Scrubber head for floor cleaner

Abstract

A mobile floor scrubber includes an orbital scrub head attached to a forward portion of its chassis. The scrubber head includes a rotary motor, an eccentric drive assembly and a floor engaging scrubbing pad which engages and cleans the floor. The eccentric drive mechanism introduces vibration in the orbital scrub head which is transferred to the chassis which reduces the energy used to perform the scrubbing task and reduces the operating efficiency of the floor scrubber. The floor scrubber further includes a cleaning fluid delivery system for providing a cleaning fluid to the scrubbing pad for application to the floor during the cleaning operation. The scrub head includes a first upper plate and a second lower plate arranged in vertically spaced relation, with both plates being generally planar and rectangular in shape. Disposed between and coupled to the upper and lower plates are plural spaced vibration isolators to reduce the transmission of vibration from the lower plate produced by action of the eccentric drive assembly to the upper plate and to isolate the floor scrubber's chassis from this vibration. Any vibration produced in the scrub head is further prevented from transmission into the scrubber's chassis by mounting the scrub head in closely spaced relation relative to the motor's rotary axis.

What is claimed is: 
     
         1 . For use in a mobile floor scrubber, a scrub head comprising:
 a rotary motor coupled to an eccentric drive assembly for providing high speed orbital motion;   a fixed mounting plate having plural connectors for coupling to the mobile floor scrubber and an aperture adapted to receive and provide support for said rotary motor and eccentric drive assembly combination;   a lower oscillating plate coupled to said upper mounting plate and having a floor scrubbing pad attached to a lower portion thereof for engaging and cleaning a floor, wherein said lower oscillating plate is further coupled to said motor and said eccentric drive assembly for undergoing orbital motion in displacing said floor scrubbing pad, and wherein said lower oscillating plate is subject to vibration during operation when displaced by said motor and eccentric drive assembly; and   plural vibration isolators disposed between and coupled to said upper mounting plate and said lower oscillating plate for reducing the vibration transmitted from said lower oscillation plate to said upper mounting plate and to the floor scrubber.