U+2699 Gear
U+2699 wurde in Version 4.1 in 2005 zu Unicode hinzugefügt. Er gehört zum Block
Dieses Zeichen ist ein Other Symbol und wird allgemein verwendet, das heißt, in keiner speziellen Schrift. Das Schriftzeichen ist auch bekannt als technology und tools.
Das Zeichen ist keine Zusammensetzung. Es hat keine zugewiesene Weite in ostasiatischen Texten. In bidirektionalem Text handelt es als Other Neutral. Bei einem Richtungswechsel wird es nicht gespiegelt. Das Wort, das U+2699 mit ähnlichen Zeichen bildet, verbietet in sich Zeilenumbrüche.
Das CLDR-Projekt bezeichnet dieses Zeichen mit „Zahnrad“ für die Verwendung in Screenreader-Software. Es weist zusätzliche Namen zu, z.B. für die Suche in Emoji-Auswahlboxen: Werkzeug.
Dieses Schriftzeichen ist als Emoji ausgezeichnet. Es wird als schwarz-weißes Zeichen auf unterstützenden Systemen angezeigt. Um es auf bunte Ansicht umzustellen, kannst du es mit
Die Wikipedia hat die folgende Information zu diesem Codepunkt:
A gear or gearwheel is a rotating machine part typically used to transmit rotational motion and/or torque by means of a series of teeth that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or cavities machined on the part, or separate pegs inserted into it. In the latter case, the gear is usually called a cogwheel. A cog may be one of those pegs or the whole gear. Two or more meshing gears are called a gear train.
The smaller member of a pair of meshing gears is often called pinion. Most commonly, gears and gear trains can be used to trade torque for rotational speed between two axles or other rotating parts and/or to change the axis of rotation and/or to invert the sense of rotation. A gear may also be used to transmit linear force and/or linear motion to a rack, a straight bar with a row of compatible teeth.
Gears are among the most common mechanical parts. They come in a great variety of shapes and materials, and are used for many different functions and applications. Diameters may range from a few μm in micromachines, to a few mm in watches and toys to over 10 metres in some mining equipment. Other types of parts that are somewhat similar in shape and function to gears include the sprocket, which is meant to engage with a link chain instead of another gear, and the timing pulley, meant to engage a timing belt. Most gears are round and have equal teeth, designed to operate as smoothly as possible; but there are several applications for non-circular gears, and the Geneva drive has an extremely uneven operation, by design.
Gears can be seen are instances of the basic lever "machine". When a small gear drives a larger one, the mechanical advantage of this ideal lever causes the torque T to increase but the rotational speed ω to decrease. The opposite effect is obtained when a large gear drives a small one. The changes are proportional to the gear ratio r, the ratio of the tooth counts. namely, T2/T1 = r = N2/N1, and ω2/ω1 = 1/r = N1/N2. Depending on the geometry of the pair, the sense of rotation may also be inverted (from clockwise to anti-clockwise , or vice-versa).
Most vehicles have a transmission or "gearbox" containing a set of gears that can be meshed in multiple configurations. The gearbox lets the operator vary the torque that is applied to the wheels without changing the engine's speed. Gearboxes are used also in many other machines, such as lathes and conveyor belts. In all those cases, terms like "first gear", "high gear", and "reverse gear" refer to the overall torque ratios of different meshing configurations, rather than to specific physical gears. These terms may be applied even when the vehicle does not actually contain gears, as in a continuously variable transmission.
Darstellungen
System | Darstellung |
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Nr. | 9881 |
UTF-8 | E2 9A 99 |
UTF-16 | 26 99 |
UTF-32 | 00 00 26 99 |
URL-kodiert | %E2%9A%99 |
HTML hex reference | ⚙ |
Falsches windows-1252-Mojibake | âš™ |
Alias | technology |
Alias | tools |
Kodierung: GB18030 (Hex-Bytes) | 81 37 B1 35 |
Anderswo
Vollständiger Eintrag
Eigenschaft | Wert |
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4.1 (2005) | |
GEAR | |
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Miscellaneous Symbols and Pictographs | |
Other Symbol | |
Common | |
Other Neutral | |
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none | |
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Ja | |
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neutral | |
Nicht anwendbar | |
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none | |
keine Nummer | |
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