Coil
Relay coil
The operating element associated with a relay and its separately drawn contacts.
Schematic
IEC · Q021223
Mechanical gear connection
A gear-connection indication identifies transmission through a gearing relationship.
IEC · Mechanical gear connection
Autodesk IEC-60617 Symbol Preview — Mechanical coupling qualifiers; vendor family reference, not certified IEC geometry or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · Q021223
What it represents
A gear-connection indication identifies transmission through a gearing relationship. A gear relationship transfers motion through the documented gearing arrangement. It can relate an operating member to a switch, position device or driven mechanism.
The schematic identifies the relationship while a mechanical drawing supplies ratio and geometry. Avoid treating the gear connection mark as a numerical reduction ratio.
How to read it
- State the driving/driven mechanism and any required ratio in the schedule.
- The symbol does not give a gear ratio, tooth geometry or mechanical rating.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- State the driving/driven mechanism and any required ratio in the schedule.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
The symbol does not give a gear ratio, tooth geometry or mechanical rating.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Mechanical coupling qualifiers
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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