| 摘要 |
A mop is provided to prevent a floorcloth from slipping from a support plate by a lattice unevenness on a bottom side of a second support plate made of soft materials, and to firmly assemble first and second support plates that are made of soft and hard materials by co-injection molding. A mop(1) comprises a support plate(10), a cover(20), blades(30), and a handle. The cover is assembled on an upper center of the support plate that is to be surrounded by a floorcloth. The rod-type handle is rotatably assembled to the upper center of the cover. The blades are respectively hinged to the opposite sides of the cover, wherein the opposite blades, which are elastically opened and closed, are capable of fixing the floorcloth by pressing down the opposite sides of the floorcloth assembled to the support plate by a resilient force of a spring(32). The support plate is injection-molded with first and second plates that are made of hard and soft materials, wherein the first plate made of hard synthetic resin, is drilled with a plurality of holes and a plurality of side protrusions(12) along the lateral periphery, and an edge(13) of the second plate made of soft synthetic resin, surrounds the side protrusions of the first plate. Soft synthetic resin is injected and hardened through the holes in the first plate by co-injection molding to produce a plurality of protrusions(14) made of soft materials on the opposite sides of the first plate protruding through the holes and engaging with a plurality of engaging protrusions(33) contoured on the opposite blades. A lattice unevenness is contoured on a bottom side of the second support plate.
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