Q021223
Mechanical gear connection
A gear-connection indication identifies transmission through a gearing relationship.
IEC
IEEE / ANSI · Q021223
ANSI/IEEE Mechanical gear connection form
IEEE-library form of mechanical gear connection: a gear-connection indication identifies transmission through a gearing relationship.
In plain English
What does ANSI/IEEE Mechanical gear connection form mean?
This reference locates mechanical gear connection in Autodesk's IEEE-oriented mechanical controls, coupling family. 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 public library uses Q021223 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
What the drawings help you do
The schematic identifies the relationship while a mechanical drawing supplies ratio and geometry. Avoid treating the gear connection mark as a numerical reduction ratio. 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. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
This particular reference
IEEE-library form of mechanical gear connection: a gear-connection indication identifies transmission through a gearing relationship. The symbol does not give a gear ratio, tooth geometry or mechanical rating.
- Normally open / normally closed
- The contact state in the normal condition defined for the drawing.
- Terminal
- An identified point where a conductor connects.
- Signal
- Electrical information passed between devices, rather than necessarily the main power supply.
Read the source: Autodesk IEEE Symbol Preview: Mechanical Controls, Coupling
IEEE / ANSI · Gear Joint
Autodesk IEEE Symbol Preview: Mechanical Controls, Coupling, block Q021223. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph 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
This reference locates mechanical gear connection in Autodesk's IEEE-oriented mechanical controls, coupling family. 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 public library uses Q021223 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
The schematic identifies the relationship while a mechanical drawing supplies ratio and geometry. Avoid treating the gear connection mark as a numerical reduction ratio. 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. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
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 IEEE Symbol Preview: Mechanical Controls, Coupling
Public IEEE-oriented Mechanical Controls, Coupling table explicitly lists Q021223 as Gear Joint. This supports the vendor convention context, not reproduction of the publisher graphic.
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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