Thread connection for a torch system

• US 9,642,236 B2
• Filed: 09/19/2013
• Issued: 05/02/2017
• Est. Priority Date: 09/19/2013
• Status: Active Grant

• Current Assignee: Hypertherm Incorporated
• Original Assignee: Hypertherm Incorporated
• Inventors: Mather, Jonathan P., Cornish, Jeffrey R., Smith, Geoffrey W., Mandadzhiev, Boris, Jogdand, Harshawardhan, Laflamme, Shawn, Caccavaro, George
• Primary Examiner(s): Binda, Gregory
• Assistant Examiner(s): Dragicevich, Zachary
• Application Number:
  US14/031,420
• Publication Number:
  US 20150076819A1
• Time in Patent Office: 1,321 Days
• Field of Search: 285390, 285391, 21912152, 21912139, 21912148, 219 75, 31323141, 31323151, 31511121
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: B23K 9/32 Accessories earthing connections H01R
• CPC Class Codes: H05H 1/3423 Connecting means, e.g. electrical connecting means or fluid connections

Abstract

A connector component is provided for assembly into a torch. The connector component comprises a body that includes a proximal end and a distal end disposed along a longitudinal axis. At least two thread regions are disposed radially about the longitudinal axis on a surface of the body near the proximal end. Each thread region includes at least two parallel threads disposed on the surface of the body. In addition, at least two smooth regions are each disposed radially about the longitudinal axis between a pair of thread regions on the surface of the body.

Claims

1. A connector component configured for coupling an electrode to a plasma arc torch, the connected component adapted to secure to a corresponding component of another element of the plasma arc torch to attach the electrode to the other element, the connector component comprising:

a body including a proximal end and a distal end disposed along a longitudinal axis;

at least two thread regions disposed radially about the longitudinal axis on a surface of the body near the proximal end, wherein each thread region includes at least one thread disposed on the surface of the body; and

at least two smooth regions each disposed radially about the longitudinal axis between a pair of thread regions on the surface of the body,

wherein the at least one thread in a first thread region of the at least two thread regions does not create a continuous rotational thread path with the at least one thread of an adjacent thread region of the at least two thread regions, and

wherein at least one of the smooth regions of the connector component is configured to align with at least one of the thread regions of the corresponding component of the other element to facilitate slidable displacement of the connector component and the corresponding component relative to each other.

2. The connector component of claim 1, wherein the connector component comprises a male component configured to securely engage a female component.

3. The connector component of claim 2, wherein the male component includes a gap disposed at the distal end of the body, the gap being configured to prevent rotation of the male component in the female component unless the gap is aligned with a corresponding rim of the female component.

4. The connector component of claim 1, wherein the connector component comprises a female component configured to securely engage a male component.

5. The connector component of claim 4, wherein the female component includes a rim disposed on the distal end of the body, the rim being configured to prevent rotation of the male component in the female component unless the rim is aligned with a corresponding gap of the male component.

6. The connector component of claim 1, wherein the connector component includes three thread regions.

7. The connector component of claim 1, wherein one component is rotatable in relation to the other component in a first direction by a number of degrees less than 360°

to secure the other component.

8. The connector component of claim 7, wherein the number of degrees comprises one of less than or equal to about 60°

, less than or equal to about 90°

, or less than or equal to about 180°

.

9. The connector component of claim 7, wherein the components are disengaged when one component is rotated in relation to the other component in a second direction opposite from the first direction by about the same number of degrees.

10. The connector component of claim 1, wherein the location and orientation of the at least one thread on one thread region is substantially the same as that of another thread region.

11. The connector component of claim 1, wherein the at least two thread regions are disposed radially about the body in a rotationally symmetrical arrangement.

12. The connector component of claim 1, wherein the at least two smooth regions are disposed radially about the body in a rotationally symmetrical arrangement.

13. The connector component of claim 1, wherein the at least one thread of each thread region is oriented substantially orthogonal to the longitudinal axis.

14. The connector component of claim 1, wherein the lack of continuous rotational thread path on the connector component prevents one thread region of the connector component from engaging an adjacent thread region of the corresponding component during disengagement.

15. A consumable connector component of an electrode of a plasma arc torch for attaching the electrode to another element of the torch, the consumable connector component comprising:

a body including a proximal end and a distal end disposed along a longitudinal axis;

at least two thread regions disposed radially about the longitudinal axis on a surface of the body near the proximal end, wherein each thread region includes at least one thread disposed on the surface of the body; and

at least two smooth regions each disposed radially about the longitudinal axis between a pair of the thread regions on the surface of the body,

wherein the at least one thread in a first thread region of the at least two thread regions does not create a continuous rotational path with the at least one thread of an adjacent thread region of the at least two thread regions, and

wherein the consumable connector component is a female component configured to securely engage a male component of the other element.

16. The consumable connector component of claim 15, wherein the location and orientation of the at least one thread on one thread region is substantially the same as that of a different thread region.

17. The consumable connector component of claim 15, wherein the at least one thread in the first thread region is on a different rotational path as the at least one thread on the adjacent thread region, and the threads on the different rotational paths prevent the male component of the other element from engaging more than one thread region during rotation.

18. A method for engaging a first component of an electrode of a plasma arc torch and a second component of the plasma arc torch, the first and second components each having i) a plurality of thread regions each having at least one thread and ii) a plurality of slotted regions characterized by the absence of threads, the method comprising:

aligning radially at least one thread region of the first component with at least one slotted region of the second component;

sliding the first component into the second component longitudinally in the radially aligned position; and

rotating the first component in one direction relative to the second component to engage the at least one thread of the thread region of the first component with the at least one thread of the thread region of the second component to secure the first and second components relative to one another,

wherein at least one thread of a thread region of the second component does not create a continuous rotational thread path with at least one thread of an adjacent thread region of the second component such that the first component is prevented from rotating further in an opposite direction relative to the second component during disengagement when an edge of a thread region of the first component encounters an edge of a thread region of the second component.

19. The method of claim 18, further comprising:

preventing the first component from rotating with respect to the second component during the sliding;

engaging a gap of the first component with a rim of the second component; and

rotating the first component relative to the second component in one direction after the engaging.

20. The method of claim 18, wherein rotating the first component relative to the second component comprises rotating the first component by a number of degrees less than 360°

.

21. The method of claim 20, wherein the number of degrees is one of less than or equal to about 60°

, less than or equal to about 90°

or less than or equal to about 180°

.

22. The method of claim 20, further comprising rotating the first component relative to the second component in the opposite direction by about the same number of degrees to disengage the two components.

23. The method of claim 18, wherein at least one of the first component or the second component is coupled to a consumable of the plasma arc torch.

24. The method of claim 18, further comprising aligning radially the plurality of thread regions of the first component with the plurality of slotted region of the second component.

25. The method of claim 18, further comprising aligning radially the plurality of slotted regions of the first component with the plurality of thread regions of the second component.