Door handle device - Patent 1840845

(19)

(11)

EP 1 840 845 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.01.2010 Bulletin 2010/01

(43)	Date of publication A2:
	03.10.2007 Bulletin 2007/40

(21)	Application number: 06125411.6

(22)	Date of filing: 05.12.2006

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International Patent Classification (IPC):

G07C 9/00^(2006.01)

H01Q 1/32^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

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Priority:

31.03.2006 JP 2006097568
31.03.2006 JP 2006097571

(71)	Applicant: Kabushiki Kaisha Honda Lock
	Miyazaki Miyazaki-shi (JP)

(72)	Inventors:
	Fujiwara, Hiroto KABUSHIKI KAISHA HONDA LOCK Miyazaki-shi Miyazaki (JP) Otsuda, Yuuhou KABUSHIKI KAISHA HONDA LOCK Miyazaki-shi Miyazaki (JP) Kuriyama, Kazuyuki KABUSHIKI KAISHA HONDA LOCK Miyazaki-shi Miyazaki (JP)

(74)	Representative: Dorschner, David et al
	Dennemeyer & Associates S.A. 55, rue des Bruyères 1274 Howald 1274 Howald (LU)

(54)	Door handle device

(57) Provided is a door handle device incorporated with an antenna that can prevent the magnetic flux produced from the electro-conductive members from impairing the performance of the antenna. The door handle device comprises an antenna coil 11 for external communication formed by winding copper wire and a circuit board 10 including a ground pattern 32 and detection electrode patterns 33 and 34 that are received in a door handle 5, and the ground pattern 32 and detection electrode patterns 33 and 34 are each provided with a plurality of slits 32S, 33S and 34S extending in parallel with an axial line A around which the antenna coil 11 is wound. The provision of the slits prevents generation of eddy current in each electro-conductive pattern which otherwise would interfere with the performance of the antenna.

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