Motor with reduction gear

• Main Author: TAKADA, SADAKI
• Format: Patent
• Language: English; French; German
• Published: 23.07.2008
• Subjects: PERFORMING OPERATIONS; SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; VEHICLES IN GENERAL

A wiper motor (11) which can prevent an impact force from greatly acting on attaching parts is provided. A gear cover (40) formed in a substantially inverted y-plate shape is fastened to an opening of a gear case (21) of the wiper motor (11) used in a rear wiper device so as to cover a worm reduction gear (22) and a crank device. A gravity center of a motor part and a gear part is disposed within an area of a triangle formed by a first attaching part (41), a second attaching part (42), and a third attaching part (43), which are formed at three end portions of the inverted y-plate shape of the gear cover (40). The first attaching part (41) is disposed on an extension line of the rotation axis (12), and the rotation axis (12) is disposed at a position where a segment connecting the second attaching part (42) and the third attaching part (43) is divided into half. A wiper shaft (31) is disposed on an opposite side to the third attaching part (43) with respect to a segment connecting the first attaching part (41) and the second attaching part (42).