Patent ID: 8079106

Claim:
A brush head for detachably mounting to an electrical toothbrush having a driving shaft to generate a rotational power, comprising: an elongated brush arm adapted for detachably mounting to said driving shaft and arranged when said driving shaft is driven to rotate, said brush arm is rotated correspondingly; a plurality of brushing bristles radially and outwardly extended from said brush arm for generating a rolling motion to substantially brush a user's teeth when said brush arm is driven to rotate, wherein said brush arm is arranged for locating at a position that said brushing bristles are tangentially rolling on the tooth surface to brush the tooth surface and are consequently brush the gumline at a predetermined angle to remove plaque from the areas between the teeth and around the gums, wherein said brush arm has an inserting end portion for said driving shaft slidably inserting thereinto and a bristle end portion that said brushing bristles are radially and outwardly projected from said bristle end portion of said brush arm in a row manner; and a spitting shelter slidably mounted to said brush arm to partially cover said brushing bristles for blocking water spitting at said brushing bristles, wherein when said brushing bristles brush user's teeth, said spitting shelter is arranged to prevent said brushing bristles from directly contacting with an oral cavity of said user so as to prevent oral tissues of said user from being damaged, wherein said spitting shelter comprises a sliding joint slidably mounted at said brush arm and a C-shaped bristle shelter upwardly extended from said sliding joint, wherein when said sliding joint is slid upwardly along said inserting end portion of said brush arm, said bristle shelter covers said brushing bristles which are not brushing on the tooth surface, wherein said sliding joint has a slider through hole having a size slightly larger than a size of said inserting end portion of said brush arm, wherein said inserting end portion of said brush arm is slidably passing through said slider through hole of said sliding joint to slidably mount said spitting shelter to said brush arm, wherein said bristle end portion of said brush arm is adapted for coupling with said driving shaft through said inserting end portion of said brush, such that only said bristle end portion of said brush arm is driven to rotate said brushing bristles.