(19)
(11) EP 2 404 702 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.12.2013 Bulletin 2013/51

(43) Date of publication A2:
11.01.2012 Bulletin 2012/02

(21) Application number: 11169235.6

(22) Date of filing: 09.06.2011
(51) International Patent Classification (IPC): 
B24B 23/04(2006.01)
 B24B 41/04(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 07.07.2010 JP 2010154911
16.12.2010 JP 2010280697
16.12.2010 JP 2010280698

(71) Applicant: Makita Corporation
Anjo Aichi 446-8502 (JP)

(72) Inventors:
  • Sugita, Fumihide
    Anjo, Aichi 446-8502, (JP)
  • Hagiwara, Hirokazu
    Anjo, Aichi 446-8502, (JP)
  • Aoki, Yonosuke
    Anjo, Aichi 446-8502, (JP)
  • Sunazuka, Ryo
    Anjo, Aichi 446-8502, (JP)
  • Nakane, Yasumasa
    Anjo, Aichi 446-8502, (JP)
  • Fujimatsu, Naoki
    Anjo, Aichi 446-8502, (JP)

(74) Representative: Kramer - Barske - Schmidtchen 
Landsberger Strasse 300
80687 München
80687 München (DE)

   


(54) Orbital sander


(57) In an orbital sander, a main body (2) including a motor (3) is provided with a spindle (7) that is rotatable by driving the motor (3) and an eccentric shaft (7A) that is positioned eccentrically with respect to the center of rotation of the spindle (7) and that performs circular orbital motion along with rotation of the spindle (7), and a portion of the eccentric shaft (7A) that projects downward from the main body (2) is provided with a base (5) coupled via two bearings that are upper and lower bearings (18), (15) and a balancer (29) projecting to a side opposite the side of eccentricity of the eccentric shaft (7A). A center of gravity P of the base (5) is positioned between the two upper and lower bearings (18), (15).







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