ELECTRIC TOOTHBRUSH, SYSTEM, BRUSHING SITE DETECTION METHOD, AND PROGRAM

Title:

ELECTRIC TOOTHBRUSH, SYSTEM, BRUSHING SITE DETECTION METHOD, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2019/012879

Kind Code:

A1

Abstract:

This electric toothbrush comprises, inside a main body (1) having a head part (4), a neck part (3), and a grip part (5) along the vertical axis direction, a gyro sensor (16) for detecting the angular velocity of the main body (1). An angle (θ) formed by the vertical axis of the main body (1) when the bristles of the head part (4) are contacting a tooth row brushing site (BP) and the vertical axis of the main body (1) when the bristles of the head part (4) are contacting a tooth row reference position (BPO) is found on the basis of the output of the gyro sensor (16). A correspondence point (P) corresponding to the brushing site (BP) on an approximation curve (E1) curved in accordance with the tooth row is found on the basis of the angle (θ), and the coordinates of the correspondence point (P) are set as a translation position (P) of the brushing site (BP).

More Like This:

WO/2019/031636	TOOTHPICK HAVING TOOTHBRUSH FUNCTION
JP2018029965	SHAVING SYSTEM
WO/1997/001974	HAIR BRUSH BRISTLE

Inventors:

YOSHIDA HIDEAKI (JP)
NAKANISHI MOTOFUMI (JP)
KOBAYASHI TATSUYA (JP)
TANAKA TAKAHIDE (JP)

Application Number:

PCT/JP2018/021986

Publication Date:

January 17, 2019

Filing Date:

June 08, 2018

Export Citation:

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Assignee:

OMRON HEALTHCARE CO LTD (JP)

International Classes:

A46B15/00; A46B13/02

Foreign References:

JP2016532492A	2016-10-20
JP2017060662A	2017-03-30

Other References:

SAKA, TSUTOMU: "The studies on the factor analysis of the morphologic variation of the palatal vault. In relation to the maxillo-facial-cranial pattern", JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY, vol. 34, 3 March 1988 (1988-03-03), pages 451 - 469, XP055566988