Sunstar Inc.

Sunstar Suisse S.a.

Yukinori Wada

Masahiro Nishiura

Masahiko Hagihara

Naoyuki Yokota

Kazuaki Yoshida

Narito Tsuchida

Ikumi Kojima

Kieko Imai

Teruhiko Inoue

Hiroyuki Miyata

Kazuyoshi Nakamura

A molded article () for an oral care product includes a primary molded part (P) that includes a covering target part (PC), a secondary molded part (Q) that includes a covering part (Q) covering the covering target part (PC), and an exposed structure () that includes one or a plurality of penetration parts (P) penetrating the covering part (Q). The penetration part (P) includes an exposed surface exposed with respect to the covering part (Q). The penetration part (P) is provided in the primary molded part (P) such that a force received by the primary molded part (P) from a resin material corresponding to the secondary molded part (Q) so as to deform the primary molded part (P) in a secondary molding step of molding the secondary molded part (Q) is able to be transferred to a mold through the exposed surface.

Molded article for oral care product and oral care product

A brush head is provided on the front surface at a distal-end-side part of a neck of a replaceable brush. A fitting shaft portion is provided on a planting base of the brush head so as to protrude rearward and penetrate through a support wall portion of the neck. A shaft hole is formed at a rotation center of a brush head body of the brush head so as to extend frontward from a rear surface of the brush head body. The neck has ahead support shaft mounted to the shaft hole so as to rotatably support the brush head. A front end of the head support shaft is located frontward of a rear surface of the planting base, and power from the driving portion is transmitted to a rear part of the fitting shaft portion.

Electric toothbrush

Provided is an oral cleaning device capable of ensuring a sufficient ejection pressure for a cleaning liquid while employing a small and low-cost electric air pump with a low output. An oral cleaning device is provided with an air-tightly closable cleaning liquid tankwhich stores a cleaning liquid, a cleaning liquid supply passagewhich has an ejection portfor ejecting the cleaning liquid into the oral cavity on one end and an introduction portopen inside the bottom part of the cleaning liquid tankon the other end, and an electric air pumpwhich supplies air into the cleaning liquid tankto pressurize the inside of the cleaning liquid tank. The cleaning liquid inside the cleaning liquid tankis supplied to the ejection portthrough the cleaning liquid supply passageby air pressure inside the cleaning liquid tank. An air introduction holewhich is open on the midway part of the cleaning liquid supply passageis provided and part of the air supplied to the cleaning liquid tankfrom the air pumpis supplied to the cleaning liquid supply passagethrough the air introduction holeto eject the cleaning liquid in a pulsatile manner from the ejection port

Oral cleaning device

A vibrational frequency adjustment device comprises, as a vibrational frequency adjustment means (): a first conversion means () which is provided with an input-side rotating member (), an output-side rotating member (), and a one-way clutch () for transmitting only the rotational motion in one direction of the input-side rotating member () to the output-side rotating member () and which, by causing the input-side rotating member () to pivot in a reciprocating manner by a set angle by means of the reciprocating linear motion of an output shaft (), transmits only the forward motion or the reverse motion of the input-side rotating member () to the output-side rotating member () through the one-way clutch () to thereby rotate the output-side rotating member () by a given angle; and a second conversion means () which converts the rotational motion of the output-side rotating member () into the reciprocating linear motion of a second shaft member ().

Vibrational frequency adjustment device and water flow type oral cavity cleaning device using same

Growing community of inventors

Takatsuki, Japan

Yukinori Wada