Rotary Power Coupling in Handheld Welding Guns for Flexible Positioning
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Solution Overview
Problem
Handheld welding guns with rigid attachments cause user discomfort and difficulty in maintaining stable welding positions, leading to wrist and arm stress, and heat transfer issues during extended use.
Innovation Solution
A welding gun design featuring a rotary power connector and rotatable electrical signal connection that allows the handle and supply tube assembly to rotate relative to the cable assembly, enabling easier movement and reducing heat transfer to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the welding gun is rigidly attached to the cable bundle, then the welding gun maintains structural stability, but the user experiences wrist and arm stress and cannot easily move the handheld welding gun
Solution Approach 1:
The patent introduces a rotary power connector that enables the cable assembly to rotate relative to the supply tube assembly, transforming the rigid static connection into a dynamic flexible connection. This allows the user to move the welding gun freely in multiple directions while maintaining electrical power transmission, thereby improving ease of operation without compromising structural integrity
2Adaptability or versatility
If the welding gun is rigidly attached to the cable bundle, then the welding gun maintains structural stability, but it becomes more difficult to weld the area
Solution Approach 1:
The rotary power connector enables the cable assembly to rotate relative to the supply tube assembly, allowing the welding gun to adapt to various welding positions and angles. This dynamic connection provides the versatility needed to access difficult-to-reach areas while maintaining structural stability through the robust rotary connector design
3Object-affected harmful factors
If the welding gun has a rigid attachment, then the welding gun maintains structural stability, but heat generated in the welding cable is transferred to the user through the handheld portion
Solution Approach 1:
The rotary power connector serves as an intermediary between the cable assembly and the supply tube assembly. By introducing this rotational interface, the patent creates a thermal barrier that reduces direct heat transfer from the cable to the handheld portion, protecting the user from excessive heat while maintaining structural connection
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design reduces user discomfort by allowing for flexible welding positions and extends the duration of welding sessions by minimizing heat transfer to the user's hand.
Implementation Method 1
the rotary power connector is configured to transfer electrical power from the cable assembly to the supply tube assembly
Implementation Method 2
the welding gun further comprises a heat transfer tube assembly fixed to the cable assembly, the heat transfer tube assembly configured to transfer heat from the cable assembly
Data Source
AI summary
The present disclosure provides a welding gun and a power coupling for a welding gun that permit rotational movement of a handle relative to a cable assembly used by the welding gun. In one aspect, a welding gun comprises; a handle; a supply tube assembly fixedly extending from a front of the handle: a cable assembly configured to supply electrical power; a rotary power connector rotatably coupled between the supply tube assembly and the cable assembly, the cable assembly rotatable with respect to the handle via the rotary power connector, wherein the rotary power connector is configured to transfer electrical power from the cable assembly to the supply tube assembly; and an actuator switch assembly electrically coupled to control wires of the cable assembly.