A shift device for wheel head of sander

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(11)

EP 1 093 884 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.10.2002 Bulletin 2002/42

(43)	Date of publication A2:
	25.04.2001 Bulletin 2001/17

(21)	Application number: 99123775.1

(22)	Date of filing: 30.11.1999

(51)	International Patent Classification (IPC)⁷: B24B 23/04, B24B 45/00, B24B 23/02, B23B 31/40

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

20.10.1999 CN 99239991

(71)	Applicant: Suzhou Taihu Industrial Co. Ltd.
	Wuxian City, Jiangsu Province, 215128 (CN)

(72)	Inventor:
	Yang, Zhibin Wuxian-city, Jiangsu Province, 215128 (CN)

(74)	Representative: Kirschner, Klaus Dieter, Dipl.-Phys.
	Schneiders & Behrendt Rechtsanwälte - Patentanwälte Sollner Strasse 38 81479 München 81479 München (DE)

(54)	A shift device for wheel head of sander

(57) A shift device for a wheel head of a sander comprises an output shaft 1 inserted in a connecting hole (3) of the output shaft (1), a spring (6) and a latch axis (7) inserted in the hole (4) of the output shaft (1), two the fix latches (8) disposed in a slot (5) at the end of the output shaft (1), which stretch towards two sides at the slot (5). When the wheel head is to be shifted, the latch axis (7) is lifted under the acting of a restricting sleeve (12), the fix latch (8) rotates downward and retrieved from a concave slot (9), and the wheel head (2) is fetched out. The present invention is capable of shifting the wheel head quickly and efficiently.

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