Lower electrode holder
JP1820339SActive Publication Date: 2026-03-02SMK CO LTD
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Patent Information
- Application Number
- JP2025024291D
- Authority / Receiving Office
- JP · JP
- Patent Type
- Designs
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-03-02
- Estimated Expiration
- 2050-12-02
Smart Images
Figure 0001820339000001 
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Abstract
The design article is a lower electrode holder incorporated into a welding device that resistance-welds nuts to steel plates. This lower electrode holder positions the nut with a positioning pin that penetrates the lower electrode and protrudes upward. During welding, the upper electrode moves downward to press down on the nut, determining that the nut is set correctly. However, if the nut is set upside down, the amount of downward pressure of the guide pin by the upper electrode changes, and this is determined to be an abnormality.
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