Grout cleaning hand tool

A grout cleaning hand tool comprising:

• a grout cleaning head assembly comprising a support member configured to removably receive a brush subassembly, wherein the brush subassembly comprises a brush body, a long narrow bundle of bristles secured to the brush body and configured to resist collapsing when pressed against grout lines in a tiled floor surface, and a brush handle;
• wherein a channel of the support member is configured to slidably receive the brush body, the brush body is configured as a pin of a dovetail joint, and the channel of the support member is configured as a tail of the dovetail joint;
• wherein the brush subassembly is configured to be inserted to the channel of the support member with the handle joined to the brush body beyond the dovetail joint between the channel and the brush body;
• and
• an elongate handle extending upwardly from the grout cleaning head assembly, wherein the elongate handle comprises a handle rod and an auxiliary handle joined to the handle rod, wherein the support member comprises a compression attachment configured to removably receive the handle rod.

A grout cleaning hand tool, comprising:

• a grout cleaning head assembly comprising a support member including a channel extending along an insertion axis, and a brush subassembly configured to be inserted to and removed from the channel in the support member for removable mounting to the support member;
• wherein the support member includes first and second rails defining the channel and the channel is a tapered, substantially trapezoidal slot;
• wherein the brush subassembly comprises a brush body and a brush handle joined to and extending from one end of the brush body, wherein the brush subassembly is configured to be inserted to the channel of the support member with the handle joined to the brush body beyond the channel of the support member;
• and a long narrow bundle of bristles secured to the brush body and configured to resist collapsing when pressed against grout lines in a tiled floor surface;
• and
• an elongate handle joined to the support member, extending upwardly from the grout cleaning head assembly at an angle between 40° and 60° from the insertion axis, wherein the brush subassembly is configured, when removed from the grout cleaning head assembly, for cleaning the grout lines in the tiled floor surface by an operator holding the brush handle substantially parallel to horizontal.