ELECTRIC PARKING BRAKE DRIVING DEVICE AND ELECTRIC PARKING BRAKE DEVICE

PROBLEM TO BE SOLVED: To provide an electric parking brake driving device and an electric parking brake device, capable of reducing a shock sound at a release operation of a parking brake.SOLUTION: A parking brake actuator generates brake force at a wheel by means of converting rotary motion of a sc...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEO YUICHI, HAYASHI YASUTO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an electric parking brake driving device and an electric parking brake device, capable of reducing a shock sound at a release operation of a parking brake.SOLUTION: A parking brake actuator generates brake force at a wheel by means of converting rotary motion of a screw member 6 rotated by an electric parking brake driving device D, to a linear motion, transmitting the result to a piston, and pressing a brake pad against a disk rotor by means of the piston. The electric parking brake driving device D includes an electric motor 3, and a speed reduction mechanism 4 for transmitting driving force of the electric motor 3 to the parking brake actuator. The speed reduction mechanism 4 includes a gear body 41, and a planetary gear mechanism YG which is provided within the gear body 41 and to which the driving force of the electric motor 3 is input. A cushion rubber 55 compressible in circumferential direction, is interposed between a ring gear 52 of the planetary gear YG and the gear body 41.