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发明授权
CN106193867B 三滑轮 有权

三滑轮
摘要：
本发明涉及一种三滑轮。包括滚轮、用于安装所述滚轮并线性间隔铰接在一起的两个摆动铰链和一个平衡铰链、以及收容所述摆动铰链和所述平衡铰链的壳体，所述摆动铰链上设置有用于与所述平衡铰链铰接的第一铰接孔、用于安装所述滚轮的第一安装孔、以及位于所述第一铰接孔和所述第一安装孔之间并用于与所述壳体铰接的支撑孔，所述支撑孔中穿设有与所述壳体连接的支点轴；所述平衡铰链两端分别设置有与所述第一铰接孔相对应的第二铰接孔、以及位于两所述第二铰接孔之间的第二安装孔，所述第二安装孔中穿设有用于安装所述滚轮的平衡轴，能确保所有滚轮均与门窗滑轨接触，确保推拉门窗运行顺畅。
摘要（英）：

The invention relates to a tri-pulley. The tri-pulley comprises rollers, two swing hinges and a balance hinge for mounting the rollers and linearly hinged at intervals, and a shell for accommodating the swing hinges and the balance hinge; the swing hinges are provided with first hinge holes for hinging with the balance hinge, first mounting holes for mounting the rollers, and support holes positioned between the first hinge holes and the first mounting holes for hinging with the shell; fulcrum shafts connected with the shell are inserted in the support holes; second hinge holes corresponding to the first hinge holes and second mounting holes positioned between the two second hinge holes are respectively formed in two ends of the balance hinge; and balance shafts for mounting the rollers are inserted in the second mounting holes. The tri-pulley can guarantee contact between the rollers and door/window slide rails, and guarantees smooth operation of a pull-push door/window.

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