초록 ▼

An oral hygiene instrument according to this invention by means of vibration generating means vibrates by way of a holder member an oral hygiene tool removably attached to the holder member and comprises a cap member having a cap side thread portion which meshes with a holder side thread portion for

An oral hygiene instrument according to this invention by means of vibration generating means vibrates by way of a holder member an oral hygiene tool removably attached to the holder member and comprises a cap member having a cap side thread portion which meshes with a holder side thread portion formed at a first end of the holder member which cap member is removably attached to the first end of the holder member and closes an opening in the first end of the holder member, a seal ring fitted on a portion of the holder member or the cap member at the external end of the part where the two members mesh which seal ring is pressed upon by either the cap member or the holder member and seals the gap between the holder member and the cap member within a range of a predetermined angle of screwing of the cap member with respect to the holder member from a late stage to completion of said screwing, and a holder side contact piece and a cap side contact piece mounted in the holder member and the cap member respectively which approach each other when the cap member is screwed with respect to the holder member and in the range of the predetermined angle make contact and close a circuit supplying electricity to the vibration generating means. In order to removably attach the oral hygiene tool to the holder member, a bottomed cylindrical holding part having a plurality of axially extending first slits and second slits is formed at a second end of the holder member, and the oral hygiene tool is provided with a shaft portion which can be inserted into the holding part.

대표청구항 ▼

[ What is claimed is:] [1.] An oral hygiene instrument comprising:a holder member capable of accommodating a battery and provided with a holder side thread portion at a first end thereof and watertightly closed at a second end thereof;an oral hygiene tool removably attached to said second end of sai

[ What is claimed is:] [1.] An oral hygiene instrument comprising:a holder member capable of accommodating a battery and provided with a holder side thread portion at a first end thereof and watertightly closed at a second end thereof;an oral hygiene tool removably attached to said second end of said holder member and comprising any one of a group consisting of a toothbrush, an interdental cleaning brush, a gum massaging tool and a nipple-type gum massaging tool, mounted on an end of a shaft portion thereof;vibration generating means, housed in said second end of said holder member, for vibrating said oral hygiene tool by way of said holder member;a cap member having a cap side thread portion for meshing with said holder side thread portion, said cap member being removably attached to said first end of said holder member and closing an opening in said first end of said holder member;a seal ring fitted on a portion of any one of said holder member and said cap member at an external end of a part where said holder member meshes with said cap member, said seal ring being pressed upon by any one of said cap member and said holder member and seals a gap between said holder member and said cap member within a range of a predetermined angle of screwing of said cap member with respect to said holder member from a late stage to completion of said screwing; anda holder side contact piece and a cap side contact piece mounted in said holder member and said cap member, respectively, which approach each other when said cap member is screwed with respect to said holder member and in said range of said predetermined angle make contact and close a circuit supplying electricity to said vibration generating means.