PROBLEM TO BE SOLVED: To provide an electric air pump capable of preventing a load from being continuously applied to a transmission mechanism even in a case where a command signal is cut off during driving.SOLUTION: An electric air pump AP includes: a motor 3 configured to rotationally drive a rotational shaft 2 on the basis of a command signal; a pump part 6 having a cylinder 4 and a piston 5 reciprocable in the cylinder 4; and a transmission mechanism 7 configured to transmit rotational force of the rotational shaft 2 to the piston 5. The electric air pump further includes a control circuit part 32 that even if the command signal is cut off when the motor 3 is driven to feed gas, in a case where a position of the piston 5 is within a reciprocative intermediate range and within a compression range A that is a load range where a load is applied to the transmission mechanism 7, continues to drive the motor 3 until the position of the piston 5 reaches out of the compression range A.SELECTED DRAWING: Figure 6
【課題】駆動中に指令信号が遮断されても伝達機構に負荷が掛かり続けてしまうことを防止できる電動エアポンプを提供すること。【解決手段】電動エアポンプAPは、指令信号に基づいて回転軸2を回転駆動するモータ3と、シリンダ4と該シリンダ4内で往復動可能なピストン5とを有するポンプ部6と、回転軸2の回転力をピストン5に伝達するための伝達機構7とを備える。気体を給送すべくモータ3が駆動されている際に指令信号が遮断されても、ピストン5の位置が往復動中間範囲内にあるとともに伝達機構7に負荷が掛かる負荷範囲である圧縮範囲A内にあると、ピストン5の位置が圧縮範囲A外に達するまでモータ3の駆動を継続する制御回路部32を備える。【選択図】図6
ELECTRIC AIR PUMP AND ON-VEHICLE OPTICAL SENSOR WASHING DEVICE
電動エアポンプ及び車載光学センサ洗浄装置
2018-04-05
Patent
Electronic Resource
Japanese
IPC: | F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen |
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