我们研制了一种液压管路中使用的直角接头(图1),它可以在圆周上的任意方向定位。定位螺母3预先拧在接头体2上,并用专用工具将垫圈5装在接头体2的螺纹退刀槽中。垫圈5的内径比退刀槽的外径稍大,但是比螺纹的外径小。它可以在退刀槽中活动,但不能由螺纹上脱出。 We developed a right angle joint for use in hydraulic lines (Figure 1) that can be positioned in any direction on the circumference. Locating nut 3 is screwed onto connector body 2 in advance and the washer 5 is fitted into the thread undercut of connector body 2 using a special tool. The inner diameter of the washer 5 is slightly larger than the outer diameter of the undercut but smaller than the outer diameter of the thread. It can move in the undercut, but can not be screwed off.