| 摘要 |
A robot cleaner having a contact sensing function is provided to support elastic force of a bumper which is made of rubber and to turn on/off first and second contact parts exactly by placing a film part having a plurality of embossed elastic buttons. A film part(130) has a plurality of elastic buttons(131). A second contact part which is electrically contacted with a first contact part(161) is attached along recessed grooves(132) of the elastic buttons. An outer peripheral extremity of the second contact part is electrically connected with third contact parts(167) connected with a wire of a PCB(Printed Circuit Board). A contact projection(165) is formed at the center of the second contact part. The contact projection is pressed toward the PCB, and is electrically contacted with the first contact part to generate a contact signal. An inner bumper(140) is made of rubber, and a plurality of compression projections(145) are projected at the rear surface of the bumper. The compression projections are recessed in a plurality of recessed grooves(143) and pushed by buffer projections(141). The buffer projections are in contact with the rear surface of an outer bumper(150) to absorb shock of the outer bumper colliding with an obstacle and to push the compression projections. |
