 18 passes through the longitudinal axis of the connecting structure 10.

[0025] According to one embodiment, the first connecting portion 14 includes an elliptical cross-section, wherein the width 19 of the first connecting portion 14 in the direction of the bending axis 18 is shorter than the height 20 of the first connecting portion 14 in the direction perpendicular to both the bending axis 18 and the longitudinal direction 13. In other words, the width 19 and the height 20 of the first connecting portion 14 are defined in a transverse plane relative to the longitudinal direction 13 of the connecting structure 10, and the width 19 is measured in the direction of the bending axis 18, and the height 20 is measured in the direction perpendicular to the bending axis 18.

[0026] According to one embodiment, at least a second connecting portion 21 of the inner surface 22 of the second end 12 is formed as a sphere or a part of a sphere. In other words, the second end 12 of the connecting structure 10 may include an inner surface 22 or a part of an inner surface 22, the inner surface 22 or a part of an inner surface 22 having a sphere or a part of a sphere shape, and the inner surface 22 or a part of an inner surface 22 of the second end 12 forms the second connecting portion 21. The second connecting portion 21 of the inner surface 22 of the second end 12 may be formed as a sphere or a part of a sphere such that when the connecting structure 10 is connected to the cable 3 at the second end 12, the connecting structure 10 allows the cable 3 to rotate 360 ​​degrees relative to the connecting structure 10 about the longitudinal direction 13.

[0027] According to one embodiment, the second connecting portion 21 may include a circular cross-section, wherein the width 24 and height 25 of the second connecting portion 21 are equal to each other. In other words, the width 24 and the height 25 of the second connecting portion 21 are defined in a transverse plane relative to the longitudinal direction 13 of the connecting structure 10, and the width 24 is measured in a direction parallel to the bending axis 18, and the height 25 is measured in a direction perpendicular to the bending axis 18.

[0028] According to one embodiment, the second connecting portion 21 may include a circular cross-section, wherein the width 24 and height 25 of the second connecting portion 21 are equal to each other. According to one embodiment, the width 24 and height 25 of the second connecting portion 21 are greater than the width 19 of the first connecting portion 14.

[0029] According to one embodiment, at least a second connecting portion 21 of the inner surface 22 of the second end 12 includes an elliptical cross-section, wherein the width 24 of the second connecting portion 21 in a direction parallel to the bending axis 18 is shorter than the height 25 of the second connecting portion 21 in a direction perpendicular to both the bending axis 18 and the longitudinal direction 13. According to one embodiment, the width 24 of the second connecting portion 21 may be the same as the width 19 of the first connecting portion 14, and / or the height 25 of the second connecting portion 21 may be the same as the height 20 of the first connecting portion 14.

[0030] According to one embodiment, each first fastening member 16 includes at least one of a groove or a through hole disposed on the outer surface 15 of the first end 11. According to another embodiment, each first fastening member 16 includes a protrusion projecting outward from the outer surface 15 of the first end 11.

[0031] According to one embodiment, the connecting structure 10 includes a waist portion 23 disposed between the first end 11 and the second end 12. The waist portion 23 may be narrower than the width 19 of the first connecting portion 14 and the width 24 of the second connecting portion 21 and / or the height 20 of the first connecting portion 14 and the height 25 of the second connecting portion 21. According to one embodiment, the shape and position of the waist portion 23 may be configured to define a maximum length for relative rotational movement between the connecting structure 10 and the handle 2.

[0032] According to one embodiment, the connecting structure 10 is formed as a separate structural component. According to one embodiment, the connecting structure 10 may be formed as an integral part of the bending support structure 6 of the welding torch 1.

[0033] Figure 4 A handle for a welding torch according to one embodiment is schematically shown in a perspective view.

[0034] Handle 2 for welding torch 1 (e.g.) Figure 4 The handle 2) is configured to be connected to the cable 3 for transmitting current via the connecting structure 10. Similar to the embodiment illustrated with the connecting structure 10, the handle 2 may be more specifically configured to be connected to a protective structure via the connecting structure 10, which is generally referred to as a cable cover or cable protector and is configured to protect the cable 3 from mechanical stresses that occur during welding.

[0035] The handle 2 includes a connecting end 33 configured to engage with the connecting structure 10, a distal end 34 located at the end opposite to the connecting end 33, and a longitudinal direction 35 extending from the connecting end 33 to the distal end 34.

[0036] In the handle 2, at least a third connecting portion 36 of the inner surface 32 of the connecting end 33 is formed as a sphere or a part of a sphere. In other words, the inner surface 32 or a part of the inner surface 32 at the connecting end 33 of the handle 2 may form a third connecting portion 36, which may be formed as a sphere or a part of a sphere.

[0037] Two second fastening members 31 may be provided on the inner surface 32 of the handle 2 at the third connecting portion 36. The two second fastening members 31 may be provided on opposite sides 38 of the third connecting portion 36 relative to the longitudinal direction 35. The two second fastening members 31 may be configured to engage with one of the two first fastening members 16 provided on the outer surface 15 of the first end 11 of the connecting structure 10 in each case, such that when the connecting structure 10 is connected to the handle 2 at the first end 11 via the first connecting portion 14 and the fastening members 16, 31, the connecting structure 10 allows the connecting structure 10 to rotate relative to the handle 2 about the bending axis 18 defined by the second fastening members 31.

[0038] According to one embodiment, the third connecting portion 36 may include an elliptical cross-section. The width 39 of the third connecting portion 36 in the direction of the bending axis 18 may be shorter than the height 40 of the third connecting portion 36 in the direction perpendicular to both the bending axis 18 and the longitudinal direction 35.

[0039] According to one embodiment, each second fastening member 31 includes a protrusion projecting inward from the inner surface 32 of the connecting end 33. Engagement of the second fastening member 31 with one of the two first fastening members 16 in each case may include receiving the second fastening member 31 in each of the two first fastening members 16 in each case.

[0040] According to one embodiment, each second fastening member 31 includes at least one of a groove or a through hole disposed on the inner surface 32 of the connecting end 33. Engagement of the second fastening member 31 with one of the two first fastening members 16 in each case may include receiving the first fastening member 16 into one of the two second fastening members 31 in each case.

[0041] In other words, the protrusion can be disposed in the handle 2 or the connecting structure 10, and the corresponding elements (i.e., the connecting structure 10 and the handle 2) can respectively include grooves or through holes. When the protrusion is received in the groove or through hole, the protrusion can be configured to rotate in the groove or through hole so that the handle 2 and the connecting structure 10 can rotate relative to each other. Preferably, the protrusion and / or the groove or through hole can include a rotationally symmetrical shape adapted to the corresponding element so that the protrusion rotates smoothly in the groove or through hole.

[0042] Figure 5 The arrangement of a welding torch according to one embodiment is shown schematically from the side. Figure 9 The arrangement of the welding torch is shown schematically.

[0043] Arrangement 4 for welding torch 1 (e.g.) Figure 5 and / or Figure 9The arrangement may include a connection structure 10 and a handle 2, which may be a combination of one or more embodiments disclosed in this specification and the appended claims and drawings.

[0044] According to one embodiment, the first connecting portion 14 of the connecting structure 10 and the third connecting portion 36 of the handle 2 can be configured to at least partially adapt to each other such that when the connecting structure 10 is connected to the handle 2 at the first end 11 via the first connecting portion 14 and the fastening members 16, 31, the connecting structure 10 allows the connecting structure 10 to rotate relative to the handle 2 about a bending axis 18 defined by the first fastening member 16.

[0045] According to one embodiment, the first fastening member 16 or the second fastening member 31 may include protrusions, and the second fastening member 31 or the first fastening member 16 may correspondingly include recesses or through holes. In each case, each of the protrusions may be received in one of the recesses or through holes, whereby the first fastening member 16 engages with the second fastening member 31 to connect the connection structure 10 to the handle 2.

[0046] According to one embodiment, arrangement 4 further includes a cable 3 for transmitting current. According to one embodiment, the cable 3 may include a fourth connection portion 42 at a connection end 5 configured to connect to the connection structure 10, comprising an outer surface 41 of the cable 3. According to one embodiment, the fourth connection portion 42 may be formed as a sphere or part of a sphere and is configured to at least partially mate with the second connection portion 21 such that when the fourth connection portion 42 is received within the second connection portion 21, thereby engaging the second end 12 of the connection structure 10 with the cable 3, the second connection portion 21 and the fourth connection portion 42 form a spherical connector connecting the cable 3 to the connection structure 10. Therefore, the connection structure 10 allows the cable 3 to rotate 360 ​​degrees relative to the connection structure 10 about the longitudinal direction 13.

[0047] Figure 6 A connector element according to one embodiment is schematically shown in a perspective view. Figure 7 A cotter pin according to one embodiment is schematically shown in a perspective view. Figure 8 A connector element according to one embodiment is schematically shown in a perspective view. Figure 8 In this case, a cotter pin is provided in the connector element.

[0048] According to one embodiment, the connection end 5 of the cable 3 includes a bending support structure 6, which includes a plurality of connector elements 7 arranged adjacent to each other in the longitudinal direction 13. Each connector element 7 may have a first end 27, a second end 28, and a waist portion 29 between the first end 27 and the second end 28. According to one embodiment, the first end 27 of the first connector element 7 at the connection end 5 of the cable 3 includes a fourth connection portion 42, the first ends 27 of the remaining connector elements 7 include connections on their outer surfaces 43 that are at least functionally similar to the fourth connection portion 42, and, except for the last connector element 7 seen from the connection end 5 of the cable 3, the second end 28 of each of the connector elements 7 includes connections on its inner surfaces 44 that are at least functionally similar to the second connection portion 21. Therefore, in each case, two adjacent connector elements 7 form a ball joint that connects the first connector element 7 at the connection end 5 of the cable 3 to the connection structure 10 and the remaining connector elements 7 to the adjacent connector elements 7, so that the bending support structure 6 can rotate the connector elements 7 360 degrees about the longitudinal direction 13 relative to the connection structure 10 or the adjacent connector elements 7 in each case.

[0049] According to one embodiment, at least a portion of the outer surface 26 of the second end 28 of the connector element 7 is formed as part of a sphere cut in a plane perpendicular to the longitudinal direction 13. Therefore, rotation about an axis perpendicular to the longitudinal direction 13 is limited by the shape of the second end 12 of the connecting structure 10 and / or the outer surfaces 30, 26 of the adjacent connector element 7.

[0050] According to one embodiment, a first end 27 of one or more connector elements 7 includes a slit 46 extending from an edge 47 of the first end 27 toward a waist 30 of the connector element 7.

[0051] According to one embodiment, the inner surface 48 of the first end 27 of the connector element 7 includes grooves 49 extending along the peripheral direction of the inner surface 48 on both sides of the slit 46.

[0052] According to one embodiment, the groove 49 extends only over a portion of the periphery of the inner surface 48. Therefore, the portion of the inner surface 48 without the groove is positioned opposite the slit 46.

[0053] According to one embodiment, arrangement 4 further includes a cotter pin element 8, which includes a longitudinal member 50 configured to fit into a slit 46 and a circumferential member 51 configured to fit into a recess 49. Therefore, when the first end 27 of the connector element 7 is inserted into the connecting structure 10 or the second ends 12, 28 of an adjacent connector element 7, the slit 46 allows the first end 27 of the connector element 7 to be compressed. The cotter pin element 8 may be disposed within the second ends 12, 28 such that the longitudinal member 50 is disposed in the slit 46 and the circumferential member 51 is disposed in the recess 49, as... Figure 8 The most clearly visible part is the cotter pin element 8. Therefore, when the first end 27 of the connector element 7 is released from compression after being positioned in the connection structure 10 or the second end 12, 28 of the adjacent connector element 7, the cotter pin element 8 secures and reinforces the inner surface 48 to maintain its original shape.

[0054] According to one embodiment, the welding torch 1 includes at least one of the following: a connection structure 10, a handle 2, or an arrangement 4, according to one or more embodiments disclosed in this specification or the appended claims and drawings.

[0055] According to one embodiment, the welding torch 1 can be a MIG welding torch, a MAG welding torch, a TIG welding torch, or a plasma torch.

[0056] According to one embodiment, the connector element 7 disclosed in an embodiment of the present specification and / or the appended claims and / or drawings (e.g., connector element 7 having a slit 46 for cotter pin element 8), or an arrangement including such connector element 7 and cotter pin element 8, can be used independently without the connection structure 10.

Claims

1. A connection structure for a welding torch, wherein, The connection structure is configured to connect the handle of the welding torch to a cable for transmitting current, characterized in that, The connection structure includes: The first end is configured to engage with the handle. The second end configured to engage with the cable, and The longitudinal direction extending from the first end to the second end, Wherein, at least a first connecting portion on the outer surface of the first end is formed as a sphere or part of a sphere, and The first connecting portion is provided with two first fastening members, which are disposed on opposite sides of the first connecting portion relative to the longitudinal direction and configured to engage with one of two second fastening members disposed on the inner surface of the handle, such that when the connecting structure is connected to the handle at the first end via the first connecting portion and the first and second fastening members, the connecting structure allows the connecting structure to rotate relative to the handle about a bending axis defined by the first fastening members.

2. The connection structure according to claim 1, wherein, The first connecting portion has an elliptical cross-section, wherein the width of the first connecting portion in the direction of the bending axis is shorter than the height of the first connecting portion in the direction perpendicular to both the bending axis and the longitudinal direction.

3. The connection structure according to claim 1 or 2, wherein, At least a second connection portion on the inner surface of the second end is formed as a sphere or part of a sphere, such that when the connection structure is connected to the cable at the second end, the connection structure allows the cable to rotate 360 ​​degrees relative to the connection structure about the longitudinal direction.

4. The connection structure according to claim 3, wherein, The second connecting portion includes a circular cross-section, wherein the width and height of the second connecting portion are equal to each other.

5. The connection structure according to claim 3, wherein, The second connecting portion includes a circular cross-section, wherein the width and height of the second connecting portion are equal to each other and are greater than the width of the first connecting portion.

6. The connection structure according to claim 1 or 2, wherein, At least a second connecting portion of the inner surface of the second end includes an elliptical cross section, wherein the width of the second connecting portion in a direction parallel to the bending axis is shorter than the height of the second connecting portion in a direction perpendicular to both the bending axis and the longitudinal direction.

7. The connection structure according to claim 1 or 2, wherein, Each first fastening member includes at least one of a groove or a through hole disposed on the outer surface of the first end.

8. The connection structure according to claim 1 or 2, wherein, Each first fastening member includes a protrusion that projects outward from the outer surface of the first end.

9. The connection structure according to claim 1 or 2, wherein, The connecting structure includes a waist portion disposed between the first end and the second end, the waist portion being narrower than the width of the first connecting portion and the width of the second connecting portion and / or the height of the first connecting portion and the height of the second connecting portion.

10. The connection structure according to claim 1 or 2, wherein, The connection structure is formed as a separate structural component.

11. A handle for a welding torch, wherein, The handle is configured to be connected via a connection structure to a cable for transmitting current, characterized in that, The handle includes: The connection end is configured to engage with the connection structure. At the distal end opposite to the connecting end, and The longitudinal direction extending from the connecting end to the distal end, Wherein, at least a third connecting portion on the inner surface of the connecting end is formed as a sphere or part of a sphere, and The handle has two second fastening members on its inner surface at the third connection portion. The two second fastening members are disposed on opposite sides of the third connection portion relative to the longitudinal direction and are configured to engage with one of two first fastening members disposed on the outer surface of the first end of the connecting structure, such that when the connecting structure is connected to the handle at the first end via the first connection portion of the connecting structure and the first and second fastening members, the connecting structure allows the connecting structure to rotate relative to the handle about a bending axis defined by the second fastening members.

12. The handle according to claim 11, wherein, The third connecting portion includes an elliptical cross section, wherein the width of the third connecting portion in the direction of the bending axis is shorter than the height of the third connecting portion in the direction perpendicular to both the bending axis and the longitudinal direction.

13. The handle according to claim 11 or 12, wherein, Each second fastening member includes a protrusion projecting inward from the inner surface of the connection end, and wherein, Engaging the second fastening member with one of the two first fastening members includes receiving the second fastening member in each of the two first fastening members.

14. The handle according to claim 11 or 12, wherein, Each second fastening member includes at least one of a groove or a through hole disposed on the inner surface of the connecting end, and wherein, Engaging each of the second fastening members with one of the two first fastening members includes receiving each of the first fastening members in each of the two second fastening members.

15. An arrangement for a welding torch, characterized in that, The arrangement includes: The connection structure according to any one of claims 1-10, and The handle according to any one of claims 11-14.

16. The arrangement according to claim 15, wherein, The first connecting portion of the connecting structure and the third connecting portion of the handle are configured to at least partially adapt to each other such that when the connecting structure is connected to the handle at the first end via the first connecting portion and the first fastening member and the second fastening member, the connecting structure allows the connecting structure to rotate relative to the handle about a bending axis defined by the first fastening member.

17. The arrangement according to claim 15, wherein, The first or second fastening member includes a protrusion, and the second or first fastening member correspondingly includes a groove or a through hole. Furthermore, each of the protrusions is received in one of the grooves or through holes, thereby engaging the first fastening member with the second fastening member to connect the connection structure to the handle.

18. The arrangement according to any one of claims 15-17, wherein, The arrangement further includes: Cables used to transmit current, wherein, The cable includes a fourth connecting portion on its outer surface at the connection end configured to connect to the connection structure. The fourth connecting portion is formed as a sphere or part of a sphere and is at least partially adapted to the second connecting portion such that when the fourth connecting portion is received inside the second connecting portion, thereby engaging the second end of the connecting structure with the cable, the second connecting portion and the fourth connecting portion form a spherical connector connecting the cable to the connecting structure, thereby allowing the cable to rotate 360 ​​degrees relative to the connecting structure about the longitudinal direction.

19. The arrangement according to claim 18, wherein, The cable connection end includes a bending support structure, which comprises a plurality of connector elements arranged adjacent to each other in the longitudinal direction. Each connector element has a first end, a second end, and a waist portion between the first end and the second end of the connector element, and wherein, The first end of the first connector element located at the connection end of the cable among the plurality of connector elements includes the fourth connection portion. The first end of the remaining connector elements includes a connecting portion on its outer surface that is at least functionally similar to the fourth connecting portion, and Except for the last connector element visible from the connection end of the cable, the second end of each of the connector elements includes a connection portion on its inner surface that is at least functionally similar to the second connection portion. Thus, two adjacent connector elements each form a ball connector, which connects the first connector element at the connection end of the cable to the connection structure and the remaining connector elements to the adjacent connector elements, such that the bending support structure allows the connector elements to rotate 360 ​​degrees relative to the connection structure or the adjacent connector element in the longitudinal direction.

20. The arrangement according to claim 18, wherein, At least a portion of the outer surface of the second end of the connector element is formed as part of a sphere cut in a plane perpendicular to the longitudinal direction, thereby rotation about an axis perpendicular to the longitudinal direction is limited by the shape of the outer surface of the second end of the connection structure and / or the outer surface of the second end of the adjacent connector element.

21. The arrangement according to claim 19 or 20, wherein, The first end of one or more connector elements includes a slit extending from the edge of the first end toward the waist of the connector element.

22. The arrangement according to claim 19 or 20, wherein, The inner surface of the first end of the connector element includes grooves extending along the peripheral direction of the inner surface on both sides of the slit.

23. The arrangement according to claim 22, wherein, The groove extends only over a portion of the periphery of the inner surface, wherein the portion of the inner surface without the groove is positioned opposite the slit.

24. The arrangement according to claim 22, wherein, The arrangement further includes a cotter pin element comprising a longitudinal member configured to fit into the slit and a circumferential member configured to fit into the recess. Wherein, when the first end of the connector element is inserted into the second end of the connecting structure or the second end of an adjacent connector element, the slit allows the first end of the connector element to be compressed, and The cotter pin element can be disposed inside the second end of the connecting structure or the second end of an adjacent connector element, such that the longitudinal member is disposed in the slit and the circumferential member is disposed in the groove, thereby securing and reinforcing the inner surface to maintain its original shape when the first end of the connector element is released from compression after being disposed in the appropriate position in the second end of the connecting structure or the second end of an adjacent connector element.

25. A welding torch, wherein, The welding torch includes at least one of the following: The connection structure according to any one of claims 1-10, the handle according to any one of claims 11-14, or the arrangement according to any one of claims 15-24.

26. The welding torch according to claim 25, wherein, The welding torch is a MIG welding torch, a MAG welding torch, a TIG welding torch, or a plasma torch.

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