| 摘要 |
The present invention relates to a toothbrush apparatus having multiple rotatable brushing systems, including a body onto which a head (1) is attached, wherein said head is provided with adjacent counter-rotating brushes (2, 2′) having an overall cylindrical outer shape and longitudinal axes that parallel to one another, each brush (2, 2′) being rotated by a shaft (4, 4′) and supported at each of the ends thereof by a bearing (3, 3′, 5, 5′) forming part of a holder (6) which defines the distance between the longitudinal axes of said brushes, said holder (6) including at least two flexible arms (6a, 6b, 6c, 6d) oriented substantially perpendicular to said longitudinal axes, such that the respective ends thereof form said bearings, said flexible arms being connected to a base (6e) capable of ensuring the attachment of said holder (6) onto the head (1). According to the invention, the apparatus further includes a flexible element (9, 9′) partially surrounding at least one of said brushes (2), which is integrally produced with said holder (6). |
| 主权项 |
1. Toothbrush apparatus having multiple rotatable brushing systems, comprising a body whereon is attached a head (1) provided with adjacent counter-rotating brushes (2, 2′), of overall cylindrical outer shape, with longitudinal axes parallel to one another, with each brush (2, 2′) being driven in rotation by a shaft (4, 4′) and supported at each of its ends by a bearing (3, 3′, 5, 5′) forming part of a holder (6) which determines the distance between the longitudinal axes of said brushes, said holder (6) comprising at least two flexible arms (6a, 6b, 6c, 6d) oriented substantially perpendicular to said longitudinal axes, in such a way that their respective ends constitute said bearings, said flexible arms being connected to a base (6e) able to provide for the fastening of said holder (6) onto the head (1) wherein said holder further comprises a flexible element (9, 9′) partially surrounding at least one of said brushes (2), wherein said flexible element is made from a thermoplastic elastomere material that has a hardness between 20 and 35 shore D, wherein said flexible element is integrally formed with said holder (6) and partially surrounds each of said brushes (2, 2′), wherein said flexible element (9, 9′) has a semi-cylindrical shape arranged at a constant distance of the cylindrical outer surface of at least one of said brushes, wherein said flexible element (9, 9′) covers between one-third and one-half of the outer surface of at least one of said brushes, wherein said flexible element (9, 9′) has an elasticity module between 10 and 30 MPa, wherein said flexible element (9, 9′) is made from polyether block amide, and wherein said flexible element (9, 9′) has an average thickness of a magnitude of a few μm (micrometers). |
