| 摘要 |
A window roller is provided to prevent a window from being forcibly lifted by causing an antitheft protrusion of an antitheft block to bite a rail, when the window is opened by force. A window roller(100) comprises an antitheft block(200). The antitheft block is fixed to a housing of the roller, and the bottom of the antitheft block contacts rails(21) of a window frame(20). The antitheft block is provided with an antitheft protrusion(240) formed at the bottom of the antitheft block. The antitheft protrusion protrudes toward the rail. The antitheft block wedges the antitheft protrusion into the rail, when a locked window(10) is forcedly opened. |
